79RC32438
IDTTM InterpriseTM Integrated
Communications Processor
Features
Memory and Peripheral Device Controller
– Provides “glueless” interface to standard SRAM, Flash, ROM,
dual-port memory, and peripheral devices
– Demultiplexed address and data buses: 16-bit data bus, 26-bit
address bus, 6 chip selects, supports alternate bus masters,
control for external data bus buffers
– Supports 8-bit and 16-bit width devices
Automatic byte gathering and scattering
– Flexible protocol configuration parameters: programmable
number of wait states (0 to 63), programmable postread/postwrite delay (0 to 31), supports external wait state generation,
supports Intel and Motorola style peripherals
– Write protect capability per chip select
– Programmable bus transaction timer generates warm reset
when counter expires
– Supports up to 64 MB of memory per chip select
◆ Counter/Timers
– Three general purpose 32-bit counter timers
◆
PCI Interface
– 32-bit PCI revision 2.2 compliant (3.3V only)
– Supports host or satellite operation in both master and target
modes
– Support for synchronous and asynchronous operation
– PCI clock supports frequencies from 16 MHz to 66 MHz
– PCI arbiter in Host mode: supports 6 external masters, fixed
priority or round robin arbitration
– I2O “like” PCI Messaging Unit
◆
32-bit CPU Core
– MIPS32 instruction set
– Cache Sizes: 16KB instruction and data caches, 4-Way set
associative, cache line locking, non-blocking prefetches
– 16 dual-entry JTLB with variable page sizes
– 3-entry instruction TLB
– 3-entry data TLB
– Max issue rate of one 32x16 multiply per clock
– Max issue rate of one 32x32 multiply every other clock
– CPU control with start, stop and single stepping
– Software breakpoints support
– Hardware breakpoints on virtual addresses
– Enhanced JTAG and ICE Interface that is compatible with v2.5
of the EJTAG Specification
◆ DDR Memory Controller
– Supports up to 2GB of DDR SDRAM
– 2 chip selects (each chip select supports 4 internal DDR
banks)
– Supports 16-bit or 32-bit data bus width using 8, 16, or 32-bit
devices
– Supports 64Mb, 128Mb, 256Mb, 512Mb, and 1Gb DDR
SDRAM devices
– Data bus multiplexing support allows interfacing to standard
DDR DIMMs and SODIMMs
– Automatic refresh generation
◆
Block Diagram
MII
MIPS-32
CPU Core
ICE
Interrupt
Controller
EJTAG
MMU
D. Cache
I. Cache
DDR
:
:
2 Ethernet
10/100
Interfaces
3 Counter
Timers
On-Chip
Memory
DMA
Controller
IPBusTM
DDR &
Device
Controllers
Memory &
Peripheral Bus
MII
I2C
Controller
2 UARTS
I2C Bus
Ch. 1 Ch. 2
Serial Channels
(16550)
GPIO
Interface
GPIO Pins
Arbiter
SPI
Controller
SPI Bus
PCI
Master/Target
Interface
PCI Arbiter
(Host Mode)
PCI Bus
IDT and the IDT logo are trademarks of Integrated Device Technology, Inc.
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IDT 79RC32438
DMA Controller
– 10 DMA channels: two channels for PCI (PCI to Memory and
Memory to PCI), two for each Ethernet interface, two channels
for memory to memory operations, two channels for external
operations
– Provides flexible descriptor based operation
– Supports unaligned transfers (i.e., source or destination
address may be on any byte boundary) with arbitrary byte
length.
◆ Two Ethernet Interfaces
– 10 and 100 Mb/s ISO/IEC 8802-3:1996 compliant
– Two IEEE 802.3u compatible Media Independent Interfaces
(MII) with serial management interface
– MII supports IEEE 802.3u auto-negotiation speed selection
– Supports 64 entry hash table based multicast address filtering
– 512 byte transmit and receive FIFOs
– Supports flow control functions outlined in IEEE Std. 802.3x1997
◆
Universal Asynchronous Receiver Transmitter (UART)
– Compatible with the 16550 and 16450 UARTs
– Two completely separate serial channels
– Modem control functions (CTS, RTS, DSR, DTR, RI, DCD)
– 16-byte transmit and receive buffers
– Programmable baud rate generator derived from the system
clock
– Fully programmable serial characteristics:
– 5, 6, 7, or 8 bit characters
– Even, odd or no parity bit generation and detection
– 1, 1-1/2 or 2 stop bit generation
– Line break generation and detection
– False start bit detection
– Internal loopback mode
◆ 2
I C-Bus
– Supports standard 100 Kbps mode as well as 400 Kbps fast
mode
– Supports 7-bit and 10-bit addressing
– Supports four modes: master transmitter, master receiver,
slave transmitter, slave receiver
◆
Additional General Purpose Peripherals
– Two 16550-compatible serial ports
– Interrupt controller
– System integrity functions
– General purpose I/O controller
– Serial peripheral interface (SPI)
◆
On-chip Memory
– 4KB of high speed SRAM organized as 1K x 32 bits
– Supports burst and non-burst byte, halfword, triple-byte, and
word CPU, PCI, and DMA accesses
◆
Debug Support
– Rev. 2.6 compliant EJTAG Interface
◆
Device Overview
The RC32438 is a member of the IDT™ Interprise™ family of PCI
integrated communications processors. It incorporates a high performance CPU core and a number of on-chip peripherals. The integrated
processor is designed to transfer information from I/O modules to main
memory with minimal CPU intervention using a highly sophisticated
direct memory access (DMA) engine. All data transfers through the
RC32438 are achieved by writing data from an on-chip I/O peripheral to
main memory and then out to another I/O module.
CPU Execution Core
The 32-bit CPU core is 100% compatible with the MIPS32 instruction
set architecture (ISA).
Specifically, this device features the 4Kc CPU core developed by
MIPS Technologies Inc. (www.mips.com). This core issues a single
instruction per cycle, includes a five stage pipeline, and is optimized for
applications that require integer arithmetic. The CPU core includes 16
KB instruction and 16 KB data caches. Both caches are 4-way set associative and can be locked on a per line basis, which allows the
programmer control over this precious on-chip memory resource. The
core also features a memory management unit (MMU). The CPU core
also incorporates an enhanced joint test access group (EJTAG) interface that is used to interface to in-circuit emulator tools, providing
access to internal registers and enabling the part to be controlled externally, simplifying the system debug process. The use of this core allows
IDT's customers to leverage the broad range of software and development tools available for the MIPS architecture, including operating
systems, compilers, and in-circuit emulators.
Double Data Rate Memory Controller
The RC32438 incorporates a high performance double data rate
(DDR) memory controller which supports both x16 and x32 memory
configurations up to 2GB. This module provides all of the signals
required to interface to both memory modules and discrete devices,
including two chip selects, differential clocking outputs and data strobes.
Memory and I/O Controller
The RC32438 uses a dedicated local memory/IO controller including
a de-multiplexed 16-bit data and 26-bit address bus. It includes all of the
signals required to interface directly to as many as six Intel or Motorolastyle external peripherals, and the interface can be configured to
support both 8-bit and 16-bit peripherals.
DMA Controller
The DMA controller consists of 10 independent DMA channels, all of
which operate in exactly the same manner. The DMA controller off-loads
the CPU core from moving data among the on-chip interfaces, external
peripherals, and memory. The controller supports scatter/gather DMA
with no alignment restrictions, appropriate for communications and
graphics systems.
PCI Interface
The PCI interface on the RC32438 is compatible with version 2.2 of
the PCI specification. An on-chip arbiter supports up to six external bus
masters, supporting both fixed priority and rotating priority arbitration
schemes. The part can support both satellite and host PCI configurations, enabling the RC32438 to act as a slave controller for a PCI add-in
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IDT 79RC32438
card application, or as the primary PCI controller in the system. The PCI
interface can be operated synchronously or asynchronously to the other
I/O interfaces on the RC32438 device.
Ethernet Interface
The RC32438 has two Ethernet Channels supporting 10Mbps and
100Mbps speeds to provide a standard media independent interface
(MII) off-chip, allowing a wide range of external devices to be connected
efficiently.
UART Interface
The RC32438 contains two completely separate serial channels
(UARTs) that are compatible with the industry standard 16550 UART.
System Integrity Functions
The RC32438 contains a programmable watchdog timer that generates NMI when the counter expires and an address space monitor that
reports errors in response to accesses to undecoded address regions.
General Purpose I/O Controller
February 4, 2003: Revised description for EJTAG/JTAG pins in
Table 1. Changed DDRDM[7:0] from input/output to output only in Tables
1 and 2 and Logic Diagram. Added new section, Voltage Sense Signal
Timing, as part of EJTAG description.
March 4, 2003: In Table 2, removed “pull-up” from PCI pin category
and from GPIO [24] and GPIO[30-26]. In Table 20, changed max. values
for VccSI/O, VccCore, and VccPLL.
July 9, 2003: In Table 7: changed values for DDRDATA, DDRDM,
and DDRADDR—WEN signals, and deleted old footnote #3 and
changed values in new footnote #3. In Table 8, changed Tdo values.
Changed Figure 7. Changed values in Table 18, Power Consumption.
Removed IPBus Monitor feature which included changes to Tables 1, 2,
21, 24, and 25. Deleted Table 13 which resulted in a re-ordering of
subsequent tables.
March 8, 2004: Added 300MHz speed grade.
May 25, 2004: In Table 9, signals MIIxRXCLK and MIIxTXCLK, the
Min and Max values for Thigh/Tlow_9c were changed to 140 and 260
respectively and the Min and Max values for Thigh/Tlow_9d were
changed to 14.0 and 26.0 respectively.
The RC32438 contains 32 general purpose input/output pins. Each
pin may be used as an active high or active low level interrupt or nonmaskable interrupt input, and each signal may be used as a bit input or
output port.
I2C Interface
The standard I2C interface allows the RC32438 to connect to a
number of standard external peripherals for a more complete system
solution. The RC32438 supports both master and slave operations.
Debug Support
The RC32438 supports the industry standard Rev. 2.6 EJTAG interface.
Thermal Considerations
The RC32438 consumes less than 2.7 W peak power. It is guaranteed in a ambient temperature range of 0° to +70° C for commercial
temperature devices and - 40° to +85° for industrial temperature
devices.
Revision History
November 7, 2002: Initial publication. Preliminary Information.
November 15, 2002: Added footnotes to Tables 5, 9, and 10.
December 12, 2002: Added Clock Speed parameter to PLL and
Core supply in Table 16.
December 19, 2002: Release version.
January 13, 2003: Changed Thermal Considerations to read less
than 2.7W instead of 2.5W, added values to CLK parameter in Table 5,
and revised EJTAG description.
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Pin Description Table
The following table lists the functions of the pins provided on the RC32438. Some of the functions listed may be multiplexed onto the same pin.
The active polarity of a signal is defined using a suffix. Signals ending with an “N” are defined as being active, or asserted, when at a logic zero
(low) level. All other signals (including clocks, buses and select lines) will be interpreted as being active, or asserted when at a logic one (high) level.
Signal
Type
Name/Description
CLK
I
Master Clock. This is the master clock input. The processor frequency is a multiple of this clock frequency. This clock is used as the system clock for all memory and peripheral bus operations.
EXTCLK
O
External Clock. This clock is used for all memory and peripheral bus operations.
COLDRSTN
I
Cold Reset. The assertion of this signal initiates a cold reset. This causes the
processor state to be initialized, boot configuration to be loaded, and the internal
PLL to lock onto the master clock (CLK).
I/O
Reset. The assertion of this bidirectional signal initiates a warm reset. This signal is asserted by the RC32438 during a warm reset.
System
RSTN
Memory and Peripheral Bus
BDIRN
O
External Buffer Direction. Memory and peripheral bus external data bus buffer
direction control. If the RC32438 memory and peripheral bus is connected to the
A side of a transceiver, such as an IDT74FCT245, then this pin may be directly
connected to the direction control (e.g., BDIR) pin of the transceiver.
BGN
O
Bus Grant. This signal is asserted by the RC32438 to indicate that the
RC32438 has relinquished ownership of the memory and peripheral bus.
BOEN
O
External Buffer Enable. This signal provides an output enable control for an
external buffer on the memory and peripheral data bus.
BRN
I
Bus Request. This signal is asserted by an external device to request ownership of the memory and peripheral bus.
BWEN[1:0]
O
Byte Write Enables. These signals are memory and peripheral bus byte write
enable signals.
BWEN[0] corresponds to byte lane MDATA[7:0]
BWEN[1] corresponds to byte lane MDATA[15:8]
CSN[5:0]
O
Chip Selects. These signals are used to select an external device on the memory and peripheral bus.
MADDR[21:0]
O
Address Bus. 22-bit memory and peripheral bus address bus.
MADDR[25:22] are available as GPIO alternate functions
MDATA[15:0]
I/O
Data Bus. 16-bit memory and peripheral data bus. During a cold reset, these
pins function as inputs that are used to load the boot configuration vector.
OEN
O
Output Enable. This signal is asserted when data should be driven on by an
external device on the memory and peripheral bus.
RWN
O
Read Write. This signal indicates if the transaction on the memory and peripheral bus is a read transaction or a write transaction. A high level indicates a read
from an external device. A low level indicates a write to an external device.
Table 1 Pin Description (Part 1 of 9)
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IDT 79RC32438
Signal
Type
Name/Description
I
Wait or Transfer Acknowledge. When configured as wait, this signal is
asserted during a memory and peripheral bus transaction to extend the bus
cycle. When configured as a transfer acknowledge, this signal is asserted during
a transaction to signal the completion of the transaction.
DDRADDR[13:0]
O
DDR Address Bus. 14-bit multiplexed DDR bus address bus. This bus is used
to transfer the addresses to the DDR devices.
DDRBA[1:0]
O
DDR Bank Address. These signals are used to transfer the bank address to the
DDRs.
DDRCASN
O
DDR Column Address Strobe. This signal is asserted during DDR transactions.
DDRCKE
O
DDR Clock Enable. The DDR clock enable is asserted during normal DDR
operation. This signal is negated during following a cold reset or during a power
down operation.
DDRCKN[1:0]
O
DDR Negative DDR clock. These signals are the negative clock of the differential DDR clock pair. Two copies of this output are provided to reduce signal loading.
DDRCKP[1:0]
O
DDR Positive DDR clock. These signals are the positive clock of the differential DDR clock pair. Two copies of this output are provided to reduce signal loading.
DDRCSN[1:0]
O
DDR Chip Selects. These active low signals are used to select DDR device(s)
on the DDR bus.
DDRDATA[31:0]
I/O
DDR Data Bus. 32-bit DDR data bus used to transfer data between the
RC32438 and the DDR devices. Data is transferred on both edges of the clock.
DDRDM[7:0]
O
DDR Data Write Enables. Byte data write enables used to enable specific byte
lanes during DDR writes.
DDRDM[0] corresponds to DDRDATA[7:0]
DDRDM[1] corresponds to DDRDATA[15:8]
DDRDM[2] corresponds to DDRDATA[23:16]
DDRDM[3] corresponds to DDRDATA[31:24]
DDRDM[4] corresponds to DDRDATA[39:32]
DDRDM[5] corresponds to DDRDATA[47:40]
DDRDM[6] corresponds to DDRDATA[55:48]
DDRDM[7] corresponds to DDRDATA[54:56]
(Refer to the DDR Data Bus Multiplexing section in Chapter 7 of the RC32438
User Reference Manual.)
DDRDQS[3:0]
I/O
DDR Data Strobes. DDR byte data strobes used to clock data between DDR
devices and the RC32438. These strobes are inputs during DDR reads and outputs during DDR writes.
DDRDQS[0] corresponds to DDRDATA[7:0].
DDRDQS[1] corresponds to DDRDATA[15:8].
DDRDQS[2] corresponds to DDRDATA[23:16].
DDRDQS[3] corresponds to DDRDATA[31:24].
DDROEN[3:0]
O
DDR Bus Switch Output Enables. These pins are used to enable external
data bus switches in systems that support data bus multiplexing.
DDRRASN
O
DDR Row Address Strobe. The DDR row address strobe is asserted during
DDR transactions.
WAITACKN
DDR Bus
Table 1 Pin Description (Part 2 of 9)
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IDT 79RC32438
Signal
Type
Name/Description
DDRVREF
I
DDR Voltage Reference. SSTL_2 DDR voltage reference generated by an
external source.
DDRWEN
O
DDR Write Enable. DDR write enable is asserted during DDR write transactions.
PCIAD[31:0]
I/O
PCI Multiplexed Address/Data Bus. Address is driven by a bus master during
initial PCIFRAMEN assertion. Data is then driven by the bus master during
writes or by the bus target during reads.
PCICBEN[3:0]
I/O
PCI Multiplexed Command/Byte Enable Bus. PCI command is driven by the
bus master during the initial PCIFRAMEN assertion. Byte enable signals are
driven by the bus master during subsequent data phase(s).
PCI Bus
PCICLK
I
PCI Clock. Clock used for all PCI bus transactions.
PCIDEVSELN
I/O
PCI Device Select. This signal is driven by a bus target to indicate that the target has decoded the address as one of its own address spaces.
PCIFRAMEN
I/O
PCI Frame. Driven by a bus master. Assertion indicates the beginning of a bus
transaction. Negation indicates the last data.
PCIGNTN[3:0]
I/O
PCI Bus Grant.
In PCI host mode with internal arbiter:
The assertion of these signals indicates to the agent that the internal RC32438
arbiter has granted the agent access to the PCI bus.
In PCI host mode with external arbiter:
PCIGNTN[0]: asserted by an external arbiter to indicate to the RC32438 that
access to the PCI bus has been granted.
PCIGNTN[3:1]: unused and driven high.
In PCI satellite mode:
PCIGNTN[0]: This signal is asserted by an external arbiter to indicate to the
RC32438 that access to the PCI bus has been granted.
PCIGNTN[1]: this signal takes on the alternate function of PCIEECS and is used
as a PCI Serial EEPROM chip select
PCIGNTN[3:2]: unused and driven high.
Note: When the GPIO register is programmed in the alternate function mode for
bits GPIO [26] and [28], these bits become PCIGNTN [4] and [5] respectively.
PCIIRDYN
I/O
PCI Initiator Ready. Driven by the bus master to indicate that the current datum
can complete.
PCILOCKN
I/O
PCI Lock. This signal is asserted by an external bus master to indicate that an
exclusive operation is occurring.
PCIPAR
I/O
PCI Parity. Even parity of the PCIAD[31:0] bus. Driven by the bus master during
address and write Data phases. Driven by the bus target during the read data
phase.
PCIPERRN
I/O
PCI Parity Error. If a parity error is detected, this signal is asserted by the
receiving bus agent 2 clocks after the data is received.
Table 1 Pin Description (Part 3 of 9)
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Signal
Type
Name/Description
PCIREQN[3:0]
I/O
PCI Bus Request.
In PCI host mode with internal arbiter:
These signals are inputs whose assertion indicates to the internal RC32438
arbiter that an agent desires ownership of the PCI bus.
In PCI host mode with external arbiter:
PCIREQN[0]: asserted by the RC32438 to request ownership of the PCI bus.
PCIREQN[3:1]: unused and driven high.
In PCI satellite mode:
PCIREQN[0]: this signal is asserted by the RC32438 to request use of the PCI
bus.
PCIREQN[1]: function changes to PCIIDSEL and is used as a chip select during
configuration read and write transactions.
PCIREQN[3:2]: unused and driven high.
Note: When the GPIO register is programmed in the alternate function mode for
bits GPIO [24] and [27], these bits become PCIREQN [4] and [5] respectively.
PCIRSTN
I/O
PCI Reset. In host mode, this signal is asserted by the RC32438 to generate a
PCI reset. In satellite mode, assertion of this signal initiates a warm reset.
PCISERRN
I/O
PCI System Error. This signal is driven by an agent to indicate an address parity error, data parity error during a special cycle command, or any other system
error. Requires an external pull-up.
PCISTOPN
I/O
PCI Stop. Driven by the bus target to terminate the current bus transaction. For
example, to indicate a retry.
PCITRDYN
I/O
PCI Target Ready. Driven by the bus target to indicate that the current data can
complete.
General Purpose Input/Output
GPIO[0]
I/O
General Purpose I/O.
This pin can be configured as a general purpose I/O pin.
Alternate function pin name: U0SOUT
Alternate function: UART channel 0 serial output.
GPIO[1]
I/O
General Purpose I/O.
This pin can be configured as a general purpose I/O pin.
Alternate function pin name: U0SINP
Alternate function: UART channel 0 serial input.
GPIO[2]
I/O
General Purpose I/O.
This pin can be configured as a general purpose I/O pin.
Alternate function pin name: U0RIN
Alternate function: UART channel 0 ring indicator input.
GPIO[3]
I/O
General Purpose I/O.
This pin can be configured as a general purpose I/O pin.
Alternate function pin name: U0DCDN
Alternate function: UART channel 0 data carrier detect input.
GPIO[4]
I/O
General Purpose I/O.
This pin can be configured as a general purpose I/O pin.
Alternate function pin name: U0DTRN
Alternate function: UART channel 0 data terminal ready input.
GPIO[5]
I/O
General Purpose I/O.
This pin can be configured as a general purpose I/O pin.
Alternate function pin name: U0DSRN
Alternate function: UART channel 0 data set ready input.
Table 1 Pin Description (Part 4 of 9)
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Signal
Type
Name/Description
GPIO[6]
I/O
General Purpose I/O.
This pin can be configured as a general purpose I/O pin.
Alternate function pin name: U0RTSN
Alternate function: UART channel 0 request to send output.
GPIO[7]
I/O
General Purpose I/O.
This pin can be configured as a general purpose I/O pin.
Alternate function pin name: U0CTSN
Alternate function: UART channel 0 clear to send input.
GPIO[8]
I/O
General Purpose I/O.
This pin can be configured as a general purpose I/O pin.
Alternate function pin name: U1SOUT
Alternate function: UART channel 1 serial output.
GPIO[9]
I/O
General Purpose I/O.
This pin can be configured as a general purpose I/O pin.
Alternate function pin name: U1SINP
Alternate function: UART channel 1 serial input.
GPIO[10]
I/O
General Purpose I/O.
This pin can be configured as a general purpose I/O pin.
Alternate function pin name: U1DTRN
Alternate function: UART channel 1 data terminal ready output.
GPIO[11]
I/O
General Purpose I/O.
This pin can be configured as a general purpose I/O pin.
Alternate function pin name: U1DSRN
Alternate function: UART channel 1 data set ready input.
GPIO[12]
I/O
General Purpose I/O.
This pin can be configured as a general purpose I/O pin.
Alternate function pin name: U1RTSN
Alternate function: UART channel 1 request to send output.
GPIO[13]
I/O
General Purpose I/O.
This pin can be configured as a general purpose I/O pin.
Alternate function pin name: U1CTSN
Alternate function: UART channel 1 clear to send input.
GPIO[14]
I/O
General Purpose I/O.
This pin can be configured as a general purpose I/O pin.
Alternate function pin name: DMAREQN0
Alternate function: External DMA channel 0 request input.
GPIO[15]
I/O
General Purpose I/O.
This pin can be configured as a general purpose I/O pin.
Alternate function pin name: DMAREQN1
Alternate function: External DMA channel 1 request input.
GPIO[16]
I/O
General Purpose I/O.
This pin can be configured as a general purpose I/O pin.
Alternate function pin name: DMADONEN0
Alternate function: External DMA channel 0 done input.
GPIO[17]
I/O
General Purpose I/O.
This pin can be configured as a general purpose I/O pin.
Alternate function pin name: DMADONEN1
Alternate function: External DMA channel 1 done input.
Table 1 Pin Description (Part 5 of 9)
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IDT 79RC32438
Signal
Type
Name/Description
GPIO[18]
I/O
General Purpose I/O.
This pin can be configured as a general purpose I/O pin.
Alternate function pin name: DMAFINN0
Alternate function: External DMA channel 0 finished output.
GPIO[19]
I/O
General Purpose I/O.
This pin can be configured as a general purpose I/O pin.
Alternate function pin name: DMAFINN1
Alternate function: External DMA channel 1 finished output.
GPIO[20]
I/O
General Purpose I/O.
This pin can be configured as a general purpose I/O pin
Alternate function pin name: MADDR[22]
Alternate function: Memory and peripheral bus address output.
GPIO[21]
I/O
General Purpose I/O.
This pin can be configured as a general purpose I/O pin.
Alternate function pin name: MADDR[23]
Alternate function: Memory and peripheral bus address output.
GPIO[22]
I/O
General Purpose I/O.
This pin can be configured as a general purpose I/O pin.
Alternate function pin name: MADDR[24]
Alternate function: Memory and peripheral bus address output.
GPIO[23]
I/O
General Purpose I/O.
This pin can be configured as a general purpose I/O pin.
Alternate function pin name: MADDR[25]
Alternate function: Memory and peripheral bus address output.
GPIO[24]
I/O
General Purpose I/O.
This pin can be configured as a general purpose I/O pin.
Alternate function pin name: PCIREQN[4]
Alternate function: PCI Request 4 input or output.
GPIO[25]
I/O
General Purpose I/O.
This pin can be configured as a general purpose I/O pin.
Alternate function pin name: AFSPARE1
Alternate function: reserved.
GPIO[26]
I/O
General Purpose I/O.
This pin can be configured as a general purpose I/O pin.
Alternate function pin name: PCIGNTN[4]
Alternate function: PCI Grant 4 output.
GPIO[27]
I/O
General Purpose I/O.
This pin can be configured as a general purpose I/O pin.
Alternate function pin name: PCIREQN[5]
Alternate function: PCI Request 5 input or output.
GPIO[28]
I/O
General Purpose I/O.
This pin can be configured as a general purpose I/O pin.
Alternate function pin name: PCIGNTN[5]
Alternate function: PCI Grant 5 output.
GPIO[29]
I/O
General Purpose I/O.
This pin can be configured as a general purpose I/O pin.
Alternate function pin name: Reserved
Alternate function: Reserved.
Table 1 Pin Description (Part 6 of 9)
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IDT 79RC32438
Signal
Type
Name/Description
GPIO[30]
I/O
General Purpose I/O.
This pin can be configured as a general purpose I/O pin.
Alternate function pin name: PCIMUINTN
Alternate function: PCI Messaging unit interrupt output.
GPIO[31]
I/O
General Purpose I/O.
This pin can be configured as a general purpose I/O pin.
SCK
I/O
Serial Clock. This signal is used as the serial clock output in SPI mode and in
PCI satellite mode with suspended CPU execution during PCI serial EEPROM
loading. This pin may be configured as a GPIO pin.
SDI
I/O
Serial Data Input. This signal is used to shift in serial data in SPI mode and in
PCI satellite mode with suspended CPU execution during PCI serial EEPROM
loading. This pin may be configured as a GPIO pin.
SDO
I/O
Serial Data Output. This signal is used shift out serial data in SPI mode and in
PCI satellite mode with suspended CPU execution during PCI serial EEPROM
loading. This pin may be configured as a GPIO pin.
SCL
I/O
I2C Clock. I2C-bus clock.
SDA
I/O
I2C Data Bus. I2C-bus data bus.
SPI Interface
I2C Bus Interface
Ethernet Interfaces
MII0CL
I
Ethernet 0 MII Collision Detected. This signal is asserted by the ethernet PHY
when a collision is detected.
MII0CRS
I
Ethernet 0 MII Carrier Sense. This signal is asserted by the ethernet PHY
when either the transmit or receive medium is not idle.
MII0RXCLK
I
Ethernet 0 MII Receive Clock. This clock is a continuous clock that provides a
timing reference for the reception of data.
MII0RXD[3:0]
I
Ethernet 0 MII Receive Data. This nibble wide data bus contains the data
received by the ethernet PHY.
MII0RXDV
I
Ethernet 0 MII Receive Data Valid. The assertion of this signal indicates that
valid receive data is in the MII receive data bus.
MII0RXER
I
Ethernet 0 MII Receive Error. The assertion of this signal indicates that an
error was detected somewhere in the ethernet frame currently being sent in the
MII receive data bus.
MII0TXCLK
I
Ethernet 0 MII Transmit Clock. This clock is a continuous clock that provides a
timing reference for the transfer of transmit data.
MII0TXD[3:0]
O
Ethernet 0 MII Transmit Data. This nibble wide data bus contains the data to
be transmitted.
MII0TXENP
O
Ethernet 0 MII Transmit Enable. The assertion of this signal indicates that data
is present on the MII for transmission.
MII0TXER
O
Ethernet 0 MII Transmit Coding Error. When this signal is asserted together
with MIITXENP, the ethernet PHY will transmit symbols which are not valid data
or delimiters.
MII1CL
I
Ethernet 1 MII Collision Detected. This signal is asserted by the ethernet PHY
when a collision is detected.
Table 1 Pin Description (Part 7 of 9)
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Signal
Type
Name/Description
MII1CRS
I
Ethernet 1 MII Carrier Sense. This signal is asserted by the ethernet PHY
when either the transmit or receive medium is not idle.
MII1RXCLK
I
Ethernet 1 MII Receive Clock. This clock is a continuous clock that provides a
timing reference for the reception of data.
MII1RXD[3:0]
I
Ethernet 1 MII Receive Data. This nibble wide data bus contains the data
received by the ethernet PHY.
MII1RXDV
I
Ethernet 1 MII Receive Data Valid. The assertion of this signal indicates that
valid receive data is in the MII receive data bus.
MII1RXER
I
Ethernet 1 MII Receive Error. The assertion of this signal indicates that an
error was detected somewhere in the ethernet frame currently being sent in the
MII receive data bus.
MII1TXCLK
I
Ethernet 1 MII Transmit Clock. This clock is a continuous clock that provides a
timing reference for the transfer of transmit data.
MII1TXD[3:0]
O
Ethernet 1 MII Transmit Data. This nibble wide data bus contains the data to
be transmitted.
MII1TXENP
O
Ethernet 1 MII Transmit Enable. The assertion of this signal indicates that data
is present on the MII for transmission.
MII1TXER
O
Ethernet 1 MII Transmit Coding Error. When this signal is asserted together
with MIITXENP, the ethernet PHY will transmit symbols which are not valid data
or delimiters.
MIIMDC
O
MII Management Data Clock. This signal is used as a timing reference for
transmission of data on the management interface.
MIIMDIO
I/O
MII Management Data. This bidirectional signal is used to transfer data
between the station management entity and the ethernet PHY.
JTAG / EJTAG
EJTAG_TMS
I
EJTAG Mode. The value on this signal controls the test mode select of the
EJTAG Controller. When using the JTAG boundary scan, this pin should be left
disconnected (since there is an internal pull-up) or driven high.
JTAG_TCK
I
JTAG Clock. This is an input test clock used to clock the shifting of data into or
out of the boundary scan logic, JTAG Controller, or the EJTAG Controller.
JTAG_TCK is independent of the system and the processor clock with a nominal 50% duty cycle.
JTAG_TDI
I
JTAG Data Input. This is the serial data input to the boundary scan logic, JTAG
Controller, or the EJTAG Controller.
JTAG_TDO
O
JTAG Data Output. This is the serial data shifted out from the boundary scan
logic, JTAG Controller, or the EJTAG Controller. When no data is being shifted
out, this signal is tri-stated.
JTAG_TMS
I
JTAG Mode. The value on this signal controls the test mode select of the
boundary scan logic or JTAG Controller. When using the EJTAG debug interface, this pin should be left disconnected (since there is an internal pull-up) or
driven high.
Table 1 Pin Description (Part 8 of 9)
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Signal
Type
Name/Description
I
JTAG Reset. This active low signal asynchronously resets the boundary scan
logic, JTAG TAP Controller, and the EJTAG Debug TAP Controller. An external
pull-up on the board is recommended to meet the JTAG specification in cases
where the tester can access this signal. However, for systems running in functional mode, one of the following should occur:
1) actively drive this signal low with control logic
2) statically drive this signal low with an external pull-down on the board
3) clock JTAG_TCK while holding EJTAG_TMS and/or JTAG_TMS high.
CPU
O
CPU Transaction. This signal is asserted during all CPU instruction fetches and
data transfers to/from the DDR and devices on the memory and peripheral bus.
The signal is negated during PCI and DMA transactions to/from the DDR and
devices on the memory and peripheral bus.
INST
O
Instruction or Data. This signal is driven high during CPU instruction fetches on
the memory and peripheral bus memory or DDR bus.
JTAG_TRST_N
Debug
Table 1 Pin Description (Part 9 of 9)
Pin Characteristics
Note: Some input pads of the RC32438 do not contain internal pull-ups or pull-downs. Unused inputs should be tied off to appropriate
levels. This is especially critical for unused control signal inputs (such as BRN) which, if left floating, could adversely affect the RC32438’s
operation. Also, any input pin left floating can cause a slight increase in power consumption.
Function
Memory and
Peripheral Bus
Pin Name
Type
Buffer
I/O Type
BDIRN
O
LVTTL
High Drive
BGN
O
LVTTL
Low Drive
BOEN
O
LVTTL
High Drive
BRN
I
LVTTL
STI2
BWEN[1:0]
O
LVTTL
High Drive
CSN[5:0]
O
LVTTL
High Drive
MADDR[21:0]
O
LVTTL
High Drive
MDATA[15:0]
I/O
LVTTL
High Drive
OEN
O
LVTTL
High Drive
RWN
O
LVTTL
High Drive
WAITACKN
I
LVTTL
STI
Internal
Resistor
Notes1
pull-up
pull-up
Table 2 Pin Characteristics (Part 1 of 4)
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Function
DDR Bus
PCI Bus Interface3
Notes1
Type
Buffer
I/O Type
DDRADDR[13:0]
O
SSTL_2
SSTL_2
DDRBA[1:0]
O
SSTL_2
SSTL_2
DDRCASN
O
SSTL_2
SSTL_2
DDRCKE
O
SSTL_2 /
LVCMOS
SSTL_2
DDRCKN[1:0]
O
SSTL_2
SSTL_2
DDRCKP[1:0]
O
SSTL_2
SSTL_2
DDRCSN[1:0]
O
SSTL_2
SSTL_2
DDRDATA[31:0]
I/O
SSTL_2
SSTL_2
DDRDM[7:0]
O
SSTL_2
SSTL_2
DDRDQS[3:0]
I/O
SSTL_2
SSTL_2
DDROEN[3:0]
O
SSTL_2
SSTL_2
DDRRASN
O
SSTL_2
SSTL_2
DDRVREF
I
Analog
SSTL_2
DDRWEN
O
SSTL_2
SSTL_2
PCIAD[31:0]
I/O
PCI
PCI
PCICBEN[3:0]
I/O
PCI
PCI
I
PCI
PCI
PCIDEVSELN
I/O
PCI
PCI
pull-up on board
PCIFRAMEN
I/O
PCI
PCI
pull-up on board
PCIGNTN[3:0]
I/O
PCI
PCI
pull-up on board
PCIIRDYN
I/O
PCI
PCI
pull-up on board
PCILOCKN
I/O
PCI
PCI
PCIPAR
I/O
PCI
PCI
PCIPERRN
I/O
PCI
PCI
PCIREQN[3:0]
I/O
PCI
PCI
pull-up on board
PCIRSTN
I/O
PCI
PCI
pull-down on board
PCISERRN
I/O
PCI
Open Collector; PCI
pull-up on board
PCISTOPN
I/O
PCI
PCI
pull-up on board
PCITRDYN
I/O
PCI
PCI
pull-up on board
GPIO[23:0]
I/O
LVTTL
Low Drive
GPIO[24]
I/O
PCI
GPIO[25]
I/O
LVTTL
GPIO[30:26]4
I/O
PCI
GPIO[31]
I/O
LVTTL
PCICLK
General Purpose
I/O
Internal
Resistor
Pin Name
pull-up
pull-up on board
Low Drive
pull-up
pull-up on board
Low Drive
pull-up
Table 2 Pin Characteristics (Part 2 of 4)
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Function
Serial Interface
I2C-Bus Interface
Ethernet Interfaces
EJTAG / ICE
Debug
Type
Buffer
I/O Type
Internal
Resistor
SCK
I/O
LVTTL
Low Drive
pull-up
pull-up on board
SDI
I/O
LVTTL
Low Drive
pull-up
pull-up on board
SDO
I/O
LVTTL
Low Drive
pull-up
pull-up on board
SCL
I/O
LVTTL
Low Drive/STI
pull-up on board5
SDA
I/O
LVTTL
Low Drive/STI
pull-up on board5
MII0CL
I
LVTTL
STI
pull-down
MII0CRS
I
LVTTL
STI
pull-down
MII0RXCLK
I
LVTTL
STI
pull-up
MII0RXD[3:0]
I
LVTTL
STI
pull-up
MII0RXDV
I
LVTTL
STI
pull-down
MII0RXER
I
LVTTL
STI
pull-down
MII0TXCLK
I
LVTTL
STI
pull-up
MII0TXD[3:0]
O
LVTTL
Low Drive
MII0TXENP
O
LVTTL
Low Drive
MII0TXER
O
LVTTL
Low Drive
MII1CL
I
LVTTL
STI
pull-down
MII1CRS
I
LVTTL
STI
pull-down
MII1RXCLK
I
LVTTL
STI
pull-up
MII1RXD[3:0]
I
LVTTL
STI
pull-up
MII1RXDV
I
LVTTL
STI
pull-down
MII1RXER
I
LVTTL
STI
pull-down
MII1TXCLK
I
LVTTL
STI
pull-up
MII1TXD[3:0]
O
LVTTL
Low Drive
MII1TXENP
O
LVTTL
Low Drive
MII1TXER
O
LVTTL
Low Drive
MIIMDC
O
LVTTL
Low Drive
MIIMDIO
I/O
LVTTL
Low Drive
pull-up
JTAG_TRST_N
I
LVTTL
STI
pull-up
JTAG_TCK
I
LVTTL
STI
pull-up
JTAG_TDI
I
LVTTL
STI
pull-up
JTAG_TDO
O
LVTTL
Low Drive
JTAG_TMS
I
LVTTL
STI
pull-up
EJTAG_TMS
I
LVTTL
STI
pull-up
CPU
O
LVTTL
Low Drive
INST
O
LVTTL
Low Drive
Pin Name
Notes1
Table 2 Pin Characteristics (Part 3 of 4)
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Function
Miscellaneous
Pin Name
Type
Buffer
I/O Type
CLK
I
LVTTL
STI
EXTCLK
O
LVTTL
High Drive
COLDRSTN
I
LVTTL
STI
I/O
LVTTL
Low Drive / STI
RSTN
Internal
Resistor
pull-up
Notes1
pull-up on board
Table 2 Pin Characteristics (Part 4 of 4)
1.
External pull-up required in most system applications. Some applications may require additional pull-ups not identified in this table.
2.
Schmidt Trigger Input (STI).
3. The
PCI pins have internal pull-ups but they are too weak to guarantee system validity. Therefore, board pull-ups are mandatory
where indicated. GPIO alternate function pins for PCI must also have board pull-ups.
4.
PCIMUINTN is an alternate function of GPIO[30]. When configured as an alternate function, this pin is tri-stated when not asserted
(i.e., it acts as an open collector output).
5.
Use a 2.2K pull-up resistor for I2C pins.
Boot Configuration Vector
The boot configuration vector is read by the RC32438 during a cold reset. The vector defines essential RC32438 parameters that are required
once the cold reset completes.
The encoding of the boot configuration vector is described in Table 3, and the vector input is illustrated in Figure 4. The value of the boot configuration vector read in by the RC32438 during a cold reset may be determined by reading the Boot Configuration Vector (BCV) Register.
Signal
Name/Description
MDATA[3:0]
CPU Pipeline Clock Multiplier. This field specifies the value by which the PLL multiplies the master clock input (CLK) to obtain the processor clock frequency (PCLK). For
master clock input frequency constraints, refer to Table 3.1 in the RC32438 User Manual.
0x0 - PLL Bypass
0x1 - Multiply by 3
0x2 - Multiply by 4
0x3 - Multiply by 6
0x4 - Multiply by 8
0x5 - reserved
0x6 - reserved
0x7 - reserved
0x8 - reserved
0xD - reserved
0xE - reserved
0xF - reserved
MDATA[5:4]
External Clock Divider. This field specifies the value by which the IPBus clock
(ICLK), which is always 1/2 PCLK, is divided in order to generate the external clock
output on the EXTCLK pin.
0x0 - Divide by 1
0x1 - Divide by 2
0x2 - Divide by 4
0x3 - reserved
MDATA[6]
Endian. This bit specifies the endianness.
0x0 - little endian
0x1 - big endian
Table 3 Boot Configuration Encoding (Part 1 of 2)
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Signal
Name/Description
MDATA[7]
Boot Device Width. This field specifies the width of the boot device (i.e., Device 0).
0x0 - 8-bit boot device width
0x1 - 16-bit boot device width
MDATA[8]
Reset Mode. This bit specifies the length of time the RSTN signal is driven.
0x0 - Normal reset: RSTN driven for minimum of 4096 clock cycles
0x1 - reserved
MDATA[11:9]
PCI Mode. This bit controls the operating mode of the PCI bus interface. The initial
value of the EN bit in the PCIC register is determined by the PCI mode.
0x0 - Disabled (EN initial value is zero)
0x1 - PCI satellite mode with PCI target not ready (EN initial value is one)
0x2 - PCI satellite mode with suspended CPU execution (EN initial value is one)
0x3 - PCI host mode with external arbiter (EN initial value is zero)
0x4 - PCI host mode with internal arbiter using fixed priority arbitration algorithm
(EN initial value is zero)
0x5 - PCI host mode with internal arbiter using round robin arbitration algorithm
(EN initial value is zero)
0x6 - reserved
0x7 - reserved
MDATA[12]
Disable Watchdog Timer. When this bit is set, the watchdog timer is disabled following a cold reset.
0x0 - Watchdog timer enabled
0x1 - Watchdog timer disabled
MDATA[15:13]
Reserved. These pins must be driven low during boot configuration.
Table 3 Boot Configuration Encoding (Part 2 of 2)
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Logic Diagram — RC32438
Miscellaneous
Signals
CLK
COLDRSTN
RSTN
EXTCLK
2
6
22
Ethernet
EJTAG / JTAG
Signals
Debug
Signals
General Purpose
I/O
I2C-Bus
Serial I/O
MIIMDC
MIIMDIO
MII0CL
MII0CRS
MII0RXCLK
MII0RXD[3:0]
MII0RXDV
MII0RXER
MII0TXCLK
MII0TXD[3:0]
MII0TXENP
MII0TXER
MII1CL
MII1CRS
MII1RXCLK
MII1RXD[3:0]
MII1RXDV
MII1RXER
MII1TXCLK
MII1TXD[3:0]
MII1TXENP
MII1TXER
16
Memory
and
Peripheral
Bus
4
14
2
4
2
2
2
32
4
8
4
4
4
RC32438
32
EJTAG_TMS
JTAG_TCK
JTAG_TDI
JTAG_TDO
JTAG_TMS
JTAG_TRST_N
4
4
INST
CPU
GPIO[31:0]
BDIRN
BGN
BOEN
BRN
BWEN[1:0]
CSN[5:0]
MADDR[21:0]
MDATA[15:0]
OEN
RWN
WAITACKN
4
DDRADDR[13:0]
DDRBA[1:0]
DDRCASN
DDRCKE
DDRCKN[1:0]
DDRCKP[1:0]
DDRCSN[1:0]
DDRDATA[31:0]
DDRDM[7:0]
DDRDQS[3:0]
DDROEN[3:0]
DDRRASN
DDRVREF
DDRWEN
PCIAD[31:0]
PCICBEN[3:0]
PCICLK
PCIDEVSELN
PCIFRAMEN
PCIGNTN[3:0]
PCIIRDYN
PCILOCKN
PCIPAR
PCIPERRN
PCIREQN[3:0]
PCIRSTN
PCISERRN
PCISTOPN
PCITRDYN
DDR Bus
PCI Bus
32
SDA
SCL
VccCore
VccI/O
Vss
VccPLL
VssPLL
SDO
SDI
SCK
Power/Ground
Figure 1 Logic Diagram
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AC Timing Definitions
Below are examples of the AC timing characteristics used throughout this document.
Tlow
Tper
Thigh
clock
Tdo
Tdo
Tzd
Tdz
Tjitter
Trise
Tfall
Output signal 1
Output signal 2
Tsu
Thld
Input Signal 1
Tpw
Signal 1
Signal 2
Tskew
Signal 3
Figure 2 AC Timing Definitions Waveform
Symbol
Definition
Tper
Clock period.
Tlow
Clock low. Amount of time the clock is low in one clock period.
Thigh
Clock high. Amount of time the clock is high in one clock period.
Trise
Rise time. Low to high transition time.
Tfall
Fall time. High to low transition time.
Tjitter
Jitter. Amount of time the reference clock (or signal) edge can vary on either the rising or falling edges.
Tdo
Data out. Amount of time after the reference clock edge that the output will become valid. The minimum time represents the data output hold.
The maximum time represents the earliest time the designer can use the data.
Tzd
Z state to data valid. Amount of time after the reference clock edge that the tri-stated output takes to become valid.
Tdz
Data valid to Z state. Amount of time after the reference clock edge that the valid output takes to become tri-stated.
Tsu
Input set-up. Amount of time before the reference clock edge that the input must be valid.
Thld
Input hold. Amount of time after the reference clock edge that the input must remain valid.
Tpw
Pulse width. Amount of time the input or output is active for asynchronous signals.
Tslew
Slew rate. The rise or fall rate for a signal to go from a high to low, or low to high.
X(clock)
Timing value. This notation represents a value of ‘X’ multiplied by the clock time period of the specified clock. Using 5(CLK) as an example:
X = 5 and the oscillator clock (CLK) = 25MHz, then the timing value is 200.
Tskew
Skew. The amount of time two signal edges deviate from one another.
Table 4 AC Timing Definitions
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System Clock Parameters
Values based on systems running at recommended supply voltages and operating temperatures, as shown in Tables 15 and 16.
Parameter
PCLK1
Symbol
200MHz
Reference
Min
Max
Edge
Frequency
none
Max
Min
Max
300MHz
Min
Max
Units
200
200
233
200
266
200
300
MHz
5.0
5.0
4.2
5.0
3.8
5.0
3.3
5.0
ns
100
100
100
116.5
100
133
100
150
MHz
10.0
10.0
10.0
8.5
10.0
7.5
6.7
10.0
ns
25
66.6
25
77.6
25
88.6
25
100
MHz
Tper_5a
15.0
40.0
12.9
40.0
11.2
40.0
10
40
ns
Thigh_5a,
Tlow_5a
40
60
40
60
40
60
40
60
% of
Tper_5a
Trise_5a,
Tfall_5a
—
3.0
—
3.0
—
3.0
—
3.0
ns
Tjitter_5a
—
0.1
—
0.1
—
0.1
—
0.1
ns
Frequency
none
Tper
CLK5
Min
266MHz
200
Tper
ICLK2,3,4
233MHz
Frequency
none
Timing
Diagram
Reference
See Figure 3.
Table 5 Clock Parameters
1.
The CPU pipeline clock (PCLK) speed is selected during cold reset by the boot configuration vector (see Table 3).
2.
ICLK is the internal IPBus clock. It is always equal to PCLK divided by 2. This clock cannot be sampled externally.
3. The ethernet
clock (MIIxRXCLK and MIIxTXCLK) frequency must be equal to or less than 1/2 ICLK (MIIxRXCLK and MIIxTXCLK = 4096 CLK clock cycles
>= 4096 CLK clock cycles
(RSTN ignored during this period
to allow pull-up to drive signal high)
1.
Warm reset caused by any of the conditions listed in the Warm Reset section of Chapter 3, Clocking and Initialization, in the RC32438 User Reference
Manual.
2.
The RC32438 tri-states the data bus, MDATA[15:0], and negates all memory control signals.
3.
The RC32438 negates RSTN.
4.
The RC32438 starts driving the data bus, MDATA[15:0], again, but does not sample the RSTN input.
5.
CPU begins executing by taking a MIPS soft reset exception and also starts sampling the RSTN input again.
Figure 5 Warm Reset AC Timing Waveform
Signal
Symbol1
Referenc
e Edge
200MHz
233MHz
266MHz
300MHz
Min
Max
Min
Max
Min
Max
Min
Max
0.0
0.9
0.0
0.9
0.0
0.9
0.0
0.8
ns
1.5
3.3
1.1
2.9
0.9
2.7
0.7
2.4
ns
Unit
Conditions
Timing
Diagram
Reference
Memory Bus - DDR Access
DDRDATA[31:0]
Tskew_7g2
DDRDQSx
Tdo_7k3
DDRDM[7:0]
Tdo_7l
DDRDQSx
1.5
3.3
1.1
2.9
0.9
2.7
0.7
2.4
ns
DDRDQS[3:0]
Tac
DDRCKPx
-0.75
0.75
-0.75
0.75
-0.75
0.75
-0.75
0.75
ns
Tdo_7m4
DDRCKPx
1.1
4.5
1.1
4.5
1.1
4.5
1.1
4.5
ns
DDRADDR[13:0],
DDRBA[1:0],
DDRCASN, DDRCKE,
DDRCSN[1:0],
DDROEN[3:0],
DDRRASN, DDRWEN
1. In the DDR data sheet: Tskew_7g
2.
See Figures 6
and 7.
Table 7 DDR SDRAM Timing Characteristics
= tDQSQ; Tdo_7k = tDH, tDS; Tdo_7l = tDH, tDS; Tac = tAC; Tdo_7m = tIH, tIS.
Meets DDR timing requirements for DDR 266 SDRAMs with 400 ps remaining margin to compensate for PCB propagation mismatches, which is adequate to guarantee functional
timing, provided the RC32438 DDR layout guidelines are followed.
3. Setup
times are calculated as applicable clock period - Tdo max. For example, if the DDR is running at 266MHz, it uses a 133MHz input clock. The period for a 133MHz clock is
7.5ns. If the Tdo max value is 4.5ns, the TIS parameter is 7.5ns minus 4.5ns = 3ns. The DDR spec for this parameter is 1ns, so there is 2ns of slack left over for board propagation.
Calculations for TDS are similar, but since this parameter is taken relative to the DDRDQS signals, which are referenced on both edges, the effective period with a 133MHz input
clock is only 3.75ns. So, if the max Tdo is 2.7ns, we have 3.75ns minus 2.7ns = 1.05ns for TDS. The DDR data sheet specs a value of 0.5ns for 266MHz, so this leaves 0.55ns slack
for board propagation delays.
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DDRCKPx
DDRCKNx
Tdo_7m
DDRCSNx
Tdo_7m
RowA
DDRADDR[13:0]
DDRCMD1
NOP
Tdo_7m
ACTV
Col A0
NOP
Col A2
RD
RD
BNKx
BNKx
RowB
NOP
NOP
PRECHG NOP
ACTV
NOP
DDRCKE
Tdo_7m
DDRBA[1:0]
BNKx
BNKx
BNKx
DDRDM[7:0]
DDROEN[3:0]
DDRDQSx (ideal)
D0
DDRDATA[31:0]2 (ideal)
D1 D2
D3
Tskew_7g
D0 D1 D2
D3
Tskew_7g
D0 D1 D2
D3
Tac (min)
DDRDQSx (min)
DDRDATA[31:0]2
Tac (max)
DDRDQSx (max)
DDRDATA[31:0]2
1
DDRCMD contains DDRRASN, DDRCASN and DDRWEN.
2 DDRDATA is either 32-bits or 16-bits wide depending on the DBW control bit in DDRC Register
(see Chapter 7, DDR Controller, in the RC32438 User Reference Manual).
Figure 6 DDR SDRAM AC Timing Waveform - SDRAM Read Access
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IDT 79RC32438
DDRCKPx
DDRCKNx
Tdo_7m
DDRCSNx
Tdo_7m
RowA
DDRADDR[13:0]
DDRCMD1
NOP
Tdo_7m
ACTV NOP
Col A0
Col A2
WR
WR
NOP
NOP
NOP
NOP
NOP
DDRCKE
DDRBA[1:0]
Tdo_7m
BNKx
BNKx
Tdo_7m
DDROEN[3:0]
DDRDQSx
Tdo_7l
Tdo_7l
FF
DDRDM[7:0]
DM0
FF
DM1 DM2 DM3
DDRDQSx
Tdo_7k
Tdo_7k
D0
DDRDATA[31:0]2
1
D1
D2
D3
DDRCMD contains DDRRASN, DDRCASN and DDRWEN.
2
DDRDATA is either 32-bits or 16-bits wide depending on the DBW control bit in DDRC Register
(see Chapter 7, DDR Controller, in the RC32438 User Reference Manual).
Figure 7 DDR SDRAM Timing Waveform — Write Access
Signal
Symbol
200MHz
Reference
Edge
Min Max
233MHz
266MHz
300MHz
Min
Min
Min
Max
Max
Max
Unit
Memory and Peripheral Bus1
MADDR[21:0]
MADDR[25:22]
Tdo_8a
0.0
5.0
0.0
5.0
0.0
5.0
0.0
5.0
ns
Tdz_8a2
0.0
0.1
0.0
0.1
0.0
0.1
0.0
0.1
ns
Tzd_8a2
0.5
2.3
0.5
2.3
0.5
2.3
0.5
2.3
ns
Tdo_8b
EXTCLK rising
0.0
6.5
0.0
6.5
0.0
6.5
0.0
6.5
ns
Tdz_8b2
EXTCLK rising
0.7
1.5
0.7
1.5
0.7
1.5
0.7
1.5
ns
Tzd_8b2
1.2
3.3
1.2
3.3
1.2
3.3
1.2
3.3
ns
Conditions
Timing
Diagram
Reference
See Figures 8
and 9.
Table 8 Memory and Peripheral Bus AC Timing Characteristics (Part 1 of 3)
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IDT 79RC32438
Signal
MDATA[15:0]
Symbol
Tsu_8c
200MHz
Reference
Edge
Min Max
233MHz
266MHz
300MHz
Min
Max
Min
Max
Min
Max
EXTCLK rising
Unit
7.0
—
7.0
—
7.0
—
7.0
—
ns
Thld_8c
0.0
—
0.0
—
0.0
—
0.0
—
ns
Tdo_8c
0.0
4.0
0.0
4.0
0.0
4.0
0.0
4.0
ns
Tdz_8c2
0.0
0.1
0.0
0.1
0.0
0.1
0.0
0.1
ns
Tzd_8c2
0.5
2.2
0.5
2.2
0.5
2.2
0.5
2.2
ns
EXTCLK3
Tper_8d
none
10.0
—
8.33
—
7.5
—
6.66
—
ns
BDIRN
Tdo_8e
EXTCLK rising
BOEN
BRN
1.0
4.0
1.0
4.0
1.0
4.0
1.0
4.0
ns
Tdz_8e2
-1.0
-0.1
-1.0
-0.1
-1.0
-0.1
-1.0
-0.1
ns
Tzd_8e2
0.4
1.0
0.4
1.0
0.4
1.0
0.4
1.0
ns
Tdo_8f
1.0
4.0
1.0
4.0
1.0
4.0
1.0
4.0
ns
Tdz_8f2
0.1
0.4
0.1
0.4
0.1
0.4
0.1
0.4
ns
Tzd_8f2
1.1
2.0
1.1
2.0
1.1
2.0
1.1
2.0
ns
5.5
—
5.5
—
5.5
—
5.5
—
ns
0.0
—
0.0
—
0.0
—
0.0
—
ns
Tsu_8g
EXTCLK rising
EXTCLK rising
Thld_8g
BGN
Tdo_8h
EXTCLK rising
1.0
4.0
1.0
4.0
1.0
4.0
1.0
4.0
ns
WAITACKN4
Tsu_8h
EXTCLK rising
5.8
—
5.8
—
5.8
—
5.8
—
ns
0.0
—
0.0
—
0.0
—
0.0
—
ns
2(EXTCLK)
—
2(EXTCLK)
—
2(EXTCLK)
—
2(EXTCLK)
—
ns
Thld_8h
Tpw_8h2
CSN[5:0]
RWN
OEN
BWEN[1:0]
Tdo_8i
none
0.0
4.0
0.0
4.0
0.0
4.0
0.0
4.0
ns
Tdz_8i2
0.1
0.4
0.1
0.4
0.1
0.4
0.1
0.4
ns
Tzd_8i2
0.6
2.2
0.6
2.2
0.6
2.2
0.6
2.2
ns
0.0
4.0
0.0
4.0
0.0
4.0
0.0
4.0
ns
Tdz_8j2
-0.7
0.1
-0.7
0.1
-0.7
0.1
-0.7
0.1
ns
Tzd_8j2
0.6
1.1
0.6
1.1
0.6
1.1
0.6
1.1
ns
Tdo_8j
Tdo_8k
EXTCLK rising
EXTCLK rising
0.0
4.0
0.0
4.0
0.0
4.0
0.0
4.0
ns
Tdz_8k2
-0.4
0.2
-0.4
0.2
-0.4
0.2
-0.4
0.2
ns
Tzd_8k2
0.8
1.5
0.8
1.5
0.8
1.5
0.8
1.5
ns
Tdo_8l
EXTCLK rising
0.0
4.0
0.0
4.0
0.0
4.0
0.0
4.0
ns
Tdz_8l2
EXTCLK rising
0
0.2
0
0.2
0
0.2
0
0.2
ns
Tzd_8l2
0.8
1.7
0.8
1.7
0.8
1.7
0.8
1.7
ns
Conditions
Timing
Diagram
Reference
See Figures 8
and 9 (cont.)
Table 8 Memory and Peripheral Bus AC Timing Characteristics (Part 2 of 3)
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IDT 79RC32438
Signal
Symbol
200MHz
Reference
Edge
Min Max
DMAREQN[1:0]
Tpw_8n2
None
DMADONEN[1:0]
Tsu_8o
EXTCLK rising
233MHz
266MHz
300MHz
Min
Min
Max
Min
Max
2(ICLK)
—
2(ICLK)
—
ns
Max
Unit
2(ICLK)
—
2(ICLK)
6.0
—
6.0
—
6.0
—
6.0
—
ns
1.0
—
1.0
—
1.0
—
1.0
—
ns
Thld_8o
DMAFINN[1:0]
Tdo_8p
EXTCLK rising
1.5
6.0
1.5
6.0
1.5
6.0
1.5
6.0
ns
CPU, INST
Tdo_8m
EXTCLK rising
2.0
10.0
2.0
10.0
2.0
10.0
2.0
10.0
ns
Conditions
Timing
Diagram
Reference
See Figures 10
and 11.
See Figures 8
and 9.
Table 8 Memory and Peripheral Bus AC Timing Characteristics (Part 3 of 3)
1.
The RC32438 provides bus turnaround cycles to prevent bus contention when going from a read to write, write to read, and during external bus ownership. For example, there are
no cycles where an external device and the RC32438 are both driving. See Chapter 6, Device Controller, in the RC32438 User Reference Manual.
2. The values for this symbol
were determined by calculation, not by testing.
3.
The frequency of EXTCLK is programmable. See the External Clock Divider description in Table 3 of this data sheet.
4.
WAITACKN must meet the setup and hold times if it is synchronous or the minimum pulse width if it is asynchronous.
Tper_8d
Thigh_8d
EXTCLK
Tdo_8a
Tlow_8d
Addr[21:0]
MADDR[21:0]
Tdo_8b
MADDR[25:22]
Addr[25:22]
RWN
Tdo_8i
Tdo_8i
CSN[5:0]
1111
BWEN[1:0]
Tdo_8k
Tdo_8k
OEN
Thld_8c
Tsu_8c
Tdz_8c
Tzd_8c
Data
MDATA[15:0]
RC32438
samples
read data
Tdo_8e
BDIRN
Tdo_8f
Tdo_8e
Tdo_8f
BOEN
WAITACKN
Tdo_8m
Tdo_8m
CPU,
INST
Figure 8 Memory and Peripheral Bus AC Timing Waveform — Read Access
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IDT 79RC32438
EXTCLK
Tdo_8a
Addr[21:0]
MADDR[21:0]
Tdo_8b
MADDR[25:22]
Addr[25:22]
Tdo_8j
RWN
Tdo_8i
CSN[5:0]
Tdo_8l
BWEN[1:0]
1111
Byte Enables
1111
OEN
Tdo_8c
Data
MDATA[15:0]
BDIRN
Tdo_8f
BOEN
WAITACKN
Tdo_8m
CPU,
INST
Figure 9 Memory and Peripheral Bus AC Timing Waveform — Write Access
EXTCLK
Thld_8o
Tsu_8o
DMADONENx
MDATA[15:0]
data
MADDR[25:0]
address
Tdo_8p
Tdo_8p
DMAFINNx
Figure 10 DMADONEN and DMAFINN AC Timing Waveform
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IDT 79RC32438
EXTCLK
DMAREQN
Tpw_8n
Tpw_8n
ICLK
CSN
Tpw_8n is the minimum amount of time before DMAREQN is
recognized as asserted or deasserted.
Figure 11 DMAREQN AC Timing Waveform
Signal
Symbol
200MHz
Reference
Edge
Min Max
233MHz
266MHz
300MHz
Min
Max
Min
Max
Min
Max
None
Unit
Conditions
Timing
Diagram
Reference
Ethernet1
MIIMDC
Tper_9a
40.0
—
33.3
—
30.0
—
30.0
—
ns
16.0
—
13.0
—
12.0
—
12.0
—
ns
10.0
—
10.0
—
10.0
—
10.0
—
ns
Thld_9b
0.0
—
0.0
—
0.0
—
0.0
—
ns
Tdo_9b2
10
300
10
300
10
300
10
300
ns
Thigh_9a,
Tlow_9a
MIIMDIO
MIIxRXCLK,
MIIxTXCLK3
MIIxRXCLK,
MIIxTXCLK3
MIIxRXD[3:0],
MIIxRXDV,
MIIxRXER
MIIxTXD[3:0],
MIIxTXENP,
MIIxTXER
Tsu_9b
Tper_9c
MIIMDC rising
None
399.96 400.4 399.96 400.4 399.96 400.4 399.96 400.4
ns
Thigh_9c,
Tlow_9c
140
260
140
260
140
260
140
260
ns
Trise_9c,
Tfall_9c
—
3.0
—
3.0
—
3.0
—
3.0
ns
39.9
40.0
39.9
40.0
39.9
40.0
39.9
40.0
ns
Thigh_9d,
Tlow_9d
14.0
26.0
14.0
26.0
14.0
26.0
14.0
26.0
ns
Trise_9d,
Tfall_9d
—
2.0
—
2.0
—
2.0
—
2.0
ns
MIIxRXCLK
rising
10.0
—
10.0
—
10.0
—
10.0
—
ns
10.0
—
10.0
—
10.0
—
10.0
—
ns
MIIxTXCLK
rising
0.0
25.0
0.0
25.0
0.0
25.0
0.0
25.0
ns
Tper_9d
Tsu_9e
Thld_9e
Tdo_9f
None
See Figure 12.
10 Mbps
100 Mbps
Table 9 Ethernet AC Timing Characteristics
1. There are two
2.
MII interfaces and the timing is the same for each. “X” represents interface 0 or 1.
The values for this symbol were determined by calculation, not by testing.
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IDT 79RC32438
3. The
ethernet clock (MIIxRXCLK and MIIxTXCLK) frequency must be equal to or less than 1/2 ICLK (MIIxRXCLK and MIIxTXCLK VOUT > 0.1(VccI/O)
—
—
+38(VccI/O)
mA
VOUT = 0.18(VccI/O)
VIL
-0.3
—
0.3(VccI/O)
V
VIH
0.5(VccI/O)
—
5.5
V
CIN
—
—
8.0
pF
—
Inputs
—
—
+ 10
µA
Vcc (max)
I/OLEAK W/O
Pull-ups/downs
—
—
+ 10
µA
Vcc (max)
I/OLEAK with
Pull-ups/downs
—
—
+ 80
µA
Vcc (max)
IOH(AC)
Switching
IOL(AC) Switching
Capacitance
Leakage
Table 18 DC Electrical Characteristics (Part 2 of 2)
AC Test Conditions
Input Reference Voltage
50 Ω
RC32438
Output
.
Parameter
Input pulse levels
Input rise/fall
Input reference level
Output reference levels
AC test load
Test
Point
50 Ω
Value
Units
SSTL I/O
Other I/O
0 to 2.5
0 to 3.3
V
0.8
1.0
ns
0.5(VccSI/O)
0.5(VccI/O)
V
1.25
1.5
V
35
35
pF
Figure 26 AC Test Conditions
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May 25, 2004
IDT 79RC32438
Absolute Maximum Ratings
Symbol
Parameter
I/O supply except for SSTL_22
VCCI/O
2
Min1
Max1
Unit
-0.6
4.0
V
-0.6
3.0
V
VCCSI/O
I/O supply for SSTL_2
VCCCore
Core Supply Voltage
-0.6
2.0
V
VCCPLL
PLL supply
-0.6
2.0
V
VinI/O
I/O Input Voltage except for SSTL_2
-0.6
VccI/O+ 0.5
V
VinSI/O
I/O Input Voltage for SSTL_2
-0.6
VccSI/O+ 0.5
V
Ta
Industrial
Ambient Operating Temperature
-40
+85
°C
Ta
Commercial
Ambient Operating Temperature
0
+70
°C
Ts
Storage Temperature
-40
+125
°C
Table 19 Absolute Maximum Ratings
1. Functional
and tested operating conditions are given in Table 15. Absolute maximum ratings are stress ratings only, and functional operation at the maximums is not guaranteed. Stresses beyond those listed may affect device reliability or cause permanent damage to the device.
2. SSTL_2
I/Os are used to connect to DDR SDRAM.
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IDT 79RC32438
Package Pin-out — 416-PBGA Signal Pinout for RC32438
The following table lists the pin numbers, signal names, and number of alternate functions for the RC32438 device. Signal names ending with an
“_N” or “N” are active when low.
Pin
Function
Alt
Pin
Function
Alt
Pin
Function
Alt
Function
D11
Vss
P1
GPIO[00]
D12
Vss
P2
MIIMDIO
GPIO[31]
D13
Vcc Core
P3
GPIO[02]
A4
CSN[05]
D14
Vcc Core
P4
Vcc I/O
AC20 Vcc I/O
A5
CSN[02]
D15
Vcc Core
P23
Vcc CORE
AC21 Vcc I/O
A6
BWEN[01]
D16
Vss
P24
DDRDM[03]
AC22 Vcc I/O
A7
BOEN
D17
Vss
P25
DDRDATA[31]
AC23 Vcc SI/O
A8
MDATA[15]
D18
Vss
P26
DDRDATA[30]
AC24 Vcc SI/O
A9
MDATA[14]
D19
Vss
R1
INST
AC25 DDROEN[00]
A10
MDATA[10]
D20
Vcc I/O
R2
EJTAG_TMS
AC26 DDRADDR[00]
A11
MDATA[07]
D21
Vcc SI/O
R3
Vss
AD1
JTAG_TRST_N
A12
MDATA[06]
D22
Vcc SI/O
R4
Vcc I/O
AD2
JTAG_TMS
A13
GPIO[29]
D23
Vcc SI/O
R23
Vcc SI/O
AD3
GPIO[15]
A14
GPIO[22]
D24
Vcc SI/O
R24
DDRDATA[29]
AD4
SDA
A15
MADDR[21]
D25
DDRDATA[11]
R25
DDRADDR[13]
AD5
GPIO[27]
A16
MADDR[19]
D26
DDRDATA[10]
R26
DDRCSN[01]
AD6
PCIAD[30]
A17
MADDR[16]
E1
MII0TXD[02]
T1
NC
AD7
PCIAD[26]
A18
MADDR[13]
E2
MII0TXD[00]
T2
GPIO[03]
AD8
PCICBEN[03]
A19
MADDR[10]
E3
MII0TXD[01]
T3
CPU
AD9
PCIAD[21]
A20
MADDR[07]
E4
Vss
T4
Vcc I/O
AD10 PCIAD[18]
A21
MADDR[05]
E23
Vcc SI/O
T23
Vcc SI/O
AD11 PCIREQN[01]
A22
MADDR[02]
E24
DDRDATA[09]
T24
DDRCSN[00]
AD12 PCICLK
A23
RSTN
E25
DDRDATA[12]
T25
DDRADDR[10]
AD13 PCIGNTN[00]
A24
DDRDATA[02]
E26
DDRDM[01]
T26
DDRADDR[12]
AD14 PCIIRDYN
A25
DDRDATA[04]
F1
MII0TXER
U1
JTAG_TDI
AD15 PCISTOPN
A26
DDRDATA[05]
F2
MII0TXD[03]
U2
JTAG_TCK
AD16 PCIPERRN
B1
MII0CRS
F3
MII0TXENP
U3
JTAG_TDO
AD17 PCIAD[15]
B2
WAITACKN
F4
Vss
U4
Vcc I/O
AD18 PCIAD[11]
B3
RWN
F23
Vcc SI/O
U23
Vss
AD19 PCIAD[08]
B4
CSN[04]
F24
DDRDQS[01]
U24
DDRADDR[11]
AD20 PCIAD[06]
B5
CSN[01]
F25
DDRDATA[15]
U25
DDRWEN
AD21 PCIGNTN[03]
B6
BWEN[00]
F26
DDRDATA[14]
U26
DDRADDR[09]
AD22 PCIAD[00]
B7
BGN
G1
MII0RXER
V1
SDO
AD23 PCIAD[04]
B8
MDATA[13]
G2
MII0RXDV
V2
SDI
AD24 DDRDM[05]
A1
MII0CL
A2
GPIO[25]
A3
1
1
1
Pin
Alt
AC17 Vss
AC18 Vss
1
1
AC19 Vss
1
1
Table 20 RC32438 416-pin Signal Pin-Out (Part 1 of 3)
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May 25, 2004
IDT 79RC32438
Pin
Function
Alt
Pin
Function
Alt
Pin
Function
Alt
Function
Alt
B9
MDATA[11]
G3
MII0TXCLK
V3
GPIO[05]
B10
MDATA[03]
G4
Vss
V4
Vss
AD26 DDROEN[01]
B11
MDATA[08]
G23
Vss
V23
Vss
AE1
N/C
B12
MDATA[02]
G24
DDRCKP[00]
V24
DDRADDR[08]
AE2
GPIO[13]
1
B13
GPIO[23]
G25
DDRDATA[16]
V25
DDRRASN
AE3
GPIO[18]
1
B14
MADDR[20]
G26
DDRDATA[13]
V26
DDRCASN
AE4
GPIO[24]
1
B15
GPIO[20]
H1
MII1CRS
W1
GPIO[04]
AE5
GPIO[26]
1
B16
MADDR[17]
H2
MII1CL
W2
SCK
AE6
PCIAD[31]
B17
MADDR[14]
H3
MII1RXCLK
W3
CLK
AE7
PCIAD[28]
B18
MADDR[12]
H4
Vss
W4
Vss
AE8
PCIAD[25]
B19
MADDR[09]
H23
Vss
W23
Vss
AE9
GPIO[30]
B20
MADDR[06]
H24
DDRCKN[00]
W24
DDRADDR[07]
AE10 PCIAD[22]
B21
MADDR[03]
H25
DDRDATA[18]
W25
DDRADDR[06]
AE11 PCIAD[19]
B22
MADDR[00]
H26
DDRVREF
W26
DDRBA[01]
AE12 PCIAD[16]
B23
DDRDATA[01]
J1
MII1RXD[01]
Y1
GPIO[06]
B24
DDRDQS[00]
J2
MII1RXD[00]
Y2
Vcc PLL
B25
DDRDM[00]
J3
MII1RXD[03]
Y3
GPIO[08]
B26
DDRDATA[06]
J4
Vss
Y4
Vss
AE16 PCIDEVSELN
C1
MII0RXD[00]
J23
Vss
Y23
Vss
AE17 PCILOCKN
C2
MII0RXCLK
J24
DDRDATA[17]
Y24
DDRCKN[01]
AE18 PCICBEN[01]
C3
EXTCLK
J25
DDRDATA[21]
Y25
DDRBA[00]
AE19 PCIAD[13]
C4
COLDRSTN
J26
DDRDATA[19]
Y26
DDRADDR[05]
AE20 PCIAD[10]
C5
OEN
K1
MII1RXDV
AA1
Vss PLL
AE21 PCICBEN[00]
C6
CSN[03]
K2
MII1RXD[02]
AA2
GPIO[07]
C7
CSN[00]
K3
MII1TXCLK
AA3
Vcc PLL
AE23 PCIAD[02]
C8
BRN
K4
Vcc Core
AA4
Vss
AE24 PCIGNTN[01]
C9
BDIRN
K23
Vss
AA23
Vss
AE25 DDRDM[07]
C10
MDATA[12]
K24
DDRDATA[20]
AA24
DDRCKP[01]
AE26 DDRDM[04]
C11
MDATA[09]
K25
DDRDQS[02]
AA25
DDRADDR[03]
AF1
GPIO[16]
1
C12
MDATA[01]
K26
DDRCKE
AA26
DDRADDR[04]
AF2
GPIO[17]
1
C13
MDATA[05]
L1
MII1TXD[00]
AB1
GPIO[09]
1
AF3
GPIO[19]
1
C14
MDATA[04]
L2
MII1RXER
AB2
GPIO[14]
1
AF4
SCL
C15
MDATA[00]
L3
MII1TXD[03]
AB3
GPIO[11]
1
AF5
GPIO[28]
C16
GPIO[21]
L4
Vcc Core
AB4
Vss
AF6
PCIAD[29]
C17
MADDR[18]
L23
Vcc Core
AB23
Vss
AF7
PCIAD[27]
C18
MADDR[15]
L24
DDRDM[02]
AB24
Vcc SI/O
AF8
PCIAD[24]
C19
MADDR[11]
L25
DDRDATA[24]
AB25
DDRADDR[01]
AF9
PCIAD[23]
1
1
1
1
Pin
1
1
AD25 DDROEN[02]
1
AE13 PCIRSTN
AE14 PCIREQN[02]
1
1
AE15 PCIFRAMEN
AE22 PCIAD[05]
1
Table 20 RC32438 416-pin Signal Pin-Out (Part 2 of 3)
44 of 59
May 25, 2004
IDT 79RC32438
Pin
Function
Alt
Pin
Function
Alt
Pin
Function
Alt
Pin
Function
C20
MADDR[08]
L26
DDRDATA[22]
AB26
DDRADDR[02]
AF10
PCIAD[20]
C21
MADDR[04]
M1
MII1TXD[02]
AC1
Vss PLL
AF11
PCIAD[17]
C22
MADDR[01]
M2
MII1TXD[01]
AC2
GPIO[10]
1
AF12
PCIREQN[03]
C23
DDRDATA[00]
M3
MIIMDC
AC3
GPIO[12]
1
AF13
PCIREQN[00]
C24
DDRDATA[03]
M4
Vcc Core
AC4
Vss
AF14
PCICBEN[02]
C25
DDRDATA[08]
M23
Vcc Core
AC5
Vss
AF15
PCITRDYN
C26
DDRDATA[07]
M24
DDRDATA[23]
AC6
Vss
AF16
PCISERRN
D1
MII0RXD[03]
M25
DDRDATA[27]
AC7
Vcc I/O
AF17
PCIPAR
D2
MII0RXD[01]
M26
DDRDATA[25]
AC8
Vcc I/O
AF18
PCIAD[14]
D3
MII0RXD[02]
N1
MII1TXER
AC9
Vcc I/O
AF19
PCIAD[12]
D4
Vss
N2
MII1TXENP
AC10
Vss
AF20
PCIAD[09]
D5
Vss
N3
GPIO[01]
AC11
Vss
AF21
PCIAD[07]
D6
Vss
N4
Vcc Core
AC12
Vss
AF22
PCIAD[03]
D7
Vcc I/O
N23
Vcc Core
AC13
Vcc Core
AF23
PCIAD[01]
D8
Vcc I/O
N24
DDRDATA[26]
AC14
Vcc Core
AF24
PCIGNTN[02]
D9
Vcc I/O
N25
DDRDATA[28]
AC15
Vcc Core
AF25
DDRDM[06]
D10
Vss
N26
DDRDQS[03]
AC16
Vss
AF26
DDROEN[03]
1
Alt
Table 20 RC32438 416-pin Signal Pin-Out (Part 3 of 3)
RC32438 Power Pins
Vcc I/O
Vcc SI/O
Vcc Core
Vcc PLL
D7
D21
D13
Y2, AA3
D8
D22
D14
D9
D23
D15
D20
D24
K4
P4
E23
L4
R4
F23
L23
T4
R23
M4
U4
T23
M23
AC7
AB24
N4
AC8
AC23
N23
AC9
AC24
P23
AC20
AC13
AC21
AC14
AC22
AC15
Table 21 RC32438 Power Pins
45 of 59
May 25, 2004
IDT 79RC32438
RC32438 Ground Pins
Vss
Vss
Vss
Vss
Vss PLL
D4
L10
P13
U15
AA1, AC1
D5
L11
P14
U16
D6
L12
P15
U17
D10
L13
P16
U23
D11
L14
P17
V4
D12
L15
R3
V23
D16
L16
R10
W4
D17
L17
R11
W23
D18
M10
R12
Y4
D19
M11
R13
Y23
E4
M12
R14
AA4
F4
M13
R15
AA23
G4
M14
R16
AB4
G23
M15
R17
AB23
H4
M16
T10
AC4
H23
M17
T11
AC5
J4
N10
T12
AC6
J23
N11
T13
AC10
K10
N12
T14
AC11
K11
N13
T15
AC12
K12
N14
T16
AC16
K13
N15
T17
AC17
K14
N16
U10
AC18
K15
N17
U11
AC19
K16
P10
U12
K17
P11
U13
K23
P12
U14
Table 22 RC32438 Ground Pins
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May 25, 2004
IDT 79RC32438
RC32438 Alternate Signal Functions
Pin
GPIO
Alternate
Pin
GPIO
Alternate
Pin
GPIO
Alternate
A14
GPIO[22]
MADDR[24]
Y1
GPIO[06]
U0RTSN
AE2
GPIO[13]
U1CTSN
B13
GPIO[23]
MADDR[25]
Y3
GPIO[08]
U1SOUT
AE3
GPIO[18]
DMAFINN[0]
B15
GPIO[20]
MADDR[22]
AA2
GPIO[07]
U0CTSN
AE4
GPIO[24]
PCIREQN[4]
C16
GPIO[21]
MADDR[23]
AB1
GPIO[09]
U1SINP
AE5
GPIO[26]
PCIGNTN[4]
N3
GPIO[01]
U0SINP
AB2
GPIO[14]
DMAREQN[0]
AE9
GPIO[30]
PCIMUINTN
P1
GPIO[00]
U0SOUT
AB3
GPIO[11]
U1DSRN
AF1
GPIO[16]
DMADONE[0]
P3
GPIO[02]
U0RIN
AC2
GPIO[10]
U1DTRN
AF2
GPIO[17]
DMADONE[1]
T2
GPIO[03]
U0DCDN
AC3
GPIO[12]
U1RTSN
AF3
GPIO[19]
DMAFINN[1]
V3
GPIO[05]
U0DSRN
AD3
GPIO[15]
DMAREQN[1]
AF5
GPIO[28]
PCIGNTN[5]
W1
GPIO[04]
U0DTRN
AD5
GPIO[27]
PCIREQN[5]
Table 23 RC32438 Alternate Signal Functions
RC32438 Signals Listed Alphabetically
The following table lists the RC32438 pins in alphabetical order.
Signal Name
I/O Type
Location
Signal Category
BDIRN
O
C9
Memory and Peripheral Bus
BGN
O
B7
Memory and Peripheral Bus
BOEN
O
A7
Memory and Peripheral Bus
BRN
I
C8
Memory and Peripheral Bus
BWEN[00]
O
B6
Memory and Peripheral Bus
BWEN[01]
O
A6
Memory and Peripheral Bus
CLK
I
W3
System
COLDRSTN
I
C4
System
CPU
O
T3
Debug
CSN[00]
O
C7
Memory and Peripheral Bus
CSN[01]
O
B5
CSN[02]
O
A5
CSN[03]
O
C6
CSN[04]
O
B4
CSN[05]
O
A4
Table 24 RC32438 Alphabetical Signal List (Part 1 of 9)
47 of 59
May 25, 2004
IDT 79RC32438
Signal Name
I/O Type
Location
Signal Category
DDRADDR[00]
O
AC26
DDR Bus
DDRADDR[01]
O
AB25
DDRADDR[02]
O
AB26
DDRADDR[03]
O
AA25
DDRADDR[04]
O
AA26
DDRADDR[05]
O
Y26
DDRADDR[06]
O
W25
DDRADDR[07]
O
W24
DDRADDR[08]
O
V24
DDRADDR[09]
O
U26
DDRADDR[10]
O
T25
DDRADDR[11]
O
U24
DDRADDR[12]
O
T26
DDRADDR[13]
O
R25
DDRBA[00]
O
Y25
DDRBA[01]
O
W26
DDRCASN
O
V26
DDRCKE
O
K26
DDRCKN[00]
O
H24
DDRCKN[01]
O
Y24
DDRCKP[00]
O
G24
DDRCKP[01]
O
AA24
DDRCSN[00]
O
T24
DDRCSN[01]
O
R26
DDRDATA[00]
I/O
C23
DDRDATA[01]
I/O
B23
DDRDATA[02]
I/O
A24
DDRDATA[03]
I/O
C24
DDRDATA[04]
I/O
A25
DDRDATA[05]
I/O
A26
DDRDATA[06]
I/O
B26
DDRDATA[07]
I/O
C26
DDRDATA[08]
I/O
C25
DDRDATA[09]
I/O
E24
DDRDATA[10]
I/O
D26
Table 24 RC32438 Alphabetical Signal List (Part 2 of 9)
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May 25, 2004
IDT 79RC32438
Signal Name
I/O Type
Location
Signal Category
DDRDATA[11]
I/O
D25
DDR Bus
DDRDATA[12]
I/O
E25
DDRDATA[13]
I/O
G26
DDRDATA[14]
I/O
F26
DDRDATA[15]
I/O
F25
DDRDATA[16]
I/O
G25
DDRDATA[17]
I/O
J24
DDRDATA[18]
I/O
H25
DDRDATA[19]
I/O
J26
DDRDATA[20]
I/O
K24
DDRDATA[21]
I/O
J25
DDRDATA[22]
I/O
L26
DDRDATA[23]
I/O
M24
DDRDATA[24]
I/O
L25
DDRDATA[25]
I/O
M26
DDRDATA[26]
I/O
N24
DDRDATA[27]
I/O
M25
DDRDATA[28]
I/O
N25
DDRDATA[29]
I/O
R24
DDRDATA[30]
I/O
P26
DDRDATA[31]
I/O
P25
DDRDM[00]
O
B25
DDRDM[01]
O
E26
DDRDM[02]
O
L24
DDRDM[03]
O
P24
DDRDM[04]
O
AE26
DDRDM[05]
O
AD24
DDRDM[06]
O
AF25
DDRDM[07]
O
AE25
DDRDQS[00]
I/O
B24
DDRDQS[01]
I/O
F24
DDRDQS[02]
I/O
K25
DDRDQS[03]
I/O
N26
DDROEN[00]
O
AC25
DDROEN[01]
O
AD26
Table 24 RC32438 Alphabetical Signal List (Part 3 of 9)
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May 25, 2004
IDT 79RC32438
Signal Name
I/O Type
Location
Signal Category
DDROEN[02]
O
AD25
DDR Bus
DDROEN[03]
O
AF26
DDRRASN
O
V25
DDRVREF
I
H26
DDRWEN
O
U25
EJTAG_TMS
I
R2
EJTAG/ICE
EXTCLK
O
C3
System
GPIO[00]
I/O
P1
General Purpose Input/Output
GPIO[01]
I/O
N3
GPIO[02]
I/O
P3
GPIO[03]
I/O
T2
GPIO[04]
I/O
W1
GPIO[05]
I/O
V3
GPIO[06]
I/O
Y1
GPIO[07]
I/O
AA2
GPIO[08]
I/O
Y3
GPIO[09]
I/O
AB1
GPIO[10]
I/O
AC2
GPIO[11]
I/O
AB3
GPIO[12]
I/O
AC3
GPIO[13]
I/O
AE2
GPIO[14]
I/O
AB2
GPIO[15]
I/O
AD3
GPIO[16]
I/O
AF1
GPIO[17]
I/O
AF2
GPIO[18]
I/O
AE3
GPIO[19]
I/O
AF3
GPIO[20]
I/O
B15
GPIO[21]
I/O
C16
GPIO[22]
I/O
A14
GPIO[23]
I/O
B13
GPIO[24]
I/O
AE4
GPIO[25]
I/O
A2
GPIO[26]
I/O
AE5
GPIO[27]
I/O
AD5
Table 24 RC32438 Alphabetical Signal List (Part 4 of 9)
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May 25, 2004
IDT 79RC32438
Signal Name
I/O Type
Location
Signal Category
GPIO[28]
I/O
AF5
General Purpose Input/Output
GPIO[29]
I/O
A13
GPIO[30]
I/O
AE9
GPIO[31]
I/O
A3
INST
O
R1
Debug
JTAG_TCK
I
U2
EJTAG/ICE
JTAG_TDI
I
U1
JTAG_TDO
O
U3
JTAG_TMS
I
AD2
JTAG_TRST_N
I
AD1
MADDR[00]
O
B22
MADDR[01]
O
C22
MADDR[02]
O
A22
MADDR[03]
O
B21
MADDR[04]
O
C21
MADDR[05]
O
A21
MADDR[06]
O
B20
MADDR[07]
O
A20
MADDR[08]
O
C20
MADDR[09]
O
B19
MADDR[10]
O
A19
MADDR[11]
O
C19
MADDR[12]
O
B18
MADDR[13]
O
A18
MADDR[14]
O
B17
MADDR[15]
O
C18
MADDR[16]
O
A17
MADDR[17]
O
B16
MADDR[18]
O
C17
MADDR[19]
O
A16
MADDR[20]
O
B14
MADDR[21]
O
A15
MDATA[00]
I/O
C15
MDATA[01]
I/O
C12
Memory and Peripheral Bus
Table 24 RC32438 Alphabetical Signal List (Part 5 of 9)
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May 25, 2004
IDT 79RC32438
Signal Name
I/O Type
Location
Signal Category
MDATA[02]
I/O
B12
Memory and Peripheral Bus
MDATA[03]
I/O
B10
MDATA[04]
I/O
C14
MDATA[05]
I/O
C13
MDATA[06]
I/O
A12
MDATA[07]
I/O
A11
MDATA[08]
I/O
B11
MDATA[09]
I/O
C11
MDATA[10]
I/O
A10
MDATA[11]
I/O
B9
MDATA[12]
I/O
C10
MDATA[13]
I/O
B8
MDATA[14]
I/O
A9
MDATA[15]
I/O
A8
MII0CL
I
A1
MII0CRS
I
B1
MII0RXCLK
I
C2
MII0RXD[00]
I
C1
MII0RXD[01]
I
D2
MII0RXD[02]
I
D3
MII0RXD[03]
I
D1
MII0RXDV
I
G2
MII0RXER
I
G1
MII0TXCLK
I
G3
MII0TXD[00]
O
E2
MII0TXD[01]
O
E3
MII0TXD[02]
O
E1
MII0TXD[03]
O
F2
MII0TXENP
O
F3
MII0TXER
O
F1
MII1CL
I
H2
MII1CRS
I
H1
MII1RXCLK
I
H3
MII1RXD[00]
I
J2
MII1RXD[01]
I
J1
Ethernet Interfaces
Table 24 RC32438 Alphabetical Signal List (Part 6 of 9)
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May 25, 2004
IDT 79RC32438
Signal Name
I/O Type
Location
Signal Category
MII1RXD[02]
I
K2
Ethernet Interfaces
MII1RXD[03]
I
J3
MII1RXDV
I
K1
MII1RXER
I
L2
MII1TXCLK
I
K3
MII1TXD[00]
O
L1
MII1TXD[01]
O
M2
MII1TXD[02]
O
M1
MII1TXD[03]
O
L3
MII1TXENP
O
N2
MII1TXER
O
N1
MIIMDC
O
M3
MIIMDIO
I/O
P2
OEN
O
C5
Memory and Peripheral Bus
PCIAD[00]
I/O
AD22
PCI Bus
PCIAD[01]
I/O
AF23
PCIAD[02]
I/O
AE23
PCIAD[03]
I/O
AF22
PCIAD[04]
I/O
AD23
PCIAD[05]
I/O
AE22
PCIAD[06]
I/O
AD20
PCIAD[07]
I/O
AF21
PCIAD[08]
I/O
AD19
PCIAD[09]
I/O
AF20
PCIAD[10]
I/O
AE20
PCIAD[11]
I/O
AD18
PCIAD[12]
I/O
AF19
PCIAD[13]
I/O
AE19
PCIAD[14]
I/O
AF18
PCIAD[15]
I/O
AD17
PCIAD[16]
I/O
AE12
PCIAD[17]
I/O
AF11
PCIAD[18]
I/O
AD10
PCIAD[19]
I/O
AE11
PCIAD[20]
I/O
AF10
Table 24 RC32438 Alphabetical Signal List (Part 7 of 9)
53 of 59
May 25, 2004
IDT 79RC32438
Signal Name
I/O Type
Location
Signal Category
PCIAD[21]
I/O
AD9
PCI Bus
PCIAD[22]
I/O
AE10
PCIAD[23]
I/O
AF9
PCIAD[24]
I/O
AF8
PCIAD[25]
I/O
AE8
PCIAD[26]
I/O
AD7
PCIAD[27]
I/O
AF7
PCIAD[28]
I/O
AE7
PCIAD[29]
I/O
AF6
PCIAD[30]
I/O
AD6
PCIAD[31]
I/O
AE6
PCICBEN[00]
I/O
AE21
PCICBEN[01]
I/O
AE18
PCICBEN[02]
I/O
AF14
PCICBEN[03]
I/O
AD8
I
AD12
PCIDEVSELN
I/O
AE16
PCIFRAMEN
I/O
AE15
PCIGNTN[00]
I/O
AD13
PCIGNTN[01]
I/O
AE24
PCIGNTN[02]
I/O
AF24
PCIGNTN[03]
I/O
AD21
PCIIRDYN
I/O
AD14
PCILOCKN
I/O
AE17
PCIPAR
I/O
AF17
PCIPERRN
I/O
AD16
PCIREQN[00]
I/O
AF13
PCIREQN[01]
I/O
AD11
PCIREQN[02]
I/O
AE14
PCIREQN[03]
I/O
AF12
PCIRSTN
I/O
AE13
PCISERRN
I/O
AF16
PCISTOPN
I/O
AD15
PCITRDYN
I/O
AF15
RSTN
I/O
A23
System
RWN
O
B3
Memory and Peripheral Bus
PCICLK
Table 24 RC32438 Alphabetical Signal List (Part 8 of 9)
54 of 59
May 25, 2004
IDT 79RC32438
Signal Name
I/O Type
Location
Signal Category
SCK
I/O
W2
SPI Interface
SCL
I/O
AF4
I2C
SDA
I/O
AD4
SDI
I/O
V2
SDO
I/O
V1
SPI Interface
Vcc CORE
D13, D14, D15, K4,
L4, L23, M4, M23,
N4, N23, P23,
AC13, AC14, AC15
Vcc I/O, Vcc SI/O
See Table 21 for a listing of power pins.
Vcc PLL
Vss
See Table 22 for a listing of ground pins.
Vss PLL
WAITACKN
I
B2
Memory and Peripheral Bus
Table 24 RC32438 Alphabetical Signal List (Part 9 of 9)
55 of 59
May 25, 2004
IDT 79RC32438
RC32438 Pinout — Top View
1
2
3
4
5
6
7 8
9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26
A
B
C
D
E
F
G
H
J
K
L
M
N
P
R
T
U
V
W
Y
AA
AB
AC
VccPLL
VssPLL
VccPLL
VssPLL
AD
AE
AF
Vss (Ground)
Vcc SI/O (Power)
Vcc I/O (Power)
Vcc Core (Power)
56 of 59
May 25, 2004
IDT 79RC32438
RC32438 Package Drawing — 416-pin BGA
57 of 59
May 25, 2004
IDT 79RC32438
RC32438 Package Drawing
— Page Two
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May 25, 2004
IDT 79RC32438
Ordering Information
79RCXX
Product
Type
YY
Operating
Voltage
XXXX
999
Device
Type
Speed
A
A
Package
Temp range/
Process
Blank
Commercial Temperature
(0°C to +70°C Ambient)
I
Industrial Temperature
(-40° C to +85° C Ambient)
BB
416-pin BGA
200
233
266
300
200 MHz Pipeline Clk
233 MHz Pipeline Clk
266 MHz Pipeline Clk
300 MHz Pipeline Clk
438
Integrated Core Processor
K
1.2V +/- 0.1V Core Voltage (200/233)
1.3V+/- 0.1V Core Voltage (266/300)
79RC32
32-bit Embedded
Microprocessor
Valid Combinations
79RC32K438 -200BB, 233BB, 266BB, 300BB
416-pin BGA package, Commercial Temperature
79RC32K438 -200BBI, 233BBI
416-pin BGA package, Industrial Temperature
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May 25, 2004
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