RTL8019AS

·ç¬R¥b¾ÉÅéªÑ¥÷¦³--¤½¥q SPECIFICATION RTL8019AS RTL8019AS Realtek Full-Duplex Ethernet Controller with Plug and Play Function (RealPNP) SPECIFICATION REALTEK SEMI-CONDUCTOR CO., LTD. HEAD OFFICE NO. 2, INDUSTRY E. RD. IX, SCIENCE-BASED INDUSTRIAL PARK, HSINCHU 30077, TAIWAN, R.O.C. TEL:886-3-5780211 FAX:886-3-5776598 OFFICE 3F, NO. 56, WU-KUNG 6 RD., TAIPEI HSIEN, TAIWAN, R.O.C. TEL: 886-2-22980098 FAX: 886-2-22980094, 22980097 8019AS.doc 2001-05-10 1 ·ç¬R¥b¾ÉÅéªÑ¥÷¦³--¤½¥q SPECIFICATION RTL8019AS CONTENTS 1. FEATURES 2. GENERAL DESCRIPTION 3. PIN CONFIGURATION 4. PIN DESCRIPTION 4.1. Power Pins 4.2. ISA Bus Interface Pins 4.3. Memory Interface Pins (including BROM, EEPROM) 4.4. Medium Interface Pins 4.5. LED Output Pins 5. REGISTER DESCRIPTIONS 5.1. Group 1: NE2000 Registers 5.1.1. Register Table 5.1.2. Register Functions 5.1.2.1. NE2000 Compatible Registers 5.1.2.2. RTL8019AS Defined Registers 5.2. Group 2: Plug and Play (PnP) Registers 5.2.1. Card Control Registers 5.2.2. Logical Device Control Registers 5.2.3. Logical Device Configuration Registers 6. FUNCTIONAL DESCRIPTIONS 6.1. RTL8019AS Configuration Modes 6.2. Plug and Play 6.2.1. Initiation Key 6.2.2. Isolation Protocol 6.2.3. Plug and Play Isolation Sequence 6.2.4. Reading Resource Data 6.2.5. PnP auto detect mode 6.3. 9346 Contents 6.4. Boot ROM 6.5. LED Behaviors 6.6. Loopback Diagnostic Operation 6.6.1. Loopback Operation 6.6.2. To implement Loopback Test 7. Electrical Specification and Timings 7.1. Absolute Maximum Ratings 7.2. D.C. Characteristics 7.3. A.C. Timing Characteristics 3 4 5 6 6 7 8 8 9 9 11 11 16 23 24 25 25 27 29 29 30 34 35 36 37 38 40 42 42 43 46 46 46 8019AS.doc 2001-05-10 2 ·ç¬R¥b¾ÉÅéªÑ¥÷¦³--¤½¥q SPECIFICATION RTL8019AS 1. FEATURES m 100-pin PQFP m RTL8019 software compatible m Supports PnP auto detect mode (RTL8019AS only) m Compliant to Ethernet II and IEEE802.3 10Base5, 10Base2, 10BaseT m Software compatible with NE2000 on both 8 and 16-bit slots m Supports both jumper and jumperless modes m Supports Microsoft‘s Plug and Play configuration for jumperless mode m Supports Full-Duplex Ethernet function to double channel bandwidth m Supports three level power down modes: - Sleep - Power down with internal clock running - Power down with internal clock halted m Built-in data prefetch function to improve performance m Supports UTP, AUI & BNC auto-detect (RTL8019AS only) m Supports auto polarity correction for 10BaseT m Support 8 IRQ lines m Supports 16 I/O base address options and extra I/O address fully decode mode (RTL8019AS only) m Supports 16K, 32K, 64K and 16K-page mode access to BROM (up to 256 pages with 16K bytes/page) m Supports BROM disable command to release memory after remote boot m Supports flash memory read/write (RTL8019AS only) m 16k byte SRAM built in (RTL8019AS only) m Use 9346 (64*16-bit EEPROM) to store resource configurations and ID parameters m Capable of programming blank 9346 on board for manufacturing convenience m Support 4 diagnostic LED pins with programmable outputs 8019AS.doc 2001-05-10 3 ·ç¬R¥b¾ÉÅéªÑ¥÷¦³--¤½¥q SPECIFICATION RTL8019AS 2. General Description The RTL8019AS is a highly integrated Ethernet Controller which offers a simple solution to implement a Plug and Play NE2000 compatible adapter with full-duplex and power down features. With the three level power down control features, the RTL8019AS is made to be an ideal choice of the network device for a GREEN PC system. The full-duplex function enables simultaneously transmission and reception on the twisted-pair link to a full-duplex Ethernet switching hub. This feature not only increases the channel bandwidth from 10 to 20 Mbps but also avoids the performance degrading problem due to the channel contention characteristics of the Ethernet CSMA/CD protocol. The Microsoft's Plug and Play function can relieve the users from pains of taking care the adapter's resource configurations such as IRQ, I/O, and memory address, etc. However, for special applications not to be used as a Plug and Play compatible device, the RTL8019AS also supports the jumper and proprietary jumperless options. To offer a fully plug and play solution, the RTL8019AS provides the auto-detect capability between the integrated 10BaseT transceiver, BNC and AUI interface. Besides, the 10BaseT transceiver can automatically correct the polarity error on its receiving pair. Furthermore, 8 IRQ lines and 16 I/O base address options are provided for grand resource configuration flexibility. The RTL8019AS supports 16k, 32k & 64k byte BROM and fiash memory interface. It also offers the page mode function which can support up to 4M-byte BROM within only 16k-byte system memory space. Besides, the BROM disable command is provided to release the BROM memory space for other system usage (e.g. EMM386, etc.) after the BROM program is loaded. The RTL8019AS is built in with 16K-byte SRAM in a single chip. It is designed not only to provide more friendly functions but also to save the effort of SRAM sourcing and inventory. 8019AS.doc 2001-05-10 4 ·ç¬R¥b¾ÉÅéªÑ¥÷¦³--¤½¥q SPECIFICATION RTL8019AS 3. PIN CONFIGURATION 66 67 68 69 70 71 72 73 74 75 76 77 78 79 80 BA21 [PNP] BA20 [BS0] BA19 [BS1] BA18 [BS2] VDD BA17 [BS3] BA16 [BS4] BA15 BA14 [PL0] BCSB EECS BD7 [PL1][EEDO] BD6 [IRQS0][EEDI] BD5 [IRQS1][EESK] BD4 [IRQS2] 65 64 63 62 61 60 59 58 57 56 55 54 53 52 51 JP AUI LED2 [LED_TX] LED1 [LED_RX] [LED_CRS] LED0 [LED_COL] [LED_LINK] LEDBNC TPIN+ TPINVDD RX+ RXCD+ CDGND X2 81 82 83 84 85 86 87 88 89 90 91 92 93 94 95 96 97 98 99 100 BD3 [IOS0] BD2 [IOS1] GND BD1 [IOS2] BD0 [IOS3] GND SD15 SD14 VDD SD13 SD12 SD11 SD10 SD9 SD8 IOCS16B [SLOT16] INT7 [IRQ15] INT6 [IRQ12] INT5 [IRQ11] INT4 [IRQ10] RTL8019AS 50 49 48 47 46 45 44 43 42 41 40 39 38 37 36 35 34 33 32 31 X1 TX+ TXVDD TPOUTTPOUT+ GND SD7 SD6 SD5 SD4 SD3 SD2 SD1 SD0 IOCHRDY AEN RSTDRV SMEMWB SMEMRB 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 INT3 [IRQ5] INT2 [IRQ4] INT1 [IRQ3] INT0 [IRQ2/9] SA0 VDD SA1 SA2 SA3 SA4 SA5 SA6 SA7 GND SA8 30 29 28 27 26 25 24 23 22 21 20 19 18 17 16 IOWB IORB GND SA19 SA18 SA17 SA16 SA15 SA14 SA13 SA12 SA11 SA10 VDD SA9 8019AS.doc 2001-05-10 5 ·ç¬R¥b¾ÉÅéªÑ¥÷¦³--¤½¥q SPECIFICATION RTL8019AS 4. PIN DESCRIPTIONS 4.1. Power Pins No. 6, 17, 47, 57, 70, 89 14, 28, 44, 52, 83, 86 Name VDD GND Type P P +5V DC power Ground Description 4.2. ISA Bus Interface Pins No. 34 97-100, 1-4 Name AEN INT7-0 Type I O Descriptions Address Enable. This ISA signal must be low for a valid I/O command. Interrupt request lines which are mapped to IRQ15, IRQ12, IRQ11, IRQ10, IRQ5, IRQ4, IRQ3, IRQ2/9 respectively. Only one line is selected to reflect the interrupt requests at one time. All other lines are tri-stated. The RTL8019AS also uses these pins as inputs to monitor the actual state of the corresponding interrupt lines on ISA bus. The result is recorded in the INTR register, which may be used by software to detect interrupt conflict. This ISA signal is driven low to insert wait cycles to current host read/write command. Upon power-on reset, this pin acts as an input named SLOT16 to detect whether a 16-bit or 8-bit slot is in use. To do this, it is connected to a pull-down resistor (about 27KW) externally. At the falling edge of RSTDRV, the RTL8019AS senses this pin's state. If it is sensed high, the adapter is thought to be placed on a 16-bit slot where this pin is connected to the host's IOCS16B pin, which is typically pulled up by a 300W resistor on the mother board. If it is sensed low, the adapter is thought to be placed on an 8-bit slot where this pin is merely pulled low by the 27KW resistor. After having latched the input state, this pin is switched as the IOCS16B signal which is an open-drain output and is driven low during a 16-bit host data transfer. It is decoded from AEN and SA9-0. Host I/O read command. Host I/O write command. High active hardware reset signal from the ISA bus. Pulses with high level less than 800ns are ignored. Host address bus. SA10 is added to implement the fully decode of PnP ports, address 279h and A79h. In RTL8019, SA10 is not decoded. In RTL8019AS, SA10 should be 0 for a valid access to PnP ports. Host data bus. 35 96 IOCHRDY IOCS16B [SLOT16] O O 29 30 33 27-18, 1615, 13-7, 5 IORB IOWB RSTDRV SA19-0 I I I I 87-88, 9095, 43-36 SD15-0 I/O 8019AS.doc 2001-05-10 6 ·ç¬R¥b¾ÉÅéªÑ¥÷¦³--¤½¥q SPECIFICATION RTL8019AS I I Host memory read command. Host memory write command. This pin is added to decode the write command of a flash memory. 31 32 SMEMRB SMEMWB 4.3. Memory Interface Pins (including BROM, EEPROM) No. 75 Name BCSB Type O Description BROM chip select. Active low signal, asserted when BROM is read. RTL8019AS drives this pin low when SA19-14 matches the selected BROM memory base address and either of the 2 conditions below meets: (1) SMEMRB is low (2) SMEMWB is low and RTL8019AS's flash memory write function is enabled. 76 66-69, 71-74 77-82, 84-85 [79] [78] [77] EECS BA21-14 BD7-0 [EESK] [EEDI] [EEDO] O O I/O O O I 9346 chip select. Active high signal, asserted when 9346 is read/write. BROM address. BROM data bus. 9346 serial data clock 9346 serial data input 9346 serial data output The following pins are defined for jumper options. Their states are latched at the falling edge of RSTDRV, then they are changed to serve as the SRAM bus. Each of them is internally pulled down by a 100KW resistor. Therefore, the input will be low when left open and high when pulled up by a 10K resistor externally. [66] [PNP] I When it is high in jumperless mode (i.e. JP=low), the RTL8019AS is forced into Plug and Play mode regardless of the contents of 9346. The following pins are don't care in jumperless mode (JP=low). [72-71, 69-67] [85-84, 82-81] [77, 74] [80-78] 65 [BS4-0] [IOS3-0] [PL1-0] [IRQS2-0] JP I I I I I Select BROM size and base address. Select I/O base address. Select network medium type. Select one interrupt line among INT7-0. When high, this pin selects jumper mode. When low, it selects jumperless modes (including RT jumperless and Plug and Play). After RTL8019AS latches all jumper status upon power on reset, these pins always* reflect the value of BPAGE register directly in BROM page mode. In normal mode, BA16-21 are not used and BA14-15 act as: BROM Size 16K 32K 64K 7 BA14 high SA14 SA14 BA15 high high SA15 8019AS.doc 2001-05-10 ·ç¬R¥b¾ÉÅéªÑ¥÷¦³--¤½¥q SPECIFICATION RTL8019AS *Note: RTL8019AS doesn't drive BA14-21 until the SMEMRB goes from high to low. 4.4. Medium Interface Pins No. 64 Name AUI Type I Description This input is used to detect the usage of an external MAU on the AUI interface. The input should be driven low for embedded BNC and high for external MAU. When the input is high, RTL8019AS sets the AUI bit (bit5) in CONFIG0 and drives LEDBNC low to disable the BNC. If this pin is not used, it should be connected to GND such that RTL8019AS acts like RTL8019. Please refer to section 5.1.2.2. CONFIG0 for more details. This AUI collision input pair carries the differential collision input signal from the MAU. This AUI receive input pair carries the differential receive input signal from the MAU. This AUI transmit output pair contains differential line drivers which send Manchester encoded data to the MAU. These outputs are source followers and require 270 ohm pull-down resistors to GND. This TP input pair receives the 10 Mbits/s differential Manchester encoded data from the twisted-pair wire. This pair carries the differential TP transmit output. The output Manchester encoded signals have been pre-distorted to prevent overcharge on the twisted-pair media and thus reduce jitter. 20Mhz crystal or external oscillator input. Crystal feedback output. This output is used in crystal connection only. It must be left open when X1 is driven with an external oscillator. 54,53 56,55 49,48 CD+,CDRX+,RXTX+,TX- I I O 59,58 TPIN+, TPIN- I 45,46 TPOUT+, TPOUT- O 50 51 X1 X2 I O 4.5. LED Output Pins No. 60 Name LEDBNC Type O Description This pin goes high when RTL8019AS's medium type is set to 10Base2 mode or auto-detect mode with link test failure. Otherwise, this pin is low. This pin can be used to control the power of the DC convertor for CX MAU and connected to an LED to indicate the used medium type. When LEDS0 bit (in CONFIG3 register of RTL8019AS Page3) is 0, this pin acts as LED_COL. When LEDS0=1, it acts as LED_LINK. 61 LED0 O 8019AS.doc 2001-05-10 8 ·ç¬R¥b¾ÉÅéªÑ¥÷¦³--¤½¥q SPECIFICATION RTL8019AS O When LEDS1 bit (in CONFIG3 register of RTL8019AS Page3) is 0, these 2 pins act as LED_RX & LED_TX respectively. When LEDS1=1, these pins act as LED_CRS & MCSB. Please refer to section 6.5 for details of the lightening behavior of all LEDs. 62,63 LED1,LED2 5. Register Descriptions The registers in RTL8019AS can be roughly divided into two groups by their address and functions -- one for NE2000, the other for Plug and Play (PnP). 5.1. Group 1: NE2000 Registers This group includes 4 pages of registers which are selected by bit PS0 & PS1 in the CR register. Each page contains 16 registers. Besides those registers compatible with NE2000, the RTL8019AS defines some registers for software configuration and feature enhancement. 5.1.1. Register Table No (Hex) [R] 00 01 02 03 04 05 06 07 08 09 0A 0B 0C 0D 0E 0F 10-17 18-1F CR CLDA0 CLDA1 BNRY TSR NCR FIFO ISR CRDA0 CRDA1 Page0 [W] CR PSTART PSTOP BNRY TPSR TBCR0 TBCR1 ISR RSAR0 RSAR1 RBCR0 RBCR1 RCR TCR Page1 [R/W] CR PAR0 PAR1 PAR2 PAR3 PAR4 PAR5 CURR MAR0 MAR1 MAR2 MAR3 MAR4 MAR5 MAR6 MAR7 Page2 [R] CR PSTART PSTOP CR Page3 [R] CR [W] 9346CR BPAGE CONFIG1 CONFIG2 CONFIG3 TEST HLTCLK FMWP - TPSR 8019ID0 8019ID1 RSR CNTR0 RCR TCR DCR IMR CNTR1 DCR CNTR2 IMR Remote DMA Port Reset Port 9346CR BPAGE CONFIG0 CONFIG1 CONFIG2 CONFIG3 CSNSAV INTR CONFIG4 - Notes: "-" denotes reserved. Registers with names typed in bold italic format are RTL8019AS defined registers and are not supported in a standard NE2000 adapter. 8019AS.doc 2001-05-10 9 ·ç¬R¥b¾ÉÅéªÑ¥÷¦³--¤½¥q SPECIFICATION RTL8019AS Page 0 (PS1=0, PS0=0) No. 00H 01H 02H 03H 04H 05H 06H 07H 08H 09H 0AH 0BH 0CH 0DH 0EH 0FH Name CR CLDA0 PSTART CLDA1 PSTOP BNRY TSR TPSR NCR TBCR0 FIFO TBCR1 ISR CRDA0 RSAR0 CRDA1 RSAR1 8019ID0 RBCR0 8019ID1 RBCR1 RSR RCR CNTR0 TCR CNTR1 DCR CNTR2 IMR Type R/W R W R W R/W R W R W R W R/W R W R W R W R W R W R W R W R W Bit 7 PS1 A7 A15 A15 A15 A15 OWC A15 0 TBC7 D7 TBC15 RST A7 A7 A15 A15 0 RBC7 0 RBC15 DFR CNT7 CNT7 CNT7 - Bit 6 PS0 A6 A14 A14 A14 A14 CDH A14 0 TBC6 D6 TBC14 RDC A6 A6 A14 A14 1 RBC6 1 RBC14 DIS CNT6 CNT6 FT1 CNT6 RDCE Bit 5 RD2 A5 A13 A13 A13 A13 0 A13 0 TBC5 D5 TBC13 CNT A5 A5 A13 A13 0 RBC5 1 RBC13 PHY MON CNT5 CNT5 FT0 CNT5 CNTE Bit 4 RD1 A4 A12 A12 A12 A12 CRS A12 0 TBC4 D4 TBC12 OVW A4 A4 A12 A12 1 RBC4 1 RBC12 MPA PRO CNT4 OFST CNT4 ARM CNT4 OVWE Bit 3 RD0 A3 A11 A11 A11 A11 ABT A11 NC3 TBC3 D3 TBC11 TXE A3 A3 A11 A11 0 RBC3 0 RBC11 0 AM CNT3 ATD CNT3 LS CNT3 TXEE Bit 2 TXP A2 A10 A10 A10 A10 COL A10 NC2 TBC2 D2 TBC10 RXE A2 A2 A10 A10 0 RBC2 0 RBC10 FAE AB CNT2 LB1 CNT2 LAS CNT2 RXEE Bit 1 STA A1 A9 A9 A9 A9 A9 NC1 TBC1 D1 TBC9 PTX A1 A1 A9 A9 0 RBC1 0 RBC9 CRC AR CNT1 LB0 CNT1 BOS CNT1 PTXE Bit 0 STP A0 A8 A8 A8 A8 PTX A8 NC0 TBC0 D0 TBC8 PRX A0 A0 A8 A8 0 RBC0 0 RBC8 PRX SEP CNT0 CRC CNT0 WTS CNT0 PRXE Page 1 (PS1=0, PS0=1) No. 00H 01H 02H 03H 04H 05H 06H 07H 08H 09H 0AH 0BH 0CH 0DH 0EH 0FH Name CR PAR0 PAR1 PAR2 PAR3 PAR4 PAR5 CURR MAR0 MAR1 MAR2 MAR3 MAR4 MAR5 MAR6 MAR7 Type R/W R/W R/W R/W R/W R/W R/W R/W R/W R/W R/W R/W R/W R/W R/W R/W Bit 7 PS1 DA7 DA15 DA23 DA31 DA39 DA47 A15 FB7 FB15 FB23 FB31 FB39 FB47 FB55 FB63 Bit 6 PS0 DA6 DA14 DA22 DA30 DA38 DA46 A14 FB6 FB14 FB22 FB30 FB38 FB46 FB54 FB62 Bit 5 RD2 DA5 DA13 DA21 DA29 DA37 DA45 A13 FB5 FB13 FB21 FB29 FB37 FB45 FB53 FB61 Bit 4 RD1 DA4 DA12 DA20 DA28 DA36 DA44 A12 FB4 FB12 FB20 FB28 FB36 FB44 FB52 FB60 Bit 3 RD0 DA3 DA11 DA19 DA27 DA35 DA43 A11 FB3 FB11 FB19 FB27 FB35 FB43 FB51 FB59 Bit 2 TXP DA2 DA10 DA18 DA26 DA34 DA42 A10 FB2 FB10 FB18 FB26 FB34 FB42 FB50 FB58 Bit 1 STA DA1 DA9 DA17 DA25 DA33 DA41 A9 FB1 FB9 FB17 FB25 FB33 FB41 FB49 FB57 Bit 0 STP DA0 DA8 DA16 DA24 DA32 DA40 A8 FB0 FB8 FB16 FB24 FB32 FB40 FB48 FB56 8019AS.doc 2001-05-10 10 ·ç¬R¥b¾ÉÅéªÑ¥÷¦³--¤½¥q SPECIFICATION RTL8019AS Page 2(PS1=1, PS0=0) No. 00H 01H 02H 03H 04H 05H | 0BH 0CH 0DH 0EH 0FH Name CR PSTART PSTOP TPSR Type R/W R R R Bit 7 PS1 A15 A15 A15 Bit 6 PS0 A14 A14 A14 Bit 5 RD2 A13 A13 A13 Bit 4 RD1 A12 A12 A12 Bit 3 RD0 A11 A11 A11 Bit 2 TXP A10 A10 A10 Bit 1 STA A9 A9 A9 Bit 0 STP A8 A8 A8 RCR TCR DCR IMR R R R R - FT1 RDCE MON FT0 CNTE PRO OFST ARM OVWE AM ATD LS TXEE AB LB1 LAS RXEE AR LB0 BOS PTXE SEP CRC WTS PRXE Page 3(PS1=1, PS0=1) No. 00H 01H 02H 03H 04H 05H 06H 07H 08H 09H 0AH 0BH 0CH 0DH 0EH | 0FH Name CR 9346CR BPAGE CONFIG0 CONFIG1 CONFIG2 CONFIG3 TEST CSNSAV HLTCLK INTR FMWP CONFIG4 Type R/W R W R/W R R W* R W* R W* R/W R W R W* R Bit 7 Bit 6 Bit 5 PS1 PS0 RD2 EEM1 EEM0 EEM1 EEM0 BP7 BP6 BP5 VerID1 VerID0 AUI IRQEN IRQS2 IRQS1 IRQEN PL1 PL0 BSELB PL1 PL0 BSELB PNP FUDUP LEDS1 Reserved, Do not write CSN7 CSN6 CSN5 HLT7 HLT6 HLT5 Reserved INT7 INT6 INT5 Flash Memory Write Protect Reserved Bit 4 RD1 BP4 PNPJP IRQS0 BS4 LEDS0 CSN4 HLT4 INT4 Bit 3 RD0 EECS EECS BP3 JP IOS3 BS3 CSN3 HLT3 INT3 Bit 2 TXP EESK EESK BP2 BNC IOS2 BS2 SLEEP SLEEP CSN2 HLT2 INT2 Bit 1 STA EEDI EEDI BP1 0 IOS1 BS1 PWRDN PWRDN CSN1 HLT1 INT1 Bit 0 STP EEDO BP0 0 IOS0 BS0 ACTIVEB CNS0 HLT0 INT0 IOMS Note: The registers marked with type='W*' can be written only if bits EEM1=EEM0=1. 5.1.2. Register Functions 5.1.2.1. NE2000 Compatible Registers CR: Command Register (00H; Type=R/W) This register is used to select register pages, enable or disable remote DMA operation and issue commands. 8019AS.doc 2001-05-10 11 ·ç¬R¥b¾ÉÅéªÑ¥÷¦³--¤½¥q SPECIFICATION RTL8019AS Bit 7, 6 Symbol PS1, PS0 PS1 0 0 1 1 PS0 0 1 0 1 Description Register Page 0 1 2 3 Remark NE2000 compatible NE2000 compatible NE2000 compatible RTL8019AS Configuration 5-3 RD2-0 RD2 0 0 0 0 1 RD1 0 0 1 1 * RD0 0 1 0 1 * Function Not allowed Remote Read Remote Write Send Packet Abort/Complete remote DMA 2 1 0 TXP STA STP This bit must be set to transmit a packet. It is internally reset either after the transmission is completed or aborted. Writing a 0 has no effect. The STA bit controls nothing. It only reflects the value written to this bit. POWER UP=0. This bit is the STOP command. When it is set, no packets will be received or transmitted. POWER UP=1. STA 1 0 STP 0 1 Function Start Command Stop Command ISR: Interrupt Status Register (07H; Type=R/W in Page0) This register reflects the NIC status. The host reads it to determine the cause of an interrupt. Individual bits are cleared by writing a "1" into the corresponding bit. It must be cleared after power up. Bit 7 Symbol RST Description This bit is set when NIC enters reset state and is cleared when a start command is issued to the CR. It is also set when receive buffer overflows and is cleared when one or more packets have been read from the buffer. Set when remote DMA operation has been completed. Set when MSB of one or more of the network tally counters has been set. This bit is set when the receive buffer has been exhausted. Transmit error bit is set when a packet transmission is aborted due to excessive collisions. This bit is set when a packet received with one or more of the following errors: - CRC error - Frame alignment error -Missed packet This bit indicates packet transmitted with no errors. This bit indicates packet received with no errors. 6 5 4 3 2 RDC CNT OVW TXE RXE 1 0 PTX PRX 8019AS.doc 2001-05-10 12 ·ç¬R¥b¾ÉÅéªÑ¥÷¦³--¤½¥q SPECIFICATION RTL8019AS IMR: Interrupt Mask Register (0FH; Type=W in Page0, Type=R in Page2) All bits correspond to the bits in the ISR register. POWER UP=all 0s. Setting individual bits will enable the corresponding interrupts. DCR: Data Configuration Register (0EH; Type=W in Page0, Type=R in Page2) Bit 7 6, 5 4 Symbol FT1, FT0 ARM Description Always 1 FIFO threshold select bit 1 and 0. Auto-initialize Remote 0: Send Packet Command not executed. 1: Send Packet Command executed. Loopback Select 0: Loopback mode selected. Bits 1 and 2 of the TCR must also be programmed for Loopback operation. 1: Normal Operation This bit must be set to zero. NIC only supports dual 16-bit DMA mode. POWER UP =1 Byte Order Select (Not implement) 0: MS byte placed on MD15-8 and LS byte on MD7-0. (32xxx,80x86) 1: MS byte placed on MD7-0 and LS byte on MD15-8. (680x0) Word Transfer Select 0: byte-wide DMA transfer 1: word-wide DMA transfer 3 LS 2 1 LAS BOS 0 WTS TCR: Transmit Configuration Register (0DH; Type=W in Page0, Type=R in Page2) Bit 7 6 5 4 3 Symbol OFST ATD Description Always 1 Always 1 Always 1 Collision Offset Enable. Auto Transmit Disable. 0: normal operation 1: reception of multicast address hashing to bit 62 disables transmitter, reception of multicast address hashing to bit 63 enables transmitter. LB1 0 0 1 1 0 CRC LB0 0 1 0 1 Mode 0 1 2 3 Remark Normal Operation Internal Lookback External Lookback External Lookback 2, 1 LB1, LB0 The NIC CRC logic comprises a CRC generator for transmitter and a CRC checker for receiver. This bit controls the activity of the CRC logic. If this bit set, CRC is inhibited by transmitter. Otherwise CRC is appended by transmitter. Conditions CRC Bit Mode 0 normal 1 normal 0 loopback 1 loopback CRC Logic Activities CRC Generator CRC Checker enabled enabled disabled enabled enabled disabled disabled enabled 8019AS.doc 2001-05-10 13 ·ç¬R¥b¾ÉÅéªÑ¥÷¦³--¤½¥q SPECIFICATION RTL8019AS TSR: Transmit Status Register (04H; Type=R in Page0) This register indicates the status of a packet transmission. Bit 7 6 Symbol OWC CDH Description Out of Window Collision. It is set when a collision is detected after a slot time (51.2us). Transmissions are rescheduled as in normal collisions. CD Heartbeat. The NIC watches for a collision signal (i.e. CD Heartbeat signal) during the first 6.4us of the interframe gap following a transmission. This bit is set if the transceiver fails to send this signal. Always 1. Carrier Sense lost bit is set when the carrier is lost during transmitting a packet. It indicates the NIC aborted the transmission because of excessive collisions. It indicates the transmission collided with some other station on the network. Always 1 This bit indicates the transmission completes with no errors. 5 4 3 2 1 0 CRS ABT COL PTX RCR: Bit 7 6 5 Receive Configuration Register (0CH; Type=W in Page0, Type=R in Page2) Symbol MON Description Always 1 Always 1 When monitor mode bit is set, received packets are checked for address match, good CRC and frame alignment but not buffered to memory. Otherwise, packets will be buffered to memory. If PRO=1, all packets with physical destination address accepted. If PRO=0, physical destination address must match the node address programmed in PAR0-5. If AM=1, packets with multicast destination address are accepted. If AM=0, packets with multicast destination address are rejected. If AB=1, packets with broadcast destination address are accepted. If AB=0, packets with broadcast destination address are rejected. If AR=1, packets with length fewer than 64 bytes are accepted. If AR=0, packets with length fewer than 64 bytes are rejected. If SEP=1, packets with receive errors are accepted. If SEP=0, packets with receive errors are rejected. 4 PRO 3 2 1 0 AM AB AR SEP RSR: Receive Status Register (0CH; Type=R in Page0) Bit 7 6 5 4 3 2 1 0 Symbol DFR DIS PHY MPA FAE CRC PRX Description Defferring. Set when a carrier or a collision is detected. Receiver Disabled. When the NIC enters the monitor mode, this bit is set and receiver is disabled. Reset when receiver is enabled after leaving the monitor mode. PHY bit is set when the received packet has a multicast or broadcast destination address. It is reset when the received packet has a physical destination address. Missed Packet bit is set when the incoming packet can not be accepted by NIC because of a lack of receive buffer or if NIC is in monitor mode. Increment CNTR2 tally counter. Always 1. Frame Alignment Error bit reflects the incoming packet didn't end on a byte boundary and CRC did not match at last byte boundary. Increment CNTR0 tally counter. CRC error bit reflects packet received with CRC error. This bit will also be set for FAE errors. Increment CNTR1 tally counter. This bit indicates packet received with no errors. CLDA0, 1: Current Local DMA Registers (01H & 02H; Type=R in Page0) These two registers can be read to get the current local DMA address. 8019AS.doc 2001-05-10 14 ·ç¬R¥b¾ÉÅéªÑ¥÷¦³--¤½¥q SPECIFICATION RTL8019AS PSTART: Page Start Register (01H; Type=W in Page0, Type=R in Page 2) The Page Start register sets the start page address of the receive buffer ring. Page Stop Register (02H; Type=W in Page0, Type=R in Page2) The Page Stop register sets the stop page address of the receive buffer ring. In 8 bit mode the PSTOP register should not exceed to 0x60, in 16 bit mode the PSTOP register should not exceed to 0x80. Boundary Register (03H; Type=R/W in Page0) This register is used to prevent overwrite of the receive buffer ring. It is typically used as a pointer indicating the last receive buffer page the host has read. Transmit Page Start Register (04H; Type=W in Page0) This register sets the start page address of the packet to the transmitted. PSTOP: BNRY: TPSR: TBCR0,1: Transmit Byte Count Registers (05H & 06H; Type=W in Page0) These two registers set the byte counts of the packet to be transmitted. NCR: Number of Collisions Register (05H; Type=R in Page0) The register records the number of collisions a node experiences during a packet transmission. First In First Out Register (06H; Type=R in Page0) This register allows the host to examine the contents of the FIFO after loopback. FIFO: CRDA0, 1: Current Remote DMA Address registers (08H & 09H; Type=R in Page0) These two registers contain the current address of remote DMA. RSAR0,1: Remote Start Address Registers (08H & 09H; Type=W in Page0) These two registers set the start address of remote DMA. RBCR0,1: Remote Byte Count Registers (0AH & 0BH; Type=W in Page0) These two registers se the data byte counts of remote DMA. CNTR0: CNTR1: CNTR2: PAR0-5: Frame Alignment Error Tally Counter Register (0DH; Type=R in Page0) CRC Error Tally Counter Register (0EH; Type=R in Page0) Missed Packet Tally Counter Register (0FH; Type=R in Page0) Physical Address Registers (01H - 06H; Type=R/W in Page1) These registers contain my Ethernet node address and are used to compare the destination adderss of incoming packets for acceptation or rejection. Current Page Register (07H; Type=R/W in Page1) This register points to the page address of the first receive buffer page to be used for a packet reception. CURR: 8019AS.doc 2001-05-10 15 ·ç¬R¥b¾ÉÅéªÑ¥÷¦³--¤½¥q SPECIFICATION RTL8019AS MAR0-7: Multicast Address Register (08H - 0FH; Type=R/W in Page1) These registers provide filtering bits of multicast addresses hashed by the CRC logic. 5.1.2.2. RTL8019AS Defined Registers Page 0 (PS1=0, PS0=0) Two registers are defined to contain the RTL8019AS chip ID. No. 0AH 0BH Name 8019ID0 8019ID1 Type R R Bit7-0 50H (ASCII code of "P") 70H (ASCII code of "p") Page 3(PS1=1, PS0=1) Page3 Power Up Values before loading jumper states and 9346 contents No. 00H 01H 02H 03H 04H 05H 06H 07H 08H 09H 0AH 0BH 0CH 0DH 0EH | 0FH Name CR 9346CR BPAGE CONFIG0 CONFIG1 CONFIG2 CONFIG3 TEST CSNSAV HLTCLK INTR FMWP CONFIG4 Type R/W R/W R/W R/W R/W R/W R/W R/W R W R W R Bit 7 0 0 0 0 1 * * 0 1 * Bit 6 0 0 0 0 * * * 0 1 * Bit 5 1 0 * * 0 * 0 1 * Bit 4 0 0 * * * * 0 1 * Bit 3 0 * 0 * * * * 0 1 * Bit 2 0 * 0 * * * 0 0 1 * Bit 1 0 * 0 0 * * 0 0 1 * Bit 0 1 * 0 0 * * 1 0 1 * * 8019AS.doc 2001-05-10 16 ·ç¬R¥b¾ÉÅéªÑ¥÷¦³--¤½¥q SPECIFICATION RTL8019AS Page3 Content Descriptions 9346CR: 9346 Command Register (01H; Type=R/W except Bit0=R) Bit 7-6 Symbol EEM1-0 Description These 2 bits select the RTL8019AS operating mode. EEM1 0 0 EEM0 0 1 Operating Mode Normal (DP8390 compatible) Auto-load: Entering this mode will make the RTL8019AS load the contents of 9346 like when the RSTDRV signal is asserted. This auto-load operation will take about 2ms. After it is completed, the RTL8019AS goes back to the normal mode automatically (EEM1=EEM0 =0) and the CR register is reset to 21H. 9346 programming: In this mode, both the local & remote DMA operation of 8390 are disabled. The 9346 can be directly accessed via bit3-0 which now reflect the states of EECS, EESK,EEDI, & EEDO pins respectively. Config register write enable: Before writing to the Page3 CONFIG1-3 registers, the RTL8019AS must be placed in this mode. This will prevent RTL8019AS's configurations from accidental change. 1 0 1 1 5-4 3 2 1 0 EECS EESK EEDI EEDO Not used. These bits reflect the state of EECS, EESK, EEDI & EEDO pins in auto-load or 9346 programming mode. BPAGE: BROM Page Register (02H; Type=R/W) This register selects a BROM page to be read by the host. Totally it can select 256 pages with 16k bytes per page. Thus the maximum BROM size is 256*16k=4M bytes. 8019AS.doc 2001-05-10 17 ·ç¬R¥b¾ÉÅéªÑ¥÷¦³--¤½¥q SPECIFICATION RTL8019AS CONFIG0: RTL8019AS Configuration Register 0 (03H; Type=R except Bit[7:6]=R/W) Bit 7-6 Symbol VERID Description Version ID: These two bits are defined as below. Bit7 1 0 0 Bit6 1 0 0 Type R R R/W Mode RTL8019 RTL8019A RTL8019AS, these two bits are all "0" when power on, but can be written in RTL8019AS's config write enable mode (EEM0=EEM1=1). Software uses these differences to identify the chip. 5 4 3 2 AUI PNPJP JP BNC 1-0 0 This bit is set when external MAU is used on AUI interface. Therefore it is set when in 10Base5 mode or the AUI input pin is high. This bit is set when PNP jumper pin is pulled high externally. This bit reflects the state of JP input. It, when set, indicates the RTL8019 is in jumper mode. When set, this bit indicates that the RTL8019 is using the 10Base2 thin cable as its networking medium. This bit will be set in the following 2 cases: (1) PL1=PL0=0 (auto-detect) and link test fails (2) PL1=PL0=1 (10 Base 2) Always 0s. The following table describes the behavior of bits and pins for cabling media. Media Type 10Base5 10Base2 10BaseT Link disabled Auto detect Link OK Auto detect Link fail Auto detect Link fail AUI Input x x x x L H Selected Media AUI BNC UTP UTP BNC AUI AUI Bit 1 0 0 0 0 1 BNC Bit 0 1 0 0 1 0 LEDBNC Output L H L L H L Original BNC bit in 8019 (For reference only) 0 1 0 0 1 1 8019AS.doc 2001-05-10 18 ·ç¬R¥b¾ÉÅéªÑ¥÷¦³--¤½¥q SPECIFICATION RTL8019AS CONFIG1: RTL8019AS Configuration Register 1 (04H; Type=R except Bit7=R/W) Bit 7 Symbol IRQEN Description IRQ Enable: This bit controls the state of the interrupt request line selected by IRQS2-0. If this bit is set, the interrupt line goes high upon an interrupt request and will be low when there is no interrupt request. The interrupt line will be forced to tri-state if this bit is reset. This bit's power-up initial value is 1 and may be modified by software if EEM1=EEM0=1 in 9346CR register. IRQ Select : These 3 bits select one of INT7-0 to reflect the RTL8019AS's interrupt request status. All unselected interrupt lines will be tri-stated. IRQS2 0 0 0 0 1 1 1 1 3-0 IOS3-0 IRQS1 0 0 1 1 0 0 1 1 IRQS0 0 1 0 1 0 1 0 1 Interrupt Line INT0 INT1 INT2 INT3 INT4 INT5 INT6 INT7 Assigned ISA IRQ IRQ2/9 IRQ3 IRQ4 IRQ5 IRQ10 IRQ11 IRQ12 IRQ15 6-4 IRQS2-0 Select I/O base address. IOS3 0 0 0 0 1 1 1 1 0 0 0 0 1 1 1 1 IOS2 0 0 0 0 0 0 0 0 1 1 1 1 1 1 1 1 IOS1 0 0 1 1 0 0 1 1 0 0 1 1 0 0 1 1 IOS0 0 1 0 1 0 1 0 1 0 1 0 1 0 1 0 1 I/O Base 300H 320H 340H 360H 380H 3A0H 3C0H 3E0H 200H 220H 240H 260H 280H 2A0H 2C0H 2E0H 8019AS.doc 2001-05-10 19 ·ç¬R¥b¾ÉÅéªÑ¥÷¦³--¤½¥q SPECIFICATION RTL8019AS CONFIG2: RTL8019AS Configuration Register 2 (05H; Type=R except Bit[7:5]=R/W) Bit 7-6 Symbol PL1-0 Description Select network medium types. PL1 0 PL0 0 Medium Type TP/CX auto-detect (10BaseT link test is enabled) 10BaseT with link test disabled 10Base5 10Base2 0 1 1 5 BSELB 1 0 1 This bit, when set, forces the BROM disabled regardless of the contents of BS4-0. Its power-up initial value is 0 and can be modified by software if EEM1=EEM0=1 in 9346CR register. These bits select the BROM size & memory base address. BS4 0 0 0 0 0 0 0 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 BS3 0 1 1 1 1 1 1 0 0 0 0 0 0 0 0 1 1 1 1 1 1 1 1 BS2 * 0 0 0 0 1 1 0 0 0 0 1 1 1 1 0 0 0 0 1 1 1 1 BS1 * 0 0 1 1 0 0 0 0 1 1 0 0 1 1 0 0 1 1 0 0 1 1 BS0 * 0 1 0 1 0 1 0 1 0 1 0 1 0 1 0 1 0 1 0 1 0 1 BROM Base & size Disabled C000h, 32K C800h, 32K D000h, 32K D800h, 32K C000h, 64K D000h, 64K C000h, 16K C400h, 16K C800h, 16K CC00h, 16K D000h, 16K D400h, 16K D800h, 16K DC00h, 16K C000h, Page C400h, Page C800h, Page CC00h, Page D000h, Page D400h, Page D800h, Page DC00h, Page 4-0 BS4-0 The RTL8019AS supports a special BROM mode: page mode. In page mode, the BROM always occupies 16K-byte host memory space. However the actual BROM size can be up to 4M bytes. The BROM is divided into several 16K-byte pages. The power on boot page is set to page 0 and the program in page 0 is responsible to select the other pages by the BPAGE register and load their programs. In page mode, bits BP7-0 of BPAGE register are mapped to the BA21-14 pins to select the proper BROM page. In other modes, BA21-16 are not used and the BA15-14 outputs are shown in the following table. 8019AS.doc 2001-05-10 20 ·ç¬R¥b¾ÉÅéªÑ¥÷¦³--¤½¥q SPECIFICATION RTL8019AS BROM size 16K 32K 64K BA14 high SA14 SA14 BA15 high high SA15 CONFIG3: RTL8019AS Configuration Register 3 (06H; Type=R except Bit[2:1]=R/W) Bit 7 Symbol PNP Description This bit is negligible in jumper mode. In jumperless mode it, when set, indicates the RTL8019AS is operating in Plug and Play mode. This bit is set when the PNP pin is high or the PNP bit in 9346 is set in jumperless mode. When this bit is set, RTL8019AS is set to the full-duplex mode which enables simultaneously transmission and reception on the twisted-pair link to a full-duplex Ethernet switching hub. This feature not only increases the channel bandwidth from 10 to 20 Mbps but also avoids the performance degrading problem due to the channel contention characteristics of the Ethernet CSMA/CD protocol. These two bits select the outputs to LED2-0 pins. LEDS0 0 1 LEDS1 0 1 LED0 Pin LED_COL LED_LINK LED1 Pin LED_RX LED_CRS LED2 Pin LED_TX MCSB 6 FUDUP 5-4 LEDS1-0 3 2 SLEEP 1 PWRDN Please refer to section 6.5 for the behavior of LEDs. The MCSB signal is defined to put the local buffer SRAM into standby mode while DMA is not in progress and thus save powers. Reserved. Must not write a 1 to this bit. This bit, when set, puts RTL8019AS into sleep mode. In sleep mode, all LED signals (P.S. MCSB is not an LED signal) except LEDBNC are forced high to turn off the LEDs. The RTL8019AS still handles the network transmission and reception like in normal mode. The LEDBNC is not affected by this bit. This bit's power-up initial value is 0 and can be modified by software when EEM1=EEM0=1. This bit , when set, puts RTL8019AS into power down mode. RTL8019AS supports two kinds of power down modes, which is selected by the contents of the HLTCLK register: (1) mode 1: power down with clock running (2) mode 2: power down with clock halted In both power down modes, the RTL8019AS's serial network interface and transceiver are turned off. All network activities are ignored. All LED signals except LEDBNC are forced high. The LEDBNC is forced low to disable the DC convertor for coaxial transceiver. In power down mode2, the RTL8019AS stops its internal clock for minimal power consumption. Registers except HLTCLK are typically not accessible in this mode. This bit's initial value comes from 9346 and can be modified if EEM1=EEM0=1 in 9346CR register. 8019AS.doc 2001-05-10 21 ·ç¬R¥b¾ÉÅéªÑ¥÷¦³--¤½¥q SPECIFICATION RTL8019AS 0 ACTIVEB This bit is the inverse of bit 0 in PnP Activate register (index 30H). When RTL8019AS is deactivated, all BROM memory read and I/O accesses to the Group1 registers except the HLTCLK register are ignored. The HLTCLK register and PnP logic work the same as when RTL8019AS is active. Note: The PnP logical device control register is the only way to activate RTL8019AS. Therefore, the HLTCLK register is allowed to be written to prevent RTL8019AS from dying when it is inactive in the clock-halted power-down mode. CONFIG4 RTL8019AS Configuration Register 4 (0DH; Type=R) Bit 7-1 0 Symbol IOMS Description Reserved When this bit is set, RTL8019AS uses SA15-SA0 to decode I/O address of NE2000 registers. When this bit is reset, RTL8019AS only decodes SA9-SA0 like the RTL8019 does. This mode is supported for applications which might require to fully decode I/O address. This bit is read-only and comes from the CONFIG4 byte(Offset 03H) of 9346(refer to section 6.3). CSNSAV: CSN Save Register (08H; Type=R) This register is provided to backup the CSN assigned to the PnP CSN register. HLTCLK: Halt Clock Register (09H; Type=W) This is the only active one of Group1 registers when RTL8019AS is inactivated. Writing to this register is invalid if RTL8019AS is not in power down mode. (i.e. If PWRDN bit in CONFIG3 register is zero.) The data written to this register determines the RTL8019AS's power down mode. Data 52H (ASCII code of 'R') 48H (ASCII code of 'H') Other values Power Down Mode Mode 1 - clock Running Mode 2 - clock Halted Ignored INTR: Interrupt Register (0BH; Type=R) This register reflects the ISA bus states of INT7-0 pins. FMWP: Flash Memory Write Protect Register (0Ch, Type=W) This register is write only. A write to this register is valid only when EEM0=EEM1=1. Sequentially writing 2 bytes of data (57H then A8H) to this register enables the flash memory write operation. Writing other data to this register will reset the write sequence and disable the flash write. All flash memory write commands from host are ignored if the write operation is not enabled. 8019AS.doc 2001-05-10 22 ·ç¬R¥b¾ÉÅéªÑ¥÷¦³--¤½¥q SPECIFICATION RTL8019AS 5.2. Group 2: Plug and Play (PnP) Registers Auto-configuration Ports Three 8-bit I/O ports are defined for the PnP read/write operations. They are called Autoconfiguration ports and are listed below. Port Name ADDRESS WRITE_DATA READ_DATA Type W W R Location 279H (Printer status port) A79H (Printer status port + 800H) Relocatable in range 200H to 3FFH The Plug and Play registers are accessed by first writing the address of the desired register, which is called "Register Index" in the following paragraph, to the ADDRESS port, followed by a read of data from the READ_DATA port or a write of data to the WRITE_DATA port. A write to the ADDRESS port may be followed by any number of WRITE_DATA or READ_DATA accesses to the same indexed register without the need to write to the ADDRESS port before each access. The Address port is also the write destination of the initiation key, which will be described later. Plug and Play Registers The Plug and Play registers may be divided into card registers and logical device registers. According to the Plug and Play specification, a PnP card may contain more than one logical devices. The card registers are unique for each card. However, the logical device registers are repeated for each logical device on the card. Furthermore, all card registers are card control registers, while the logical device registers can be divided into logical device control registers and configuration registers. Although an RTL8019AS card contains only one logical device, the following paragraph still depicts the Plug and Play registers by the same PnP categorizing method. p.s. Those registers or bits not mentioned below are all read only with value=0. 8019AS.doc 2001-05-10 23 ·ç¬R¥b¾ÉÅéªÑ¥÷¦³--¤½¥q SPECIFICATION RTL8019AS 5.2.1. Card Control Registers Index 00H Name Set RD_DATA port Type W Definition The location of the READ_DATA port is determined by writing to this register. Bits[7:0] become ISA I/O read port address bits[9:2]. Address bits[1:0] of the READ_DATA port are always 1. A read to this register causes a PnP card in the Isolation state to compare one bit of the card's serial ID. This process will be described in more details in section 6. Bit[0] - Reset command Setting this bit will reset all logical devices and restore configuration registers to their power-up values. The CSN is preserved. Bit[1] - Wait for Key command Setting this bit makes the PnP card return to the Wait for Key state. The CSN is preserved. Bit[2] - PnP Reset CSN command Setting this bit will reset the card's CSN to 0. Both the CSN (index 06H) and CSNSAV (index F5H) registers are reset. Note that the hardware will automatically clear the bits and there is no need for software to clear them. A write to this register will cause all cards that have a CSN that matches the write data[7:0] to go from the Sleep state to either the Isolation state if the write data for this command is zero or the Config state if the write data is not zero. A read from this register reads the next byte of resource data. The Status register must be polled until bit[0] is set before this register may be read. Bit[0] when set indicates it is okay to read the next data byte from the Resource Data register. A write to this register sets a card's CSN. The CSN is a value uniquely assigned to each ISA PnP card after the serial identification process so that each card may be individually selected during a Wake[CSN] command. The CSN value written to this register will also be recorded to the CSNSAV register located at PnP register index F5H and Group 1 Page3 offset 08H. 00H (Only one logical device in RTL8019AS). 01H Serial Isolation R 02H Config Control W 03H Wake[CSN] W 04H Resource Data R 05H 06H Status Card Select Number (CSN) R R/W 07H Logical Device Number R 8019AS.doc 2001-05-10 24 ·ç¬R¥b¾ÉÅéªÑ¥÷¦³--¤½¥q SPECIFICATION RTL8019AS 5.2.2. Logical Device Control Registers Index 30H Name Activate Type R/W Definition For each logical device there is one Activate register that controls whether or not the logical device is active on the ISA bus. Bit[0], if set, activates the logical device. Before a logical device is activated, I/O range check must be disabled. This register is used to perform a conflict check on the I/O port range programmed for use by a logical device. Bit[1] - This bt, when set, enables I/O range check. I/O range check is only valid when the logical device is inactive. Bit[0] - If set, this bit forces the logical device to respond to I/O reads of the logical device's assigned I/O range with a 55H when I/O range check is in operation. If clear, the logical device drives AAH. 31H I/O Range Check R/W 5.2.3. Logical Device Configuration Registers Memory Configuration Registers Index 40H 41H 42H Name BROM base address bits[23:16] BROM base address bits[15:0] Memory Control Type R/W R/W R Definition Bits[23:20] & bit[17] are read only with values=0. All other bits are read/write bits. Bits[13:8] are read only with values=0. All other bits are read/write bits. 00H. (Only 8-bit operation is supported for BROM) Note: The BROM size of RTL8019AS is determined by the 9346 contents but not the memory configuration registers. I/O Configuration Registers Index 60H 61H Name I/O base address bits[15:8] I/O base address bits[7:0] Type R/W R/W Definition Bits[15:10] are read only with values=0. All other bits are read/write bits. Bits[4:0] are read only with values=0. All other bits are read/write bits. Interrupt Configuration Registers Index 70H Name IRQ level Type R/W Definition Read/write value indicating a selected interrupt level. Bits[3:0] select which ISA interrupt level is used. One selects IRQ1, fifteen selects IRQ15. IRQ0 is not a valid interrupt selection and represents no interrupt selection. 8019AS.doc 2001-05-10 25 ·ç¬R¥b¾ÉÅéªÑ¥÷¦³--¤½¥q SPECIFICATION RTL8019AS Read/Write value indicating which type of interrupt is used for the IRQ selected above. Bit[1] - Level, 1=high, 0=low Bit[0] - Type, 1=level, 0=edge For RTL8019AS, this register is read only with value=02H. 71H IRQ type R DMA Configuration Registers Index 74H 75H Name DMA channel select 0 DMA channel select 1 Type R R Definition 04H (indicating no DMA channel is needed) 04H (indicating no DMA channel is needed) Vendor Defined Registers Index F0H F1H F2H F3H F4H F5H F6H Name CONFIG0 CONFIG1 CONFIG2 CONFIG3 CSNSAV Vendor Control Type R R R R R W Definition Direct mapping of the Page3 CONFIG0 register. Direct mapping of the Page3 CONFIG1 register. Direct mapping of the Page3 CONFIG2 register. Direct mapping of the Page3 CONFIG3 register. Direct mapping of the Page3 CSNSAV register. Bit[2] - RT Reset CSN command Setting this bit will reset the card's CSN in the CSN register (index 06H) to 0. The CSNSAV register is not affected. This bit is cleared by hardware automatically. 8019AS.doc 2001-05-10 26 ·ç¬R¥b¾ÉÅéªÑ¥÷¦³--¤½¥q SPECIFICATION RTL8019AS 6. Functional Descriptions 6.1. RTL8019AS Configuration Modes The RTL8019AS supports 3 configuration modes: jumper, RT jumperless, and PnP. JP Pin H L L L PnP Pin H L H L L 9346 Content PNP ACTIVEB x x x 1 0 a (a=0or1) a (a=0or1) x Mode Jumper PnP PnP RT jmpless JP 1 0 0 0 CONFIG0 PNPJP 1 0 1 0 0 CONFIG3 PNP ACTIVEB 0 0 1 1 0 a a 0 P.S. "x" denotes don't care. The RTL8019AS's resource configuration informations such as I/O base address, BROM memory base address, and interrupt request line, etc., are stored in the CONFIG3-0 registers in Group1 Page3 as well as the PnP logical device configuration registers. Their power-up default values may come from the states of jumper pins in jumper mode or the contents of 9346 in PnP and RT jumperless mode. Their values can be modified by software via the logical device configuration registers in all 3 modes. The update values will be recorded to the CONFIG3-0 registers, too. This new configuration is only valid temporarily and will be lost after an auto-load command, an active RSTDRV, or PC power off . Permanent changes of configuration must be done by changing the jumper states or the contents of 9346. Note that the BROM size can not be modified temporarily. The Plug and Play logic can work in all the three configuration modes except that an RT defined initiation key, named RT initiation key, should be used instead of the PnP initiation key. In other words, the RT initiation key is supported in all configuration modes while the PnP initiation key is only supported in the PnP mode. By using the RT initiation key, the software can put RTL8019AS to the PnP Config state and access the logical device configuration registers even in the jumper and RT jumperless modes. Power up default ACTIVE state In RTL8019, the ACTIVEB bit in 93C46 decides the power-up adapter status even in RT jumpless mode. In the standard application when BROM is not enabled, the adapter should be power up inactive in PnP mode and active in RT jumperless mode. However RTL8019's PnP jumper only decides the jumperless mode. The adapter's "ACTIVE" status is not changed properly at the same time when the user changes the PnP jumper state. This causes an application inconsistence when PnP jumper is to be used. In RTL8019AS, we change RTL8019's original specification into: The ACTIVEB bit in 9346 is ignored when RTL8019AS is in jumper or RT jumperless mode. The adapter's power-up status is always "ACTIVE" in RT jumperless mode. However, the active status still can be changed via the PnP Activate register. 8019AS.doc 2001-05-10 27 ·ç¬R¥b¾ÉÅéªÑ¥÷¦³--¤½¥q SPECIFICATION RTL8019AS The differences between the 3 configuration modes are shown in the following table. Configuration Mode Jumper RT Jumperless Plug and Play Resource of Power-up Value Jumper Pins 9346 9346 Supported Initiation Key RT Initiation Key RT Initiation Key RT and PnP Initiation Key Initial Values of CONFIG1-3 Registers after RSTDRV or Auto-load Command CONFIG1 Mode Jumper RT Jumperless Plug and Play Bit 7 Bit 6 Bit 5 Bit 4 Bit 3 Bit 2 IRQEN IRQS2 IRQS1 IRQS0 IOS3 IOS2 1 jumper jumper jumper jumper jumper 1 9346 9346 9346 9346 9346 Bit 1 IOS1 jumper 9346 Bit 0 IOS0 jumper 9346 CONFIG2 Mode Jumper RT Jumperless Plug and Play Bit 7 Bit 6 Bit 5 Bit 4 Bit 3 Bit 2 PL1 PL0 BSELB BS4 BS3 BS2 jumper jumper 0 jumper jumper jumper 9346 9346 0 9346 9346 9346 Bit 1 BS1 jumper 9346 Bit 0 BS0 jumper 9346 CONFIG3 Mode Jumper RT Jumperless Plug and Play Bit 7 PNP 0 0 1 Bit 6 Bit 5 Bit 4 FUDUP LEDS1 LEDS0 9346 9346 9346 9346 9346 9346 Bit 3 Bit 2 Bit 1 Bit 0 SLEEP PWRDN ACTIVEB 0 9346 9346 0 9346 9346 8019AS.doc 2001-05-10 28 ·ç¬R¥b¾ÉÅéªÑ¥÷¦³--¤½¥q SPECIFICATION RTL8019AS 6.2. Plug and Play 6.2.1. Initiation Key The Plug and Play logic is quiescent on power up and must be enabled by software. This is done by a predefined series of writes (32 I/O writes) to the ADDRESS port, which is called the initiation key. The write sequence is decoded by RTL8019AS. If the proper series of I/O writes is detected, then the Plug and Play auto-configuration ports are enabled. The write sequence will be reset and must be issued from the beginning if any data mismatch occurs. The exact sequence for the initiation key is listed below in hexadecimal notation. PnP Initiation Key 6A, DF, B0, E8, B5, 6F, 58, 74, DA, 37, 2C, 3A, ED, 1B, 16, 9D, F6, 0D, 8B, CE, FB, 86, 45, E7, 7D, C3, A2, 73, BE, 61, D1, 39 RT Initiation Key DA, 48, 13, 65, 6D, A4, 89, 32, 36, D2, 44, 19, 1B, 69, A2, 0C, 8D, 34, 51, 86, 46, 9A, 28, 43, 23, 4D, 94, A1, 91, 26, CA, 50 8019AS.doc 2001-05-10 29 ·ç¬R¥b¾ÉÅéªÑ¥÷¦³--¤½¥q SPECIFICATION RTL8019AS 6.2.2. Isolation Protocol A simple algorithm is used to isolate each Plug and Play card. This algorithm uses the signals on the ISA bus and requires lock-step operation between the Plug and Play hardware and the isolation software. State Isolation Read from serial isolation register Get one bit from serial identifier no yes Drive "55H" on SD[7:0] ID bit="1H" Leave SD [7:0] in high-impedance no SD[1:0]="01" yes Wait for next read from serial isolation register Drive "AAH" on SD[7:0] Leave SD [7:0] in high impedance no SD[1:0]="10" After I/O read completes fetch next ID bit from serial identifier yes ID=0 other card ID=1 no Read all 72 bits from serial identifier yes State Sleep One card isolated Figure 1. Plug and Play ISA Card Isolation Algorithm 8019AS.doc 2001-05-10 30 ·ç¬R¥b¾ÉÅéªÑ¥÷¦³--¤½¥q SPECIFICATION RTL8019AS Serial Identifier The key element of the Plug and Play isolation protocol is that each card contains a unique number, named serial identifier. The serial identifier is a 72-bit unique, non-zero number composed of two 32-bit fields and an 8-bit checksum. The first 32-bit field is a vendor identifier. The other 32-bits can be any value, for example, a serial number, part of a LAN address, or a static number, as long as there will never be two cards in a single system with the same 64-bit number. The serial identifier is accessed bit-serially by the isolation logic and is used to differentiate the cards. Checksum Byte 0 7:0 Byte 3 7:0 Serial Number Byte 2 7:0 Byte 1 7:0 Byte 0 7:0 Byte 3 7:0 Vendor ID Byte 2 7:0 Byte 1 7:0 Byte 0 7:0 Shift Figure 2. Shifting of Serial Identifier The shift order for all Plug and Play serial isolation and resource data is defined as bit[0], bit[1], and so on through bit[7]. Hardware Protocol The isolation protocol can be invoked by the Plug and Play software at any time. The initiation key described earlier, puts all cards into configuration mode. The hardware on each card expects 72 pairs of I/O read accesses to the READ_DATA port. The card's response to these reads depends on the value of each bit of the serial identifier which is being examined one bit at a time, in the sequence shown in Figure 1. If the current bit of the serial identifier is a "1", then the card will drive the data bus to 55H to complete the first I/O read cycle. If the bit is "0", then the card puts its data bus driver into high impedance. All cards in high impedance will check the data bus during the I/O read cycle to sense if another card is driving SD[1:0] to "01". During the second I/O read, the card(s) that drove the 55H, will now drive a AAH. All high impedance card will check the data bus to sense if another card is driving SD[1:0] to "10." If a high impedance card sensed another card driving the data bus with the appropriate data during both cycles, then that card ceases to participate in the current iteration of card isolation. Such cards, which lose out, will participate in future iterations of the isolation protocol. NOTE: During each read cycle, the Plug and Play hardware drives the entire 8-bit data bus, but only checks the lower 2 bits. If a card was driving the bus or if the card was in high impedance and did not sense another card driving the bus, then it should prepare for the next pair of I/O reads. The card shifts the serial identifier by one bit and uses the shifted bit to decide its response. The above sequence is repeated for the entire 72-bit serial identifier. 8019AS.doc 2001-05-10 31 ·ç¬R¥b¾ÉÅéªÑ¥÷¦³--¤½¥q SPECIFICATION RTL8019AS At the end of this process, one card remains. This card is assigned a handle referred to as the Card Select Number (CSN) that will be used later to select the card. Cards which have been assigned a CSN will not participate in subsequent iterations of the isolation protocol. Cards must be assigned a CSN before they will respond to the other PnP commands. It should be noted that the protocol permits the 8-bit checksum to be stored in non-volatile memory on the card or generated by the on-card logic in real-time. The checksum algorithm is implemented as a Linear Feedback Shift Register (LFSR), which is shown in Figure 3. Vendor ID/ Serial number 7 Read of Serial Isolation register Reset values 6 5 4 3 2 1 0 Shift out 0 1 1 0 1 0 1 0 Figure 3. Checksum LFSR The LFSR resets to 6AH upon receiving the Wake[CSN] command. The next shift value for the LFSR is calculated as LFSR[1] XOR LFSR[0] XOR Serial Data. The LFSR is shifted right one bit at the conclusion of each pair of reads to the Serial Isolation register. LFSR[7] is assigned the next shift value described above. After the first 64 pairs of reads of the Serial Isolation register, the LFSR will have the value of serial identifier checksum. Plug and Play cards must not drive the IOCHRDY signal during serial isolation. However, cards may drive IOCHRDY at any other time. Software Protocol The Plug and Play software sends the initiation key to all Plug and Play cards to place them into configuration mode. The software is then ready to perform the isolation protocol. The Plug and Play software generates 72 pairs of I/O read cycles from the READ_DATA port. The software checks the data returned from each pair of I/O reads for the 55H or AAH driven by the hardware. If both 55H or AAH are read back, then the software assumes that the hardware had a "1" bit in that position. All other results are assumed to be a "0". During the first 64 bits, software generates a checksum using the received data. The checksum is compared with the checksum read back in the last 8 bits of the sequence. 8019AS.doc 2001-05-10 32 ·ç¬R¥b¾ÉÅéªÑ¥÷¦³--¤½¥q SPECIFICATION RTL8019AS There are two other special considerations for the software protocol. During an iteration, it is possible that the 55H and AAH combination is never detected. It is also possible that the checksum does not match. If either of these cases occur on the first iteration, it must be assumed that the READ_DATA port is in conflict. If a conflict is detected, then the READ_DATA port is relocated. The above process is repeated until a non-conflicting location for the READ_DATA port is found. The entire range between 200H and 3FFH is available, however in practice it is expected that only a few locations will be tried before software determines that no Plug and Play cards are present. During subsequent iterations, the occurrence of either of these two special cases should be interpreted as the absence of any further Plug and Play cards (i.e. the last card was found in the previous iteration). This terminates the isolation protocol. NOTE: The software must delay 1 msec prior to starting the first pair of isolation reads, and must wait 250 msec between each subsequent pair of isolation reads. This delay gives the ISA card time to access information from possibly very slow storage devices. 8019AS.doc 2001-05-10 33 ·ç¬R¥b¾ÉÅéªÑ¥÷¦³--¤½¥q SPECIFICATION RTL8019AS 6.2.3. Plug and Play Isolation Sequence The Plug and Play isolation sequence is divided into four states: Wait for Key, Sleep, Isolation, and Config states. The state transitions for the Plug and Play ISA card are shown below. Power up RSTDRV or Reset command Set CSN=0 State Wait for Key Active Commands no active commands initiation key State Sleep Active Commands Reset Reset CSN Wait for Key Wake [CSN] (WAKE0) AND (WAKE=CSN) WAKECSN State Active Commands Reset Reset CSN Wait for Key Wake [CSN] Resource Data Status Logical Device I/O Range Check Activate Configuration Registers (WAKE=0) AND (CSN=0) Lose serial isolation OR (WAKECSN) State Active Commands Reset Reset CSN Wait for Key Set RD_DATA Port Serial isolation Wake [CSN] Set CSN Isolation Set CSN Config NOTES: 1. CSN= Card Select Number 2. RSTDRV causes a state transition from the current state to Wait for Key and sets all CSNs to zero 3. The Wait for Key command causes a state transition from the current state to Wait for Key 4. The Reset CSN commands include PnP Reset CSN and RT Reset CSN commands. The former sets all ISA PnP cards' CSNs to zero while the latter only sets RTL8019 PnP cards' CSNs to zero. Both commands do not cause a state transition. Figure 4. Plug and Play ISA Card State Transitions 8019AS.doc 2001-05-10 34 ·ç¬R¥b¾ÉÅéªÑ¥÷¦³--¤½¥q SPECIFICATION RTL8019AS On power up, all PnP cards detect RSTDRV, set their CSN to 0, and enter the Wait for Key state. There is a required 2 msec delay from either a RSTDRV or a PnP Reset command to any Plug and Play port access to allow a card to load initial configuration information from a non-volatile device, which is 9346 for RTL8019AS. Cards in the Wait for Key state do not respond to any access to their auto-configuration ports until the initiation key is detected. Cards ignore all ISA access to their Plug and Play interface. When the cards have received the initiation key, they enter the Sleep state. In this state, the cards listen for a Wake[CSN] command with the write data set to 00H. This wake[CSN] command will send all cards to the Isolation state and reset the serial identifier/resource data pointer to the beginning. The first time the cards enter the Isolation state it is necessary to set the READ_DATA port address using the Set RD_DATA port command. The software should then verify the selected READ_DATA port address is not in conflict with any other devices by the isolation protocol. Next, 72 pairs of reads are performed to the Serial Isolation register to isolate a card as described previously. If the checksum read from the card is valid, then this means one card has been isolated. The isolated card remains in the Isolation state while all other cards have failed the isolation protocol and have returned to the Sleep state. The CSN on this card is set to a unique number. Writing this value causes this card to transition to the Config state. Sending a Wake[0] command causes this card to transition back to Sleep state and all cards with a CSN value of zero to transition to the Isolation state. This entire process is repeated until no Plug and Play cards are detected. 6.2.4. Reading Resource Data Each PnP card supports a resource data structure stored in a non-volatile device (e.g. 9346) to describe the resources supported and those requested by the functions on the card. The Plug and Play resource management software will arbitrate resources and setup the logical device configuration registers according to the resource data. Card resource data may only be read from cards in the Config state. A card may get to the Config state by one of two different methods. A card enters the Config state in response to the card "winning" the serial isolation protocol and having a CSN assigned. The card also enters the Config state in response to receiving a Wake[CSN] command that matches the card's CSN. As described above, all Plug and Play cards function as if their serial identifier and their resource data both come from the same serial device. As also stated above, the pointer to the serial device is reset in response to any Wake[CSN] command. This implies that if a card enters the Config state directly in response to a Wake[CSN] command, the 9-byte serial identifier must be read first before the card resource data is accessed. The Vendor ID and Unique Serial Number is valid; however, the checksum byte, when read in this way, is not valid. A card that enters the Config state after the isolation protocol has been run has already accessed all 72 bits of the serial identifier and the first read of the Resource Data register will return resource data. 8019AS.doc 2001-05-10 35 ·ç¬R¥b¾ÉÅéªÑ¥÷¦³--¤½¥q SPECIFICATION RTL8019AS Card resource data is read by first polling the Status register and waiting for bit[0] to be set. When this bit is set it means that one byte of resource data is ready to be read from the Resource Data register. After the Resource Data register is read, the Status register must be polled before reading the next byte of resource data. This process is repeated until all resource data is read. The format of resource data is described in the following section. The above operation implies that the hardware is responsible for accumulating 8 bits of data in the Resource Data register. When this operation is complete, the status bit[0] is set. When a read is performed on the Resource Data register, the status bit[0] is cleared, eight more bits are shifted into the Resource Data register, then the status bit[0] is set again. 6.2.5. PnP auto detect mode When using RTL8019, the user needs to setup the card to PnP or jumperless mode according to the host environments. The typical operating modes of a RTL8019 card include: (1) when used in a non-PnP PC, set the card to RT jumperless mode & power-on active (2) when used in a PnP PC, (2.1) if BROM disabled, set the card to PnP mode & power-on inactive (2.2) if BROM enabled, set the card to PnP mode & power-on active P.S. PCs with PnP BIOS, or Windows 95, or Intel Configuration Manager, etc. are called PnP PCs If a card in mode(2.1) is put in a non-PnP PC, the drivers will fail to initialize the card. RTL8019AS supports a PnP auto-detect mode to solve the problem. The card may be set to a default state: PnP mode & power-on active with BROM disabled. If the card is in a non-PnP PC, it will work like a normal jumperless card. If the card is in a PnP PC which requires the card to be power-on inactive, RTL8019AS will change itself into inactive state when the first time a PnP init key is detected. 8019AS.doc 2001-05-10 36 ·ç¬R¥b¾ÉÅéªÑ¥÷¦³--¤½¥q SPECIFICATION RTL8019AS 6.3. 9346 Contents The 9346 is a 1k-bit EEPROM. Although it is actually addressed by words, we list its contents by bytes below for convenience. Bytes 00H - 03H (4 bytes) 00H 01H 02H 03H 04H - 11H (14 bytes) 04H - 09H 0AH - 11H CONFIG1 CONFIG2 CONFIG3 CONFIG4 NE2000 IDPROM Ethernet node address Assigned by card makers; negligible Plug and Play Serial Identifier Vendor ID 0-3 Serial Number 0-3 Serial ID Checksum Plug and Play Resource Data Contents Comments Power-up initial value of Page3 and PnP logical device configuration registers Ethernet ID 0-5 Product ID 0-7 12H - 1AH (9 bytes) 12H - 15H 16H - 19H 1AH 1BH - 7FH (101 bytes) Detail values of 9346 CONFIG1-3 bytes Bit 7 CONFIG1 * CONFIG2 PL1 CONFIG3 PNP Bit 6 IRQS2 PL0 FUDUP Bit 5 IRQS1 * LEDS1 Bit 4 IRQS0 BS4 LEDS0 Bit 3 IOS3 BS3 * Bit 2 IOS2 BS2 * Bit 1 IOS1 BS1 PWRDN Bit 0 IOS0 BS0 ACTIVEB P.S. '*' denotes don't care. Example : Plug and Play Resource Data for RTL8019AS (Total 73+5 bytes) TAG Plug and Play Version Number Item byte 0AH PnP version 10H Vendor version 10H ANSI Identifier String Item byte Length bits 7-0 Length bits 15-8 Identifier string Logical Device ID Item byte Logical device ID0-3 Flag 0 Flag 1 Length: fixed 3 bytes TAG Length: variable 37 bytes 82H 22H 00H 'REALTEK PLUG & PLAY ETHERNET CARD', 00H Length: fixed 7 bytes 16H 4AH, 8CH, 80H, 19H 02H or 03H (use 03H when BROM is enabled) 00H 5 bytes if given TAG TAG 8019AS.doc 2001-05-10 Compatible Device ID (NE2000 compatible) Length: fixed 37 ·ç¬R¥b¾ÉÅéªÑ¥÷¦³--¤½¥q SPECIFICATION RTL8019AS 1CH 41H, D0H, 80H, D6H Length: fixed 47H 00H 20H 02H 80H 03H 20H 20H Length: fixed 23H 38H 9EH 01H Length: fixed 12 bytes This example uses 16k-byte BROM. 4 bytes 8 bytes Item byte Compatible ID0-3 TAG I/O Format Item byte I/O information Min. I/O base bits 7-0 Min. I/O base bits 15-8 Max. I/O base bits 7-0 Max. I/O base bits 15-8 Base alignment Range length IRQ Format Item byte IRQ mask bits 7-0 IRQ mask bits 15-8 IRQ information Memory Format (optional) Item byte Length bits 7-0 Length bits 15-8 Memory information Min. base bits 15-8 Min. base bits 23-16 Max. base bits 15-8 Max. base bits 23-16 Base alignment bits 7-0 Base alignment bits 15-8 Range length bits 15-8 Range length bits 23-16 END Tag Item byte Checksum TAG TAG 81H 09H 00H 40H 00H 0CH C0H 0DH 00H 40H 40H 00H TAG Length: fixed 2 bytes 79H 2's complement of the sum of all the above resource data i.e. 2's complement of (0AH+10H+10H+.......+79H) 6.4. Boot ROM Whether a EPROM or flash memory is used as the BROM, RTL8019AS's BROM read operation is still the same as RTL8019's. The supported BROM size is the same, too. The write operation of a flash memory is much like the read except that a SMEMWB command is issued instead of SMEMRB. The block diagram below shows the application when an 128k*8bit flash memory (e.g. 29F010) is used as the BROM. 8019AS.doc 2001-05-10 38 ·ç¬R¥b¾ÉÅéªÑ¥÷¦³--¤½¥q SPECIFICATION RTL8019AS 29F010 SA13-0 SMEMWB SMEMRB A13-0 WEB OEB A16-14 IO7-0 CEB BA16-14 BD7-0 BCSB From ISA Bus Through RTL8019AS In this case, the BROM page mode is used. Before either to read or write BROM, the appropriate ROM page must be set in the BPAGE (page3, offset 02h) register first. The RTL8019AS will always reflect the content of BPAGE onto the BA14-21 bus. When RTL8019AS decodes a valid BROM read or write command, it asserts BCSB low. Note the flash memory write must be enabled through the RTL8019AS's FMWP register before the host's flash write command. 8019AS.doc 2001-05-10 39 ·ç¬R¥b¾ÉÅéªÑ¥÷¦³--¤½¥q SPECIFICATION RTL8019AS 6.5. LED Behaviors This section describes the lighting behaviors of the LED output signals which may be selected by LEDS1 and LEDS0 bits in the Page3 CONFIG3 register. P.S. It is assumed that the LED is on when the signal goes low. (1) LED_TX: Tx LED Power On LED=low No Transmitting Packet? Yes LED=high for (100 + 10) ms LED=low for (6+ 2) ms (2) LED_RX: Rx LED Power On LED=low No Receiving Packet? Yes LED=high for (100 +10) ms LED=low for (6 +2) ms 8019AS.doc 2001-05-10 40 ·ç¬R¥b¾ÉÅéªÑ¥÷¦³--¤½¥q SPECIFICATION RTL8019AS (3) LED_CRS=LED_TX+LED_RX: Carrier Sense LED Power On LED=low No Tx or Rx Packet? Yes LED=high for (100 + 10) ms LED=low for (6 + 2) ms (4) LED_COL: Collision LED Power On LED=high No Collision (except Heartbeat)? Yes LED=low for (10 + ms 5) 8019AS.doc 2001-05-10 41 ·ç¬R¥b¾ÉÅéªÑ¥÷¦³--¤½¥q SPECIFICATION RTL8019AS LED1 (LED_RX or LED_CRS) RTL8019's LED_RX or LED_CRS LED sometimes keeps blinking when the media type of a 2-in1 (UTP+BNC) LAN adapter is set to auto-detect and both UTP and coaxial cable are not connected. In the case, RTL8019 is actually using the BNC because the UTP link test fails. Many 8392 will falsely detect a carrier when the BNC inteface is not properly terminated (e.g. coaxial cable is not connected). That carrier sense will then make RTL8019's LED_RX or LED_CRS blink. The problem is that not all 8392s cause the LED blinking, which makes the phenomenon very ambiguous. Considering the phenomenon is normally awared upon power on, we change RTL8019's original function to solve the problem to some extent. The new specification is: The LED_RX or LED_CRS does not reflect the carrier sense when the CR register bit 0 is set (in stop mode). Thus, the false carrier due to cabling problem upon power on will not cause the LED1 to blink anymore. LED Output States in Power Down Modes LED Output LEDBNC LED_LINK LED_COL LED_TX LED_RX LED_CRS Normal Mode / Idle High Low Low Low Sleep Mode High High High High High Power Down Mode Low High High High High High 6.6. Loopback Diagnostic Operation 6.6.1. Loopback operation The RTL8019AS provides 3 loopback modes. By loopback test, we can verify the integrity of data path, CRC logic, address recognition logic and cable connection status. Mode 1: Loopback through the NIC (LB1=0, LB0=1 in TCR). The NRZ data is not transmitted to the SNI but instead it's loopbacked to the NIC's Rx deserializer. The traffic on the cable is ignored. Ref: NIC 8390 SNI 83910 Mode 2: Loopback through the SNI (LB1=1, LB0=0 in TCR) The Manchester encoded data is not transmitted to the MAU. It's loopbacked through the SNI to NIC. The traffic on the cable is ignored. Ref: NIC 8390 SNI 83910 MAU 8392/RTL8005 8019AS.doc 2001-05-10 42 ·ç¬R¥b¾ÉÅéªÑ¥÷¦³--¤½¥q SPECIFICATION RTL8019AS Mode 3: Loopback through the cable (LB1=1, LB0=1 in TCR) The packets are transmitted via the MAU onto the network and RTL8009 receives all incoming packets (not only the MAU-loopbacked Tx data) in the meantime. CABLE Ref: NIC 8390 SNI 83910 MAU 8392/RTL8005 q Alignment of the Reception FIFO The reception FIFO is an 8-byte ring structure. The first received byte is put at location zero. When the location pointer goes to the end of the FIFO, it wraps to the beginning of the FIFO and overwrites the previous data. At the end of the packet reception, the FIFO contents are in the "order" (from the ring structure's view) as shown below. (1) CRC enabled (CRC bit in TCR=0) s 1-byte received packet data s 4-byte CRC s 1-byte lower byte count s 1-byte upper byte count s 1-byte upper byte count (2) CRC disabled (CRC bit in TCR=1) s 5-byte received packet data s 1-byte lower byte count s 1-byte upper byte count s 1-byte upper byte count 6.6.2. To Implement Loopback Test (1) To verify the integrity of data path s set RCR=00h to accept physical packet s set PAR0-5 to accept packet s set DCR=40h (8-bit slot) or 43h (16-bit slot) s set TCR=02h, 04h, 06h to do loopback test 1, 2, 3 respectively s set CRC enabled (CRC=0 in TCR) s clear ISR s tx a packet and check ISR s check FIFO after loopback Note: Loopback mode 3 is sensitive to the network traffic, so the values of FIFO may be not correct. (2) To verify CRC logic q Select a loopback mode (e.g. mode 2) to test A. To test CRC generator s set RCR=00h to accept physical packet 43 8019AS.doc 2001-05-10 ·ç¬R¥b¾ÉÅéªÑ¥÷¦³--¤½¥q SPECIFICATION RTL8019AS s s s s s s set PAR0-5 to accept packet set TCR=04h (CRC enabled) set DCR=40h (8-bit slot) or 43h (16-bit slot) clear ISR tx a packet check CRC bytes in FIFO after loopback B. To test CRC checker s set RCR=00h to accept physical packet s set PAR0-5 to accept packet s set TCR=05h (CRC disabled) s set DCR=40h (8-bit slot) or 43h (16-bit slot) s clear ISR s tx a packet with good or bad CRC appended by program s check FIFO, ISR & RSR after loopback For bad CRC, expected: ISR=06h, RSR=02h (Tx: OK, Rx:CRC error) For good CRC, expected: ISR=02h, RSR=01h (Tx:OK, Rx: OK) Note: In loopback mode, the received packets are not stored to SRAM, so PRX bit in ISR isn't set. (3) To verify the address recognition function q Select a loopback mode (e.g. mode 2) to test A. Right physical destination address s set RCR=00h to accept physical packet s set PAR0-5 to accept packet s set TCR=04h (CRC enabled) s set DCR=40h (8-bit slot) or 43h (16-bit slot) s clear ISR s tx a packet s check ISR after loopback Expected: ISR=06h (packets accepted, Rx CRC error) B. Wrong physical destination address s set RCR=00h to accept physical packet s set PAR0-5 to reject packet s set TCR=04h (CRC enabled) s set DCR=40h (8-bit slot) or 43h (16-bit slot) s clear ISR s tx a packet s check ISR after loopback Expected: ISR=02h (packets rejected, Rx no response) 8019AS.doc 2001-05-10 44 ·ç¬R¥b¾ÉÅéªÑ¥÷¦³--¤½¥q SPECIFICATION RTL8019AS (4) To Test Cable Connection q There are four physical medium types in RTL8019. s s s s s s s We perform loopback mode 3 to test the cable connection status. set RCR=00h to accept physical packet set PAR0-5 to accept packet set TCR=06h (CRC enabled) set DCR=40h (8-bit slot) or 43h (16-bit slot) clear ISR tx a packet check TSR after loopback A. 10Base2 If cable OK, get TSR=03h (Tx OK). If cable FAIL, get TSR=0Eh (Collision and Tx aborted). B. 10Base5 If cable OK, get TSR=03h (Tx OK). If MAU connected but cable FAIL, get TSR=0Eh (Tx collision and Tx aborted). If MAU not connected, get TSR=53h (Carrier sense is lost during transmission and CD heartbeat fails.). C. 10BaseT with link test disabled RTL8019AS disables link test in this case, so cable OK or FAIL doesn't affect TSR; get TSR=03h. D. Auto-detection (10BaseT with link test enabled) RTL8019AS automatically switches from 10BaseT to 10Base 2 if the twisted-pair wire is not connected (10BaseT link test fails). If twisted-pair wire OK, get TSR=03h (Tx OK) & BNC=0 in CONFIG2 If twisted-pair wire FAIL but coaxial cable OK, get TSR=03h (Tx OK) & BNC=1 in CONFIG2 Otherwise, get TSR=0Eh (same as 10Base2 connection fail). 8019AS.doc 2001-05-10 45 ·ç¬R¥b¾ÉÅéªÑ¥÷¦³--¤½¥q SPECIFICATION RTL8019AS 7. Electrical Specifications and Timings 7.1. Absolute Maximum Ratings Operating Temperature ........................................................................................... 0 to 70 Storage Temperature .............................................................................................. -65 to 140 All Outputs and Supply Voltages, with respect to Ground ........................................ -0.5V to 7V Power Dissipation .................................................................................................. Warning: Stresses beyond those listed under "Absolute Maximum Ratings" may cause permanent damage to the device. These are stress ratings only. Functionality at or above these limits is not recommended and extended exposure to "Absolute Maximum Ratings" may affect device reliability. 7.2. D.C. Characteristics (Tc=0 to 70 , Vcc=5V+5%) Symbol Vil Vih Vol1 Voh1 Vol2 Voh2 Vol3 Rpull-low II Parameter Input Low Voltage Input Low Voltage Output Low Voltage 1 Output High Voltage 1 Output Low Voltage 2 Output High Voltage 2 Output Low Voltage 3 Internal Pull-Low Resistance Input Leakage Current 50 -10 100 3.5 3.0 2.0 0.4 3.5 0.4 4.0 0.6 150 10 0.6 0.6 Min. Typ. Max. 0.8 Unit V V V V V V V KW mA Iol=16mA, Note 1 Ioh=8mA, Note 1 Iol=4mA, Note 2 Ioh=4mA, Note 2 Iol=24mA, Note 3 Conditions Note 1: Apply only to INT7 ~ INT0, SD15 ~ SD0. Note 2: Apply only to MD7 ~ MD0, MA13 ~ MA0, LED Pins, EECS, MWRB, MRDB, BCSB. Note 3: Apply only to IOCHRDY, IOCS16B 7.3. A.C. Timing Characteristics (1) ISA I/O Read/Write 8019AS.doc 2001-05-10 46 ·ç¬R¥b¾ÉÅéªÑ¥÷¦³--¤½¥q SPECIFICATION RTL8019AS AEN SA0-11 T1 IOCS16B T2 IORB, IOWB T3 IOCHRDY T4 SD0-15 (read) T7 SD0-15 (write) T5 T6 T8 Symbol T1 T2 T3 Parameter Host address valid to IOCS16B low Host address invalid to IOCS16B high IOCHRDY goes low from falling edge of IORB or IOWB when wait state insertion is needed. Read data valid from falling edge of IORB or IOWB when no wait state insertion is needed. Read data valid to IOCHRDY high when wait state is needed Read data hold after IORB rising edge Write data setup to IOWB rising edge Write data hold from IOWB rising edge Min. 8 4 -- Typ. 20 30 50 Max. 20 -50 Unit ns ns ns T4 T5 T6 T7 T8 -25 10 10 10 50 -30 10 10 60 -30 --- ns ns ns ns ns 8019AS.doc 2001-05-10 47 ·ç¬R¥b¾ÉÅéªÑ¥÷¦³--¤½¥q SPECIFICATION RTL8019AS (2) BROM Read SA19-0 SMEMRB T1 IOCHRDY T3 BA14-21 T4 T6 BCSB T7 SD7-0 T2 T5 Symbol T1 T2 T3 T4 T5 T6 T7 Parameter SMEMRB low to IOCHRDY low IOCHRDY low width SMEMRB low to BA14-21 valid SMEMRB low to BCSB valid BA14-21 hold from SMEMRB rising edge BCSB hold from SMEMRB rising edge Read data hold from SMEMRB rising edge Min. 125 - Typ. 200 - Max. 30 350 30 30 30 30 30 Unit ns ns ns ns ns ns ns 8019AS.doc 2001-05-10 48 ·ç¬R¥b¾ÉÅéªÑ¥÷¦³--¤½¥q SPECIFICATION RTL8019AS (3) Serial EEPROM (9346) Auto-load Symbol T1 T2 T3 T4 T5 T6 T7 T8 Parameter EESK high width EESK low width EEDI setup to EESK rising edge EEDI hold from EESK rising edge EECS goes high to EESK rising edge EECS goes low from EESK falling edge EEDO setup to EESK falling edge EEDO hold from EESK falling edge Min. 3.0 3.0 3.0 20 10 Typ. 3.2 3.2 0 - Max. - Unit ms ms ms ms ms ns ns ns REALTEK Semiconductor Co., Ltd. reserved all rights of this document. No part of this document may be copied or reproduced in any form or by any means or transferred to any third party without the prior written consent of REALTEK Semiconductor Co., Ltd. REALTEK reserves the right to change products or specifications without notice. This document has been carefully checked and is believed to be accurate. However REALTEK Semiconductor Co., Ltd. assumes no responsibility for inaccuracies. 8019AS.doc 2001-05-10 49 ·ç¬R¥b¾ÉÅéªÑ¥÷¦³--¤½¥q SPECIFICATION RTL8019AS Note: Symbol Dimension in Dimension in mil mm Min Typ Max Min Typ Max 106.3 118.1 129.9 2.70 3.00 3.30 4.3 20.1 35.8 0.11 0.51 0.91 102.4 112.2 122.0 2.60 2.85 3.10 7.1 11.8 16.5 0.18 0.30 0.42 1.6 5.9 10.2 0.04 0.15 0.26 541.3 551.2 561.0 13.75 14.00 14.25 777.6 787.4 797.2 19.75 20.00 20.25 19.7 25.6 31.5 0.50 0.65 0.80 726.4 740.2 753.9 18.45 18.80 19.15 962.6 976.4 990.2 24.45 24.80 25.15 39.4 47.2 55.1 1.00 1.20 1.40 88.6 94.5 104.3 2.25 2.40 2.65 3.9 0.10 0° 12° 0° 12° 1.Dimension D & E do not include interlead flash. 2.Dimension b does not include dambar protrusion/intrusion. 3.Controlling dimension: Millimeter 4.General appearance spec. should be based on final visual inspection spec. A A1 A2 b c D E e HD HE L L1 y TITLE : 100L QFP ( 14x20 mm**2 ) FOOTPRINT 4.8 mm PACKAGE OUTLINE DRAWING LEADFRAME MATERIAL: APPROVE DWG NO. REV NO. SCALE CHECK Ricardo Chen DATE SHT NO. 1 OF REALTEK SEMI-CONDUCTOR CO., LTD 8019AS.doc 2001-05-10 50