GS9020ACFV

GENLINX ™II GS9020A Serial Digital Video Input Processor DATA SHEET FEATURES • fully compatible with SMPTE 259M • drop-in replacement for the GS9020 • auto-standard operation to 540MHz • embedded EDH and data processing core • selectable loop through or re-serialized EDH-processed serial output • noise immune HVF timing signal outputs • configurable FIFO reset pulse for clearing downstream FIFOs • ANC header and TRS-ID correction for all standards • user controlled output blanking • ITU-R-601 output clipping for active picture area • ancillary data indication • low system power • selectable I²C interface or 8-bit parallel port for access to EDH flags and device configuration bits • EDH flags also available on dedicated pins • seamless flag mapping to GS9021 EDH coprocessor • 80 pin LQFP • Pb-free and Green APPLICATIONS SMPTE 259M serial digital receiver for composite and component standards including 4:4:4:4 at 540Mb/s with EDH processing; Noise immune digital sync and timing generation; Cost effective EDH insertion and checking for serial routing and distribution applications. ORDERING INFORMATION PART NUMBER GS9020ACFV GS9020ACTV GS9020ACFVE3 GS9020ACTVE3 PACKAGE 80 pin LQFP Tray 80 pin LQFP Tape 80 pin LQFP Tray 80 pin LQFP Tape TEMPERATURE 0°C to 70°C 0°C to 70°C 0°C to 70°C 0°C to 70°C Pb-FREE AND GREEN No No Yes Yes DESCRIPTION The GS9020A is specifically designed to deserialize SMPTE 259M serial digital signals. The inclusion of Error Detection and Handling (EDH) ensures the integrity of the data being received from the serial digital interface (SDI). Internal 75Ω termination resistors allow INTERLINX™ seamless connection with the GS9035A Reclocker or the GS9025A Receiver, thus providing a complete high performance, digital video input processor with EDH, digital sync signal generation, and other system features. The GS9020A also includes a parallel to serial converter and NRZI scrambler to provide re-serialized, EDH compliant data output. The EDH core implements EDH insertion and extraction according to SMPTE RP-165. This core also generates noise immune timing signals such as horizontal sync, vertical blanking, field ID and ancillary data identification. It also provides many system features such as a FIFO reset pulse (which can be programmed to coincide with either EAV or SAV), TRS-ID and ANC header correction, user controlled output blanking and ITU-R-601 output clipping. The GS9020A has an I²C (Inter-Integrated Circuit, I²C is a registered Trademark of Philips) serial interface bus and an 8-bit parallel port for external access to all error flags and device configuration bits. GS9020A Revision Date: June 2004 GENNUM CORPORATION P.O. Box 489, Stn. A, Burlington, Ontario, Canada L7R 3Y3 Tel. +1 (905) 632-2996 Fax. +1 (905) 632-5946 E-mail: info@gennum.com www.gennum.com Document No. 19922 - 3 SDO BUF SDO 0 1 PARALLEL TO SERIAL CONVERTER WITH SCRAMBLER DESCRAMBLER FRAMED DATA [9:0] 10 SDI GS9020A BUF SDI SERIAL TO PARALLEL CONVERTER 10 SYNC DETECTOR DOUT[9:0] FIFO_RESET 5 EDH AND DATA PROCESSING CORE HVF CLIP_TRS ANC_CHKSM SCI BUF SCI SCRAMBLER PRESCALER PCLK OUT ALIGNING CONTROL UNIT 4 RESET 7 STANDARDS INDICATOR HOSTIF TRS_ERR DEDICATED FLAG PORT PCLKOUT BLOCK DIAGRAM 2 of 31 19922 - 3 ABSOLUTE MAXIMUM RATINGS PARAMETER Supply Voltage Input Voltage Range (any input) Operating Temperature Range Storage Temperature Lead Temperature (soldering, 10 sec) VALUE -0.3V to 6.0V -0.3 to VDD +0.3V 0°C to 70°C -55°C to 150°C 260°C GS9020A DC ELECTRICAL CHARCTERISTICS VDD = 5.0 V, TA = 0 - 70°C unless otherwise shown. PARAMETER Supply Voltage Supply Current Unloaded High Speed Serial Data and Clock Inputs SYMBOL VDD ΙDD CONDITIONS MIN 4.75 TYP 5.0 110 190 3.65 800 75 2.7 800 10 8 4 2 MAX 5.25 3.95 1250 0.8 150 1 0.4 - UNITS V mA mA V mV Ω V mV V V µA µA pF V V mA mA mA NOTES 270Mb/s 540Mb/s 3.14 450 2.0 VCM VDIFFIN RPULLUP 1 Serial Data Outputs VCM VDIFFOUT 2 TTL Compatible CMOS Inputs VILMAX VIHMIN ΙIN VIN = VDD or GND - 3 4 CIN TTL Compatible CMOS Outputs VOLMAX VOHMIN ΙOUT at ΙOUT at ΙOUT 2.4 - 5 6 7 NOTES 1. RPULLUP refers to the internal pullup resistor associated with the serial data and clock inputs (see Figure 4). 2. Assuming 100Ω differential termination resistor as shown in figure 7. Given VDIFFOUT = 800mV and a 100Ω termination, ISDO = 8mA. 3. The following inputs have internal pull-up resistors: SDOMODE. The following inputs have internal pull-down resistors: ANC_CHKSM, FLYWDIS, FLAG_MAP, RESET, CRC_MODE, FIFOE/S AND HOSTIF_MODE. To ensure reliable operation these pins should be externally connected to GND or Vcc. 4. All other inputs. 5. The following outputs have 8mA drivers (typical): PCLKOUT 6. The following outputs have 4mA drivers (typical): S[1:0], FL[4:0], ANC_DATA, DOUT[9:0], V, F[2:0], H, FIFO_RESET, TRS_ERR, NO_EDH 7.The following outputs have 2mA drivers (typical): P[7:0], STD[3:0], INTERRUPT 3 of 31 19922 - 3 AC ELECTRICAL CHARCTERISTICS VDD = 5.0 V, TA = 0 - 70°C unless otherwise shown. PARAMETER Serial Input Clock Frequency Serial Data Input Setup Time Serial Data Input Hold Time Serial Data Output Duty Cycle Distortion Serial Output Jitter Serial Data Output Rise Time Parallel Clock Output Jitter Input Timing SYMBOL ƒSCI tSS tSH CONDITIONS MIN - TYP - MAX 540 UNITS MHz NOTES 600 - - ps 1 GS9020A 600 - - ps 1 - 5 - % 540Mb/s at eye crossing - 360 600 - ps p-p ps 27MHz at 50% voltage level t1 t2 - 700 - ps p-p 20 with 25pF loading with 25pF loading with 25pF loading with 25pF loading with 25pF loading T/2 T/2-3 T/2-7 6 - 9 T/2+7 T/2+0.5 T/2+1 400 - ns ns ns ns ns ns ns kHz ns 2 2 3 3 3 Output Delay Time Output Hold Time Output Setup Time Flag Port Disable Time Flag Port Enable Time I²C Clock Frequency Host Interface Setup Time Host Interface Hold Time Host Interface Output Enable Time Host Interface Output Disable Time Reset Time Pulse Width NOTES tOD tOH tOS tFDIS tFEN ƒSCL tHS tHH tHEN tHDIS tRESET 4 6 - - ns 4 with 25pF loading - - 21 ns 4 with 25pF loading - - 10 ns 4 100 - - ns 1. The serial clock rising edge should occur at the centre of the data period for optimum performance. (See Figure 1) 2. Since the GS9020A does not have a parallel clock input, it is not possible to define timing details relative to it. Instead the GS9020A has a parallel clock output and all timing information is relative to PCLKOUT. The flag port pins (FL[4:0], F_R/W, S[1:0]) are the only inputs where the timing details are important. The timing requirements are shown in Figure 2. 3. These times are relative to the rising edge of PCLKOUT as shown in Figure 3. Note that the data transitions at the falling edge of PCLKOUT. T is the parallel clock period in ns. 4. The Host Interface signals, P[7:0], R/W, A/D and CS are asynchronous to the parallel clock. 4 of 31 19922 - 3 PIN CONNECTIONS ANC_DATA TRS_ERR CLIP_TRS ANC_CHKSM BLANK_EN SDOMODE BYPASS_EDH VBLANKS/L SGND SDO SDO SVDD VDD GND FLAG_MAP F2 F1 F0 H V 80 79 78 77 76 75 74 73 72 71 70 69 68 67 66 65 64 63 62 61 1 60 2 59 3 58 4 57 5 56 6 55 7 54 8 53 9 52 GS9020A 10 51 TOP VIEW 11 50 12 49 13 48 14 47 15 46 16 45 17 44 18 43 19 42 20 21 22 23 24 25 26 27 28 29 30 31 32 33 34 35 36 37 38 39 40 41 SCL/P4 SDA/P3 A2/P2 A1/P1 A0/P0 R/W A/D CS VDD GND RESET STD3 STD2 STD1 STD0 FL4 FL3 FL2 FL1 FL0 GS9020A VDD GND GND VDD VDDSDI SDI SDI VDDSDI VDDSCI SCI SCI VDDSCI VDD GND HOSTIF_MODE FIFOE/S CRC_MODE P7 P6 P5 DOUT9 DOUT8 DOUT7 DOUT6 DOUT5 DOUT4 DOUT3 DOUT2 DOUT1 VDD GND DOUT0 PCLKOUT FIFO_RESET NO_EDH FLYWDIS INTERRUPT F_R/W S0 S1 PIN DESCRIPTIONS NUMBER 6, 7 10, 11 15 SYMBOL SDI, SDI SCI, SCI HOSTIF_MODE TYPE I I I Differential serial data inputs. Differential serial clock inputs. Host interface mode select. When HIGH, the host interface is configured for I²C mode. When LOW, the host interface is configured for parallel port mode. FIFO_RESET pulse control. When HIGH, the output FIFO_RESET pulse occurs on the EAV word. When LOW, the output FIFO_RESET pulse occurs on the SAV word. CRC_MODE enable. When HIGH, CRC_MODE is enabled. When LOW, CRC_MODE is disabled. In parallel port mode, these are bits 7:5 of the host interface address/data bus. In I²C mode, these pins must be set LOW. In parallel port mode, this is bit 4 of the host interface address/data bus. In I²C mode, this is the serial clock input for the I²C port. In parallel port mode, this is bit 3 of the host interface address/data bus. In I²C mode, this is the serial data pin for the I²C port. In parallel port mode, these are bits 2:0 of the host interface address/data bus. In I²C mode, these are input bits which define the I²C slave address for the device. Parallel port read/write control. When HIGH, the parallel port is configured as an output (read mode). When LOW, the parallel port is configured as an input (write mode). In I²C mode, this pin must be set HIGH. DESCRIPTION 16 FIFOE/S I 17 CRC_MODE I 18 - 20 P[7:5] I/O 21 SCL/P4 I/O 22 SDA/P3 I/O 23 - 25 A[2:0]/P[2:0] I/O 26 R/W I 5 of 31 19922 - 3 PIN DESCRIPTIONS NUMBER 27 SYMBOL A/D TYPE I DESCRIPTION Parallel port address/data bus control. When HIGH, the parallel port is used for address input. When LOW, the parallel port is used for data input or output. In I²C mode, this pin must be set LOW. Parallel port chip select. When CS is LOW and R/W is HIGH, the GS9020A drives the address/ data bus. When CS is LOW and R/W is LOW, the user should drive the address/data bus. When CS is HIGH, the address/data bus is in a high impedance state (Hi - Z). In I²C mode, this pin must be set HIGH. Reset. When LOW, the internal control circuitry is reset. Video standards indication as described in section 1.4 EDH flag data port to allow access to the EDH flags. Control bits which select whether FF, AP, or ANC EDH flags are active on the EDH flag data port (FL[4:0]). In FLAG_MAP mode, the S[1:0] pins become outputs (see device description). Flag port read/write control. When HIGH, FL[4:0] are configured as outputs allowing EDH flags to be read from the device. When LOW, FL[4:0] are configured as inputs allowing EDH flags to be overwritten in the outgoing EDH packet. In FLAG_MAP mode this pin must be set HIGH. Interrupt output. This output goes low when EDH errors occur. This pin is an open drain output and requires an external pullup resistor. If this output is not used, a pullup resistor is not required. Flywheel disable. When HIGH, the internal flywheel is disabled. When LOW, the internal flywheel is enabled. No EDH present indication. When HIGH, indicates EDH packets are not present in the incoming data stream. FIFO Reset output. Asserted LOW during the TRSID word for composite standards and the EAV or SAV word for component standards. Parallel clock output. Parallel digital video data outputs. Vertical sync indication. Horizontal sync indication. Field indication. F2 is the MSB. FLAG_MAP mode enable. When HIGH, FLAG_MAP mode is enabled. When LOW, FLAG_MAP mode is disabled. 70, 71 73 SDO/SDO VBLANKS/L O I Differential serial data outputs. Vertical blanking interval control. For NTSC signals, when VBLANKS/L is set LOW the 19 line blanking interval is selected and when set HIGH the 9 line blanking interval is selected. For PAL D2 signals, when VBLANKS/L is set LOW the 17 line blanking interval is selected and when set HIGH the 7 line blanking interval is selected. For PAL component signals VBLANKS/L should be set LOW. Bypass EDH control. When HIGH, the device allows the EDH packet to pass through unaltered. Serial data output control. When LOW, the serial data output is re-serialized processed data. When HIGH, the serial data output is the looped through serial input. After changing SDOMODE, the GS9020A must be reset for proper operation. Blanking enable. When LOW, incoming data words are set to appropriate blanking levels. Ancillary checksum updating enable. When HIGH, ancillary checksum updating is enabled. 28 CS I GS9020A 31 32 - 35 36 - 40 41, 42 RESET STD[3:0] FL[4:0] S[1:0] I O I/O I/O 43 F_R/W I 44 INTERRUPT O 45 FLYWDIS I 46 NO_EDH O 47 FIFO_RESET O 48 52-60,49 61 62 63 - 65 66 PCLKOUT DOUT[9:0] V H F[2:0] FLAG_MAP O O O O O I 74 BYPASS_EDH I 75 SDOMODE I 76 77 BLANK_EN ANC_CHKSM I I 6 of 31 19922 - 3 PIN DESCRIPTIONS NUMBER 78 SYMBOL CLIP_TRS TYPE I DESCRIPTION Clip and TRS correction control. When HIGH, the TRS Blanking, ITU-R-601 clipping and TRS insertion features are enabled. TRS error indication. When HIGH, indicates a TRS error in the data stream such as a missing TRS, an improperly placed TRS, or an incorrect TRS ID word. 79 TRS_ERR O GS9020A 80 ANC_DATA O Ancillary data indication. When HIGH, indicates that an ANC packet is coming out of the device. The output is high from the beginning of the first header word to the end of the checksum word of the ANC packet. Power supply connection for the serial processing circuitry (nominally +5V). Ground connection for the serial processing circuitry. Power supply connection for the serial data outputs. To save power when not using the SDO/ SDO outputs, set this pin to ground. Ground connection for the serial data outputs. Power supply connection for the internal 75 ohm pullup resistor (nominally +5V) on the serial data input lines. Power supply connection for the internal 75 ohm pullup resistor (nominally +5V) on the serial clock input lines. Power supply connection for the parallel processing circuitry (nominally +5V). Ground for the parallel processing circuitry. 1, 4, 13 2, 3, 14 69 VDD GND SVDD 72 5, 8 SGND VDD_SDI, SDI 9, 12 VDD_SCI, SCI 29,51,68 30,50,67 VDD GND HOSTIF_MODE FLAG_MAP EDH FLAG EXTRACTION HOST INTERFACE/ FLAG PORT I²C INTERFACE DEDICATED FLAG PORT 8-BIT PARALLEL INTERFACE CRC COMPARISON/ CALCULATION FRAMED DATA [9:0] VBLANKS/L FLYWDIS H, V, F 10 ERRORED FIELD COUNTER FLAGS BYPASS_EDH HVF 5 FLYWHEEL TRS DETECTION ANCILLARY CHECKSUM CALCULATION/ COMPARISON ERROR FLAGS & FORMAT PACKET 10 MUX 10 DOUT[9:0] CRC_MODE TRS COMPARE ANCILLARY CHECKSUM CORRECTION 10 NEW CRC CALCULATION TRS_ ERROR I²C is a registered Trademark of Philips ITU-R-601 CLIPPING TRS BLANKING TRS INSERTION/ CORRECTION 10 BLANK_EN CLIP_TRS BLOCK DIAGRAM - EDH AND DATA CORE PROCESSING 7 of 31 19922 - 3 DETAILED DESCRIPTION The GS9020A EDH coprocessor consists of five major blocks: 1. Data Input/Output Block (with automatic standard detect) 2. Flywheel Block SDI/SDI and SCI/SCI are high speed Pseudo-ECL (PECL) compatible differential inputs with internal pullup resistors (75Ω nominally) as shown in Figure 4. Note that each pullup resistor has a dedicated power pin allowing the use of other interfacing topologies. The internal pullup resistors allow the GS9020A to be easily interfaced to the GS9025A as shown in Figure 5 and Figure 17. An external diode is required to offset the input signals to the input range of the GS9020A. For maximum signal integrity the GS9025A and GS9020A should be placed as close together as possible. The PECL serial input signals are first converted to CMOS levels and then deserialized to 10 bit parallel format (based on the TRS headers), descrambled, and then passed to the processing core. 1.2 Parallel Digital Video Data Outputs GS9020A 3. EDH Block 4. Data Processing Block 5. Host Interface (HOSTIF) Block The following convention is used to differentiate device pins from HOST interface table bits. PIN XX LOGIC OPR HOSTIF YY LOGIC OPR (logic operator) gives the combinational relationship (if one exists), between pins which also have a corresponding HOST bit. This operator governs the signal the GS9020A receives. The following is the list of possible logic operators and their meaning. PIN DOUT[9:0] LOGIC OPR HOST BIT The output of the device is 10-bit digital video data and is present on the DOUT[9:0] output pins. 1.3 Reserialized Data Output LOGIC OPR AND OR > < MEANING XX AND YY XX OR YY XX takes precedence over YY YY takes precedence over XX PIN SDO, SDO SDOMODE LOGIC OPR HOST BIT 1. DATA INPUT/OUTPUT BLOCK 1.1 Serial Video Data Inputs PIN SDI, SDI SCI, SCI LOGIC OPR HOST BIT Serial data and clock signals are supplied to the GS9020A chip via the SDI/SDI and SCI/SCI pins, respectively. Eight standards are supported: Composite, 4:2:2 Component with 13.5MHz Y sampling, 4:2:2 16 x 9 wide screen with 18MHz Y sampling, and 4:4:4:4 Component Single Link with 13.5MHz Y sampling, all in both NTSC and PAL formats. See Table 1. The GS9020A also provides PECL differential serial data outputs (SDO/SDO). The serial data outputs can operate in one of two modes as controlled by the SDOMODE pin. When SDOMODE is set LOW, re-serialized processed data is output at the SDO/SDO output pins. In this mode it is recommended that the lock output of the GS9025A or GS9035A connected to the RESET input of the GS9020A, and to a pull up resistor. This will effectively reset the GS9020A whenever the signal lock is lost. Note that any GS9020A programming through the host interface will be lost after this reset. It will be necessary to reprogram the GS9020A after each reset. When SDOMODE is set HIGH, the serial input data is supplied directly to the SDO/SDO output pins, bypassing the processing core. After changing SDOMODE, the GS9020A must be reset for proper operation. 8 of 31 19922 - 3 The serial data output circuits are shown in Figure 6. The serial data outputs are designed to drive 50-75Ω controlled impedance traces and can be easily connected to the GS9028 cable driver as shown in Figure 7 and Figure 18. Note that to output proper PECL signal levels, a resistor must be connected between the two serial data outputs. 1.4 Automatic Standard Detection The S bit, used for single link data standards only, is encoded in the TRSID word and indicates if the data is in RGB or YCRCB format as per SMPTE RP174. In automatic standard detection mode, the S bit can be read from the HOSTIF read table. In manual mode, the S bit must be set in the HOSTIF write table. 1.5 Parallel Clock Output GS9020A PIN LOGIC OPR HOST BIT STD_SEL PIN PCLKOUT LOGIC OPR HOST BIT STD[3:0] STD[3:0] S The device automatically detects the incoming video standard. The detected standard is encoded on the STD[3:0] pins and the HOSTIF read table bits as shown in Table 1 and Table 3. TABLE 1 STANDARD NAME NTSC 4:2:2 Component with 13.5MHz Y sampling NTSC Composite NTSC 4:2:2 16x9 Widescreen with 18MHz Y sampling NTSC 4:4:4:4 Single Link with 13.5MHz Y sampling PAL 4:2:2 Component with 13.5MHz Y sampling PAL Composite PAL 4:2:2 16x9 Widescreen with 18MHz Y sampling PAL 4:4:4:4 Single Link with 13.5MHz Y sampling STD[3:0] 0000 0001 0010 The PCLKOUT pin provides the output parallel clock. All synchronous I/O are timed relative to PCLKOUT. The following listing shows which I/O's are synchronous and which are not. Timing for synchronous outputs is shown in Figure 3. Timing for synchronous inputs is shown in Figure 2. SYNCHRONOUS FL[4:0] S[1:0] FIFO_RESET DOUT[9:0] F[2:0] 0011 0100 0101 0110 0111 V H ANC_DATA BLANK_EN F_R/W NO_EDH ASYNCHRONOUS P[7:5] SCL/P4 INTERRUPT SDA/P3 A[2:0]/P[2:0] R/W A/D CS FLAG_MAP RESET CRC_MODE VBLANKS/L HOSTIF_MODE FIFOE/S FLYWDIS BYPASS_EDH SDO_MODE ANC_CHKSM CLIP_TRS Noise immunity is included to ensure that momentary signal corruption does not affect the automatic standards detection function. This built in noise immunity results in delayed detection time during power up and when switching between standards. Delays range from as little as eight lines when switching between component standards to as much as four frames when switching between PAL and NTSC standards. If this delay is intolerable, the user can manually set the standard through the HOSTIF write table. To set the standard manually, the STD_SEL bit must be set HIGH and the S bit and STD[3:0] pins/HOSTIF bits set accordingly. The default standard upon reset of the chip is NTSC 4:2:2 component (13.5MHz Y sampling). STD[3:0] TRS_ERROR 9 of 31 19922 - 3 2. FLYWHEEL BLOCK 2.1 FVH Flywheel 2.2 Accurate FVH Timing Signals PIN PIN FLYWDIS LOGIC OPR OR HOST BIT FLYWDIS SWITCHFLYW F[2:0] V H VBLANKS/L LOGIC OPR HOST BIT F[2:0] GS9020A AND VBLANKS/L The flywheel’s primary function is to provide accurate field, vertical, and horizontal output signals in the presence of noisy or error prone input data. Flywheel synchronization is based on the TRS words in the incoming data stream. The FVH flywheel synchronizes to the incoming data stream in less than two fields once the incoming standard has been detected. Once synchronized, the TRS words in the incoming data stream and those generated by the flywheel are constantly compared to ensure that the flywheel remains synchronized. Noise insensitivity is accomplished by re-synchronizing the flywheel to the data stream only if it is not aligned for long periods of time. For component signals, four mismatches between the EAV signal in the incoming and flywheel generated signals over a window of eight lines will trigger the flywheel to begin re-synchronization. For composite signals, re-synchronization is triggered by mismatches in the TRS encoded line numbers or field bits for 7 consecutive lines. The flywheel can be disabled by asserting the FLYWDIS control signal HIGH. Disabling the flywheel will remove the effective noise immunity. In this mode, FVH values will be decoded directly from the incoming data stream rather than being decoded from the flywheel. Note that when the flywheel is disabled, TRS_BLANK and TRS_INSERT will not function correctly if enabled. Therefore if the flywheel is disabled then so should TRS_BLANK and TRS_INSERT. FLYWDIS is available as an input pin and as a bit in the HOSTIF write table. The SWITCHFLYW control signal is used in applications where the data input to the GS9020A is switched between two synchronous signals. In this case, the two signals may be slightly misaligned and would normally require the flywheel to completely re-synchronize. In this scenario, the re-synchronization time would be undesirable. Asserting the SWITCHFLYW bit of the HOSTIF write table HIGH allows the flywheel to re-synchronize to the new incoming signal at the end of the switching line. For this functionality to operate properly, the two signals must both be in the active picture portion of the switching line at the time of the switch. The F[2:0] signals indicate the current field of the video data. Three F bits are necessary to accommodate the composite PAL standard which has 8 fields. The F[2:0] bits are available on dedicated output pins and via the HOSTIF read table. Figure 8a and 8b illustrate the position of the F[2:0] transition within a line for component and composite signals, respectively. For component standards only, F0 is used to indicate fields 0 and 1. The lines on which the transitions occur conform to the SMPTE standards. For component signals, the horizontal (H) signal is HIGH during the horizontal blanking region of the output signal, from EAV to SAV inclusive. For composite signals, the H signal remains HIGH only for the 3FF, 000, 000, 000, and TRSID words. Figure 8a and 8b illustrate the H output signal timing for component and composite signals, respectively. The vertical (V) signal timing is dependent on the incoming video standard and the VBLANKS/L control signal. The VBLANKS/L signal is available as an input pin and via the HOSTIF write table and should be set to indicate the form of the incoming data stream. This allows the flywheel to correctly structure the V bit for flywheel synchronization, TRS insertion, and TRS error indication. For component based standards, the transition of the V output signal within a line is shown in Figure 8a. The line on which the V output signal transitions from HIGH to LOW is summarized in the table below. The lines on which the LOW to HIGH transition occurs conform to the SMPTE standards. STANDARD NTSC 4:2:2 Component (13.5MHz Y sampling) NTSC 4:2:2 16x9 Widescreen (18MHz Y sampling) NTSC 4:4:4:4 Single Link (13.5MHz Y sampling) PAL 4:2:2 Component (13.5MHz Y sampling) PAL 4:2:2 16x9 Widescreen (18MHz Y sampling) PAL 4:4:4:4 Single Link (13.5MHz Y sampling) VBLANKS/L=1 9/272 VBLANKS/L=0 19/282 9/272 19/282 9/272 19/282 22/335 22/335 22/335 22/335 22/335 22/335 10 of 31 19922 - 3 For composite based standards, the V output signal is asserted HIGH as described in the following table: 2.4 FIFO Reset Pulse PIN VBLANKS/L=1 NTSC Composite from Line 525/ Sample 768 to Line 9/ Sample 767 inclusive AND from Line 263/ Sample 313 to Line 272/ Sample 767 inclusive VBLANKS/L=1 PAL Composite from Line 623/ Sample 382 to Line 5/ Sample 947 inclusive AND from Line 310/ Sample 948 to Line 317/ Sample 947 inclusive VBLANKS/L=0 from Line 525/ Sample 768 to Line 19/ Sample 767 inclusive AND from Line 263/ Sample 313 to Line 282/ Sample 767 inclusive VBLANKS/L=0 from Line 623/ Sample 382 to Line 15/ Sample 947 inclusive AND from Line 310/ Sample 948 to Line 327/ Sample 947 inclusive FIFOE/S FIFO_RESET LOGIC OPR HOST BIT GS9020A The GS9020A also provides a FIFO_RESET pulse on the FIFO_RESET output pin. This pin is always HIGH except when the TRSID word is exiting the device as shown in Figure 9. For component standards, a FIFOE/S input pin is used to determine if the FIFO_RESET pulse occurs during the EAV or SAV word of the outgoing data. If FIFOE/S is HIGH, the active low pulse of the FIFO_RESET output pin occurs during the EAV word. If FIFOE/S is LOW, the active low output pulse occurs during the SAV word. For composite signals the FIFOE/S pin has no effect since there is only one TRS-ID word per line. This feature is useful for synchronizing line store FIFOs that follow the GS9020A. 3. EDH PROCESSING BLOCK 2.3 TRS Errors PIN TRS_ERR LOGIC OPR HOST BIT TRS_ERR This section describes the GS9020A’s EDH features and functionality. 3.1 Error Flags The flywheel is used to indicate TRS errors. These errors are detected by comparing the TRS in the incoming data stream with the expected TRS based on the internal flywheel. If a mismatch occurs, the TRS_ERR signal is immediately set HIGH and maintained HIGH until a correct TRS occurs. The types of TRS errors detected are: • • • TRS missing TRS in wrong location PIN LOGIC OPR HOST BIT INCOMING ERROR FLAGS OUTGOING ERROR FLAGS STICKY IN STICKY OUT OVERWRITE VALUES OVERWRITE CONTROL TRS-ID is different from the one generated by the flywheel RO_CTRL RESERVED WORDS (INCOMING) RESERVED WORDS (OUTGOING) The TRS_ERR signal is available as an output pin and via the HOSTIF read table. The TRS_ERR signal should only be considered valid if the flywheel is enabled. All 15 EDH error flags can be read from the HOSTIF read table. The INCOMING ERROR FLAGS represent the EDH error flags present in the incoming EDH packet. The OUTGOING ERROR FLAGS represent the EDH error flags present in the outgoing EDH packet (after modification by the GS9020A). Please note that the EDH flags can also be accessed using the flag port as described later. The INCOMING and OUTGOING ERROR FLAGS, the incoming Validity bits (FFV and APV), and the EDH_CHKSM bit can be made "sticky". 11 of 31 19922 - 3 Sticky error flags that detect an error for a field remain asserted until a HOSTIF read is performed on those error flags. Sticky mode allows the user to perform HOSTIF reads on the error flags to detect if any errors have occurred since the last read, and are particularly useful when a read cannot be performed after every field. When STICKY IN is asserted HIGH, the incoming flags and validity bits are in sticky mode. When STICKY OUT is asserted HIGH, the outgoing flags and the EDH_CHKSM bit are in sticky mode. Note that the INTERRUPT signal is derived from these signals so that it too becomes sticky. STICKY IN and STICKY OUT are available in the HOSTIF write table. The ERROR FLAGS and the EDH_CHKSM bit are sticky HIGH. That is, once they are set HIGH, they remain HIGH until a read operation. The Validity bits are sticky LOW. That is, once they are set LOW, they remain LOW until a read operation. In some applications, the user may wish to insert user defined EDH error flags into the outgoing EDH packet. The desired outgoing error flags are written into the OVERWRITE VALUES words of the HOSTIF write table and are placed in the outgoing EDH packet when the corresponding OVERWRITE CONTROL bit is asserted HIGH. See Table 2 for the HOSTIF Write Table. The GS9020A also allows the user to overwrite the seven reserved words of the OUTGOING EDH packet. When RO_CTRL (Reserved Word Overwrite Control) is asserted HIGH, the GS9020A overwrites the reserved words in the OUTGOING EDH packet with those specified in the HOSTIF write table. If RO_CTRL is LOW, the GS9020A does not alter the reserved words. RO_CTRL is a control bit in the HOSTIF write table. The reserved words of the INCOMING EDH packet are also available via the HOSTIF read table. 3.2 CRC Calculation And Updating values based on the outgoing data stream are the ones inserted into the data stream. As a result, the CRC values in the outgoing data stream correctly reflect the contents of the outgoing data stream. The INCOMING FF and AP CRC values for the Full Field (FF) and Active Picture (AP) regions can be read from the HOSTIF read table. Similarly, the OUTGOING (calculated) FF and AP CRC values for the Full Field and Active Picture regions can be read from the HOSTIF read table. 3.3 Validity Bit GS9020A PIN LOGIC OPR HOST BIT FFV APV The VALIDITY (V) bits (as per SMPTE 165) present in the incoming EDH packet are used to indicate whether the CRC values are valid or invalid. If the V bit is HIGH, the CRC value is considered valid. In this case, the incoming CRC value is compared with the calculated CRC value to identify errors. If the V bit is LOW, the incoming CRC is invalid and a CRC comparison is not performed. If the device receives an EDH packet with the V bit set LOW it behaves as follows: 1. EDH = 0 (Not asserted for an invalid CRC) 2. EDA = EDAin "OR" EDHin (EDA calculated as usual) 3. A new calculated CRC value replaces the invalid one in the output EDH packet 4. The V bit will be set HIGH in the output EDH packet 5. Depending on whether one or both or FFV or APV is low, the Unknown Error Status (UES) flag corresponding to either FF or AP or both, is set HIGH in the output data. (No CRC check could be performed, so the data may or may not contain errors). The incoming V bits for the Full Field and Active Picture regions are available in the HOSTIF read table as FFV and APV, respectively. Outgoing full field (FFV) and active picture (APV) validity bits are set HIGH unless explicitly over-written through the HOSTIF write table or the flag port. PIN LOGIC OPR HOST BIT INCOMING FF CRC OUTGOING FF CRC INCOMING AP CRC OUTGOING AP CRC Since the device has the potential of modifying the full-field and active picture data with features like ITU-R-601 clipping and TRS insertion, the full field and active picture CRC values must be calculated for both the incoming and outgoing data streams. The calculated CRC values based on the incoming data stream are used for comparison with the embedded CRC values. However, the calculated CRC 12 of 31 19922 - 3 3.4 Ancillary Checksum Verification 3.6 ANC_DATA PIN ANC_CHKSM LOGIC OPR OR HOST BIT ANC_CHKSM EDH_CHKSM PIN ANC_DATA LOGIC OPR HOST BIT For each received ANC packet in the incoming data, the device compares the calculated checksum value to the embedded checksum for that ANC packet. If the checksum values do not match for any ANC packets within a field, an error is reported via the ancillary EDH flag in the EDH packet. In addition, if the ANC_CHKSM input pin or HOSTIF write table bit is asserted HIGH, the ancillary checksum correction block is enabled and the checksum in the ANC packet is replaced with the calculated one. This update is required to prevent the ANC data error from being flagged at every downstream EDH chip. When implementing applications which use the EDH core (ie. BYPASS_EDH set LOW), ANC_CHKSM will indicate a downstream FF/AP EDH error when an illegal/non-allowed (3FCH-3FFH) ANC_CHKSM input value is detected. As such, these values should not be present in the incoming data and the corresponding FF/AP EDH errors should not occur. However, if the user wishes to disable the ANC_CHKSM function, it can be deactivated by setting both the ANC_CHSKM pin and the ANC_CHKSM host interface bit LOW. If the chip is receiving ANC EDH flag information through the flag port or the HOSTIF, then the ANC EDH flag generated by the ancillary checksum verification block will be overwritten. However, the additional FF/AP EDH flag will still appear at the next downstream chip if an illegal checksum of 3FCH-3FFH was detected and the ANC_CHKSM function was enabled. If a checksum error is detected in the EDH packet itself, an additional separate error flag, EDH_CHKSM is set HIGH in the HOSTIF read table. 3.5 UES Error Flag Updating The ANC_DATA signal is set HIGH when an ancillary data packet is exiting the GS9020A. This pin is asserted from the start of the first header word through to the end of the checksum word of the ANC packet, inclusive, as shown in Figure 10. 3.7 NO_EDH GS9020A PIN NO_EDH LOGIC OPR HOST BIT NO_EDH Some input data streams may lack the EDH packet. In such cases, the NO_EDH output pin or HOSTIF read table bit is asserted HIGH. If only a few fields lack the EDH packet, the NO_EDH pin/bit will be asserted only for those fields. In determining if the input data stream contains an EDH packet, the GS9020A looks for two things. First the presence of an ANC packet with the header 000 3FF 3FF 1F4 and second that the ANC header is in the right spot for the video standard detected. The NO_EDH signal is a logical NAND of these two cases. If either one is false, the NO_EDH flag is set. 3.8 ERRORED FIELD COUNTER PIN LOGIC OPR HOST BIT ERRORED FIELD COUNTER CLR[1:0] ERROR SENSITIVITY BITS In receive mode, a UES flag is set HIGH in the outgoing EDH packet if the corresponding UES flag was HIGH in the incoming packet or if the corresponding V bit was LOW. (For example, if the incoming Active Picture V bit is LOW, the outgoing Active Picture UES bit will be HIGH). If there is no EDH packet in the incoming data, all three UES flags (ANC, AP, FF) are set HIGH. The device has a 24 bit ERRORED FIELD COUNTER. The counter increments by one on the occurrence of one or more error flags in an OUTGOING EDH packet. The error flags that can increment the counter are user-selectable through the 16 ERROR SENSITIVITY bits in the HOSTIF write table. The error flag SENSITIVITY bits are active LOW, so that if a particular sensitivity bit is set LOW, the counter is sensitive to errors of that type in the OUTGOING EDH packet. The EDH_CHKSM sensitivity bit is active HIGH. There are four modes of counter operation. The mode is set through 2 bits in the HOSTIF write table, denoted CLR1 and CLR0. 13 of 31 19922 - 3 CLR1 0 0 1 1 CLR0 0 1 0 1 MODE OF OPERATION Normal Reset Counter to Zero Auto Reset Hold Counter at Zero 3.10 Flag Port PIN F_R/W S[1:0] FL[4:0] LOGIC OPR HOST BIT GS9020A > OVERWRITE VALUES In "Normal" mode the counter operates as previously discussed, such that the counter increments on detection of any error for which the sensitivity flags are set HIGH. If “Reset Counter to Zero” mode is selected, the counter is reset to zero and begins counting again. The mode of operation will immediately return to 00 (normal mode) once the counter resets. In "Auto Reset" mode, the counter behaves in the normal fashion, except that it resets to zero every time a HOSTIF read of the lowest 8 bits of the error counter (address 17) is performed. This functionality allows the chip to count the number of errors since the last read. The “Hold Counter at Zero” mode instantly freezes the counter at zero until it is moved into one of the other modes. 3. 9 INTERRUPT Signal In addition to the HOSTIF tables, the EDH error flags can also be read and written via the synchronous flag port. The five flag port pins, FL[4:0], allow access to all 15 error flags. The select pins S[1:0] control which flags are read/written as outlined below. If the flag port is not going to be used, it is best to set F_R/W high, leave FL[4:0] unconnected, and set S[1:0] to any value desired (but not floating). 3.10.1 Write Mode PIN INTERRUPT LOGIC OPR HOST BIT When the F_R/W pin is LOW, the flag port is in write mode and the FL[4:0] pins are configured as inputs. After writing to the flag port, the GS9020A inserts the written flags into the next outgoing EDH packet. Note that external flag overwriting via the flag port takes precedence over HOSTIF overwriting but the flag port writing only affects the next outgoing EDH packet. Following this, if the flag port is not written to again, flag operation is returned to normal EDH functionality (unless it is being overwritten through the HOSTIF). The data present on the FL[4:0] output pins, as controlled by the S[1:0] pins, is summarized below. Write Mode, F_R/W = 0 S[1:0] 00 01 10 FL4 FF UES AP UES ANC UES IN/OUT FL3 FF IDA AP IDA ANC IDA APV FL2 FF IDH AP IDH ANC IDH FFV FL1 FF EDA AP EDA ANC EDA 0 FL0 FF EDH AP EDH ANC EDH 0 An interrupt output pin (INTERRUPT) is also available on the GS9020A. The INTERRUPT output is asserted LOW for each field that contains errors in the outgoing EDH packet. The sensitivity flags used for the 24 bit errored field counter also apply to the interrupt signal. As a result, the interrupt can be made sensitive to any particular flags. The INTERRUPT signal is stable after an EDH packet exits the device and before the subsequent EDH packet enters the device as shown in Figure 11. If the STICKY OUT control bit is asserted HIGH, the interrupt remains asserted LOW until a HOSTIF read is performed on the flag that caused the interrupt. The INTERRUPT output is an open drain output and as a result requires an external pull-up resistor. A 10k resistor value is recommended. If this output is not used, a pullup resistor is not required. 11 In addition to overwriting the 15 error flags, the outgoing validity bits for the active picture (APV) and full field (FFV) can be overwritten via the flag port. The IN/OUT bit has no effect on writes to the error flags. IN/ OUT is a control bit used to determine if the flags read from the flag port during flag port read cycles represent incoming or outgoing EDH flags. If this bit is set HIGH, all subsequent reads are from the incoming EDH packet. If this bit is set LOW, then all subsequent reads are from the updated outgoing packet. When the IN/OUT bit is written to, the value remains latched until it is re-programmed. The IN/ OUT bit is set LOW upon reset of the chip. 14 of 31 19922 - 3 3.10.2 Read Mode When the F_R/W pin is HIGH, the flag port is in read mode and the FL[4:0] pins are configured as outputs. The data present on the FL[4:0] output pins, as controlled by the S[1:0] pins, is summarized below. Read Mode, F_R/W = 1 S[1:0] 00 01 10 FL4 FF UES AP UES ANC UES FL3 FF IDA AP IDA ANC IDA APV FL2 FF IDH AP IDH ANC IDH FFV FL1 FF EDA AP EDA ANC EDA S FL0 FF EDH AP EDH ANC EDH At t5, the F_R/W pin is sampled HIGH, indicating a read operation. Also at this time, the device reads in the information on the S[1:0] pins. Upon sampling a read operation, the device will begin driving the FLAG PORT after a delay, tFEN (see Figure 12c), with invalid data. The requested information is output on the FL[4:0] pins on the subsequent clock, t6, (plus an output delay time, see AC timing table and Figure 3). That is, there is a one clock latency between sampling of the S[1:0] pins and when the corresponding output information is presented on the FL[4:0] pins. In this example, the S[1:0] pins begin at "00" and are incremented each clock cycle to read all the error flags, EDH_CHKSM, validity, and S bits. The FLAG PORT is synchronous to the internal parallel clock and hence adequate timing for writing must be provided as indicated in the AC timing information and Figure 2. FLAG PORT read/write cycles, relative to the data stream, should take place as outlined in section 5.3 (HOST INTERFACE READ/WRITE TIMING). 3.11 CRC_MODE and FLAG_MAP Mode GS9020A 11 EDH_ CHKSUM Note that the 15 error flags can be read from the incoming or outgoing EDH packet (see IN/OUT control bit above). However, the EDH_CHKSM flag available on pin FL4 when S[1:0] = 11 is only valid if IN/OUT is LOW. Also, the APV and FFV bits available on pins FL[3:2] when S[1:0] = 11 are only valid when IN/OUT is HIGH (that is, the validity bits are always read from the incoming EDH packet). The S bit is available regardless of the state of the IN/OUT bit. 3.10.3 FLAG PORT Read/Write Timing PIN CRC_MODE FLAG_MAP LOGIC OPR HOST BIT OR FLAG_MAP Figure 12a shows a FLAG PORT write cycle followed by a FLAG PORT read cycle and illustrates the read/write timing requirements. Note that the signals are not latched in exactly on the rising edge of PLCKOUT (as described in Note 2 of the AC electrical table), but are shown as being latched in on the rising edge for simplicity only. A write cycle is initiated by changing the F_R/W signal from HIGH to LOW. The first time the device samples the F_R/W LOW (at t0) it is instructed to stop driving the FL[4:0] pins. On each subsequent clock cycle (and F_R/W LOW) the device latches in the data present on S[1:0] and FL[4:0] (at t1, t2, t3 and t4). In this example, the S[1:0] pins begin at "00" and are incremented each clock cycle to update all the error flags, validity bits, and the IN/OUT control bit. Note that if a write cycle is performed to update, say the FF error flags (S[1:0] = 00), only the FF flags are updated, and the others are unaffected. A delay time, tFDIS, is necessary to change the FL[4:0] pins from output mode to input mode as defined in the AC timing table and shown in Figure 12b. The external controller can begin to drive the FL[4:0] bus after this delay time. A simple way to allow for this is to wait one clock cycle before starting to drive the FL[4:0] port and thus prevent bus contention (but set the S[1:0] inputs when F_R/W goes LOW so that flags are not unintentionally affected). A common configuration is to have an input EDH chip that checks for errors at the input of a piece of equipment, followed by a processing block that manipulates the data, followed by an output EDH chip that updates the CRC values in the EDH packet before the data exits the equipment. Because the processing block changes the data values, the CRC values in the EDH packet no longer represent the data stream. The output EDH chip updates the CRC values to correctly reflect the newly modified data. To prevent the output EDH chip from indicating erroneous CRC errors on each field, the GS9020A has two special modes of operation, CRC_MODE and FLAG_MAP mode. 3.11.1 CRC_MODE In CRC_MODE, the CRC values in the EDH packet are updated by the chip but the error flags are preserved and unaltered, unless they are overwritten via the HOSTIF or the FLAG PORT. This mode should be used by the output EDH chip to prevent the newly processed data from creating misleading EDH errors due to CRC mismatches. The device is placed in CRC_MODE by asserting the CRC_MODE pin HIGH. 15 of 31 19922 - 3 CRC_MODE is applicable when the processing circuitry does not corrupt the EDH packet, as illustrated in Figure 13a. In this configuration, the input EDH chip operates in normal mode while the output EDH chip is in CRC_MODE. In this scenario, the input IC receives the EDH packet and does normal EDH processing. GS9020A The output IC updates the EDH packet with new CRC values but passes the EDH flags through unaltered. Because of this, erroneous EDH flag handling by the second EDH chip is not performed. 3.11.2 FLAG_MAP Mode used to route the EDH flags from an input EDH chip around the processing core and write them to an output EDH chip. In this configuration, the input IC is in FLAG_MAP mode. It receives the EDH packet, does normal EDH processing and transfers the new EDH flags to the output IC. The output IC, which is not in FLAG_MAP mode but is in write mode (FLAG_MAP and F_R/W stay LOW) receives these flags as they are written to it by the EDH chip. The output EDH chip then updates the EDH packet with the new CRC values and inserts the preserved EDH flags that have been transferred from the input IC. A diagram of this can be found in Figure 13b. Because the flags are output as soon as they are decoded, the maximum processing latency supported between the two EDH chips is the number of clock cycles in the shortest field of the standard minus 15 clock cycles. For example, D1 has one field of 262 x 1716 = 449592 clock cycles, and one field of 263 x 1716 = 451308 clock cycles. Thus the maximum latency for D1 is 449592 - 15 = 449577 clock cycles. Any additional latency requires that the flags be delayed before they can be piped to the output chip. Since writing to the flag port takes precedence over the HOSTIF writing, if any of the flags need to be forced at the output EDH chip, external logic in the routing path must be added. Alternately, the HOSTIF of the EDH chip can be used to perform any additional flag masking. 3.12 BYPASS_EDH Processing In FLAG_MAP mode, the FLAG PORT is used to read EDH flags from the GS9020A and write them to another EDH chip. To enable FLAG_MAP mode, the FLAG_MAP mode pin and the F_R/W pin must be asserted HIGH (set F_R/W at least one cycle ahead of FLAG_MAP). After a delay of tFEN, the FL[4:0] and S[1:0] pins of the FLAG PORT become outputs and can be connected to the chip which you wish the GS9020A to write the FLAG data to. In this mode the GS9020A automatically increments the value of S[1:0] and subsequently displays the appropriate flags on the FL[4:0] port, synchronous to the rising edge of PCLKOUT. This is illustrated in Figure 12d. Figure 12d displays three properties of the FLAG PORT in FLAG_MAP mode. First, each data is present on the FLAG PORT for two clock cycles to eliminate any setup time violations that might occur due to clock data skew between chips placed far apart. However, the designer must still ensure that the hold time is satisfied. Second, the S[1:0] pins never cycle to the value of "11" in FLAG_MAP mode since the values contained in the FL[4:0] register when S[1:0] ="11" are not considered EDH flags. Also, the chip cycles S[1:0] in the sequence "01", "00", "10" since this is the order in which the flags are stored and subsequently decoded from the EDH packet. Finally the S[1:0] pins only change value after receipt of an EDH packet and are thus static between packets. During this inter-packet time, the S[1:0] pins display a value of "01" and the FL[4:0] pins display the ANC EDH flags from the preceding EDH packet. For reliable data output on the FLAG PORT, switching the FLAG_MAP pin when an EDH packet is exiting the device is not advised. Also, if the EDH core is bypassed by asserting the BYPASS_EDH pin HIGH, the flag port will always display zeros. This is because the incoming flags (which will be decoded and written to the HOSTIF table) will not be updated to reflect the condition of the input data, and as a result no outgoing flags will be generated (the FLAG PORT only displays the outgoing EDH flags). FLAG_MAP mode can be used to write EDH flags to any chip, the most common use being applicable when the processing circuitry following the EDH chip corrupts the EDH packet. In this case, the FLAG_MAP mode can be PIN BYPASS_EDH LOGIC OPR OR HOST BIT BYPASS_EDH EDH processing can be bypassed by asserting the BYPASS_EDH pin or HOSTIF write table bit HIGH. When bypassed, EDH packets pass through the chip unaltered. Overwriting information in the EDH packet via the HOSTIF write table or the FLAG PORT has no effect. Data processing in the chip (as described below) can still occur even if BYPASS_EDH is asserted. In this case, valid incoming error flags can be read via the I²C or parallel port interface. However, reading outgoing error flags via the host port or the flag port returns values of 0. 16 of 31 19922 - 3 4. DATA PROCESSING BLOCK 4.2 ITU-R-601 Clipping The GS9020A contains advanced data processing features that can simplify system design requirements. These include: • • • • • TRS Blanking, ITU-R-601 Clipping Data Blanking, TRS Insertion, and ANC Header updating PIN LOGIC OPR HOST BIT 601_CLIP This feature operates on the active picture portion (as defined in RP165) of the data stream only. When the 601_CLIP bit of the HOSTIF write table is asserted HIGH, the device remaps all reserved data words in the active picture to values compliant with ITU-R-601. That is, 000-003 is clipped to 004 and 3FCH-3FFH is clipped to 3FBH. 4.3 Data Blanking GS9020A It is important to note that these processing functions occur in the GS9020A in the order listed above. When implementing applications which use the EDH core (ie. BYPASS_EDH set LOW), TRS blanking, data blanking, and TRS insertion will indicate a downstream FF/AP EDH error when a 3FCH-3FFH input data value is blanked out or overwritten to a value less than 3FBH. As such, users may wish to disable data blanking, TRS blanking and TRS insertion by setting the BLANK_EN pin HIGH, the CLIP_TRS pin LOW, and leaving the corresponding host interface bits at their power-on default values when implementing applications which use the EDH core. 4.1 TRS Blanking PIN BLANK_EN LOGIC OPR AND HOST BIT BLANK_EN Asserting the BLANK_EN pin or the corresponding HOSTIF write table bit LOW causes the corresponding input data to be forced to blanking levels. This is a dynamic control allowing the user to individually select which data words are to be blanked. TRS and EDH insertion occurs after data blanking so if all these features are being used, the output data stream continues to have TRS words and EDH packets present, even if the BLANK_EN is constantly held LOW. The outgoing EDH packet will contain the correct CRC values for the blanked fields since the CRC values are calculated and inserted just prior to the data exiting the device. The blanking values in hexi-decimal notation for each standard are as follows: NTSC/PAL 4:2:2 NTSC 4ƒsc PAL 4ƒsc NTSC/PAL 4:4:4:4 200 040 200 040 (CB:Y:CR:Y) 0F0 100 040 040 040 040 (B:G:R:A) 200 040 200 040 (CB:Y:CR:A) PIN LOGIC OPR HOST BIT TRS_BLANK When asserted HIGH, TRS_BLANK (HOSTIF write table) will blank out any incorrectly positioned TRS words with respect to the flywheel. The blanking values used will be appropriate for the detected video standard as described below in the Data Blanking section. When TRS_INSERT is enabled and TRS_BLANK is not, there may be 4 TRSs per line in the outgoing data stream during a standard switch. Similarly, if TRS_BLANK is enabled and TRS_INSERT is not, then there may be 0 TRS per line during a switch. In most applications, these features should be either both enabled or both disabled to maintain only two TRSs per line. TRS blanking will function incorrectly if the flywheel is disabled. Thus if the flywheel is disabled the TRS_BLANK function should be disabled as well. Note that the device must first detect the incoming standard in order for the proper blanking values to be inserted. 4.4 TRS Insertion TRS words, based on the internal flywheel, can be inserted into the outgoing data stream by asserting HIGH the TRS_INSERT bit of the HOSTIF write table. Note that for proper TRS insertion, the incoming standard must be detected and the flywheel synchronized. That is, the GS9020A does NOT provide proper TRS insertion for unformatted video data (video without TRS words). 17 of 31 19922 - 3 5.0 HOST INTERFACE TABLES PIN LOGIC OPR HOST BIT TRS_INSERT PIN HOSTIF_MODE LOGIC OPR HOST BIT In the case where the input signal disappears, TRSs will continue to be inserted based on the last detected standard. Further, if a TRS is already in the correct location, it will be overwritten which may have the effect of correcting the TRS-ID word. TRS insertion will function incorrectly if the flywheel is disabled. Thus if the flywheel is disabled the TRS_INSERT function should be disabled as well. 4.5 Clipping And TRS Blanking/Insertion GS9020A The HOST INTERFACE TABLES (HOSTIF) refer to memory locations within the GS9020A which store functional information about the device. There are two tables, a write table and read table. The write table is organized into 15 word locations (each 8 bits wide) as shown in Table 2 and is used to set various configuration/flag bits. The read table is organized into 23 word locations (each 8 bits wide) as shown in Table 3 and is used to read status information from the device. The HOSTIF tables can be accessed via an I²C (InterIntegrated Circuit) serial interface or an 8-bit parallel interface. The HOSTIF_MODE pin selects which interface is used. If the HOSTIF_MODE pin is HIGH, the HOSTIF operates in I²C mode. If the HOSTIF_MODE pin is LOW, the HOSTIF operates in parallel mode. Note that many bits stored in the tables are also available as device pins. Bits in the write table that have a default value of 0 are logically ORed with the corresponding pin. Write table control bits VBLANKS/L and BLANK_EN, which have a default value of 1, are logically ANDed with the corresponding pin. However, write table control bit ANC_CHKSM, which has a default value of 1, is logically ORed with the corresponding pin. Therefore, to use the ANC_CHKSM pin, the ANC_CHKSM control bit must first be set to 0. If the HOST interface is not going to be used, the best way to set the related pins is as follows: HOSTIF_MODE = LOW CS = HIGH R/W = HIGH PIN CLIP_TRS LOGIC OPR OR HOST BIT 601_CLIP TRS_BLANK TRS_INSERT Asserting the CLIP_TRS pin HIGH turns on three features described above: ITU-R-601 Clipping, TRS Blanking, and TRS Insertion These three functions can also be turned on individually through the HOSTIF as described above. THE CLIP_TRS pin is logically ORed with each of the three bits from the HOSTIF table. As a result, as long as the CLIP_TRS pin is asserted, these functions cannot be turned off via the HOSTIF. 4.6 Ancillary Header A/D = DON'T CARE (BUT NOT FLOATING) PIN LOGIC OPR HOST BIT ANC_HEADER P[7:0] = N/C Updating of the ANC headers can occur to facilitate 8-bit to 10-bit conversion. If the ANC_HEADER bit of the HOSTIF write table is set HIGH, all 3FC-3FF data values corresponding to component ANC headers are remapped to 3FF in the output data stream. For example, if 8 bit data is input to the device, the ANC header of 00, FF, FF will appear as 000, 3FC, 3FC and will be remapped to 000, 3FF, 3FF by the GS9020A. 18 of 31 19922 - 3 5.1 I²C Serial Interface PIN SCL SDA A[2:0] LOGIC OPR HOST BIT B) Signals are "strobed" into/out of the parallel port on the falling edge of the CS signal. Setup and hold times, as defined in the AC timing tables, are relative to this edge and must be met (see Figure 14a) C) The GS9020A drives the P[7:0] bus when the R/W pin is HIGH and the CS pin is LOW. At all other times, the P[7:0] port is in a high impedance state. The host interface enable and disable times are shown in Figure 14b and are specified in the AC timing information. In this figure, the rising/falling edges of R/W and CS are not aligned to illustrate that the state of the P[7:0] I/Os is only a combinatorial function of the R/W and CS pins. A write cycle to the parallel interface is shown in Figure 14c. The starting address of the operation is written to the chip by putting the R/W pin LOW (indicating write) and the A/D pin high (indicating ADDRESS). At t0, the falling edge of CS strobes in the information. Following this, the A/D line should be asserted LOW indicating data. The R/W line remains LOW indicating a write operation and at t1 the data is strobed into the device. A read example follows the write cycle. Note that the read cycle begins with a write operation to indicate the starting address. At t2, R/W is LOW (indicating write), A/D is HIGH (indicating address) and P[7:0] represent the starting address for the read cycle. After sufficient hold time, the microcontroller releases the P[7:0] bus and the R/W is asserted HIGH to indicate a read operation. At t3, the CS is asserted low causing the GS9020A to present the required data on the P[7:0] bus. If two consecutive data read or write operations are performed, the device will automatically increment the address. However, for a completely random-access operation, the address can be specified prior to every data read or write operation. 5.3 Host Interface Read/Write Timing GS9020A The I²C interface consists of a bi-directional serial data pin (SDA) and a serial clock input pin (SCL). In addition, 3 input pins, A[2:0] are provided to assign the chip one of eight possible I²C addresses (0001A2A1A0). During an I²C write operation, the first byte written to the chip (after the device has been addressed) is interpreted as the starting HOSTIF write table address for the communication. The next byte is interpreted as data to be written to this address. The address then automatically increments so that the following bytes are written to subsequent addresses. When executing a read operation, a write must be performed first to load the starting address. After this, bytes read from the chip will begin at this address and will autoincrement. If the read operation is halted and communication with the chip is later established for another read, the chip will resume reading at the next HOSTIF memory address. In I²C mode, P[7:5] and A/D must be set LOW while R/W and CS must be set HIGH. 5.2 Parallel Interface PIN P[7:0] A/D R/W CS LOGIC OPR HOST BIT The asynchronous parallel interface consists of an 8-bit multiplexed address/data bus (P[7:0]), a chip select pin (CS), a read/write pin (R/W), and an address/data pin (A/D). The following should be noted when interfacing to the parallel port: A) Read/Write cycles via the parallel interface are completely independent and asynchronous to the parallel clock PCLKOUT. Figure 15 illustrates valid times for reading/writing information from the HOSTIF tables. It represents two fields of video data entering and exiting the GS9020A. The relative position of the EDH packet in the data stream is also shown. (Note that the EDH packet entering the device at t0, EDH F0, represents the EDH information from the previous field, FIELD 0). It is safe to read or write EDH information at least two lines after an EDH packet exits the chip but before the subsequent EDH packet enters the chip. Reading during the time interval shown will show values from EDH F0. Writing during the time interval shown will affect EDH F1. Note that the above read/write timing should also be observed when reading/writing flag information via the FLAG PORT. 19 of 31 19922 - 3 6.0 RESET PIN RESET LOGIC OPR HOST BIT Setting the RESET input pin LOW re-initializes the internal control circuitry including returning all HOST interface programming values to their original default values. An internal power-on-reset cell is also present in the device so that device initialization occurs on power-up. Figure 16a illustrates the reset circuitry. The internal power-on reset circuit of the GS9020A is sensitive to the rise time of the power supply, hence an external power on reset chip or board level reset line is strongly recommended. When using this technique, the user must ensure that a minimum pulse width of 100ns is present on the reset line. In applications where a board-level reset is not available, a circuit similar to figure 16b can be used to ensure correct reset on power-up. The RESET pin will typically take 1.4ms to reach 2.5V on power up, but can take longer for power supplies with slower rise times. A bleed resistor such as the one shown (20k) will assist the capacitor to discharge once power is removed. The user should allow the capacitor to discharge to at least 0.5V before power is reapplied, to permit a full internal reset. The time taken by the RESET pin to reach 0.5V on power down, is dependent upon the fall time of the power supply. GS9020A 20 of 31 19922 - 3 TABLE 2: GS9020A Host Interface Write Table 7 0 WRITE Table STICKY IN 1 0 ADDRESS STICKY OUT VBLANKS/L BLANK_EN FF IDA AP IDA FF IDA AP IDA FF IDA AP IDA RW1 B6 RW2 B4 RW3 B2 RW5 B6 RW6 B4 RW7 B2 0 0 0 0 0 0 0 0 0 0 0 0 0 6 CLR1 STD SEL ANC_HEADER 0 0 0 0 5 CLR0 S BYPASS_EDH FF EDA AP EDA FF EDA AP EDA FF EDA AP EDA RW1 B4 RW2 B2 RW4 B6 RW5 B4 RW6 B2 FFV 0 0 1 0 0 0 0 0 0 0 0 0 0 0 0 4 SWITCH FLYW STD3 FLAG_MAP FF EDH AP EDH FF EDH AP EDH FF EDH AP EDH RW1 B3 RW3 B7 RW4 B5 RW5 B3 RW7 B7 APV 0 0 0 0 0 0 0 0 0 0 0 1 0 0 3 FLYWDIS STD2 ANC_CHKSM ANC UES AND EDA ANC UES ANC EDA ANC UES ANC EDA RW1 B2 RW3 B6 RW4 B4 RW5 B2 RW7 B6 0 0 0 0 0 0 0 0 0 0 0 0 0 0 2 0 STD1 TRS_INSERT ANC IDA ANC EDH ANC IDA ANC EDH ANC IDA ANC EDH RW2 B7 RW3 B5 RW4 B3 RW6 B7 RW7 B5 0 0 0 1 0 STD0 0 CONFIGURATION 0 0 1 2 601_CLIP FF UES AP UES FF UES AP UES FF UES AP UES RW1 B7 RW2 B5 RW3 B3 RW5 B7 RW6 B5 RW7 B3 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 1 0 1 3 0 0 0 TRS_BLANK 1 0 0 OVERWRITE VALUES 1 1 0 4 5 FF IDH AP IDH FF IDH AP IDH RW1 B5 RW2 B3 RW4 B7 RW5 B5 RW6 B3 RO_CTRL OVERWRITE CONTROL 0 0 0 0 0 0 0 0 0 6 ANC IDH 0 0 1 0 0 0 0 0 7 ERROR SENSITIVITY BITS 8 ANC IDH EDH_CHKSM RW2 B6 RW3 B4 RW4 B2 RW6 B6 RW7 B4 0 9 RESERVED (OUTGOING) 10 GS9020A 21 of 31 11 12 13 14 15 NOTE: 1. Superscripts denote default settings upon reset. 19922 - 3 GS9020A TABLE 3: GS9020A Host Interface Read Table 7 F2 NO_EDH FF UES AP UES FF UES AP UES b15 b7 b15 b7 b15 b7 b15 b7 b23 b15 b7 RW1 B7 RW2 B5 RW3 B3 RW5 B7 RW6 B5 RW7 B3 RW7 B2 RW6 B4 RW5 B6 RW3 B2 RW4 B7 RW5 B5 RW6 B3 0 RW2 B4 RW2 B3 RW1 B6 RW1 B5 b6 b5 b4 RW1 B4 RW2 B2 RW4 B6 RW5 B4 RW6 B2 0 b14 b13 b12 b22 b21 b20 b6 b5 b4 b14 b13 b12 b11 b3 b19 b11 b3 RW1 B3 RW3 B7 RW4 B5 RW5 B3 RW7 B7 0 b6 b5 b4 b3 b14 b13 b12 b11 b6 b5 b4 b3 b14 b13 b12 b11 b10 b2 b10 b2 b10 b2 b18 b10 b2 RW1 B2 RW3 B6 RW4 B4 RW5 B2 RW7 B6 0 b6 b5 b4 b3 b2 b14 b13 b12 b11 b10 AP IDA AP IDH AP EDA AP EDH ANC EDA FF IDA FF IDH FF EDA FF EDH ANC UES ANC IDA ANC EDH b9 b1 b9 b1 b9 b1 b9 b1 b17 b9 b1 RW2 B7 RW3 B5 RW4 B3 RW6 B7 RW7 B5 0 AP IDA AP IDH AP EDA AP EDH ANC EDA ANC EDH FF IDA FF IDH FF EDA FF EDH ANC UES ANC IDA EDH_CHKSM TRS_ERR FFV APV 0 0 0 ANC IDH 0 ANC IDH 0 b8 b0 b8 b0 b8 b0 b8 b0 b16 b8 b0 RW2 B6 RW3 B4 RW4 B2 RW6 B6 RW7 B4 0 F1 F0 S STD3 STD2 STD1 STD0 6 5 4 3 2 1 0 19922 - 3 READ Table ADDRESS CONFIGURATION 1 2 INCOMING ERROR FLAGS 3 4 OUTGOING ERROR FLAGS 5 6 INCOMING 7 FF CRC 8 OUTGOING 9 FF CRC 10 INCOMING 11 AP CRC 12 22 of 31 OUTGOING 13 AP CRC 14 ERRORED FIELD COUNTER 15 16 17 18 RESERVED WORDS (INCOMING) 19 20 21 22 23 SDI CLOCK SYNCHRONOUS INPUTS SERIAL DATA PCLKOUT tSS tSH t1 VALID t2 GS9020A Fig. 1 Serial Data Input Setup & Hold Times Fig. 2 Input Setup & Hold Times (Synchronous Inputs) VDD, SDI RPULLUP SYNCHRONOUS OUTPUTS tOH PCLKOUT tOD DATA VALID tOS SDI VDD, SDI RPULLUP SDI Fig. 3 Output Delay & Hold Times (Synchronous Outputs) Fig. 4 Serial Data & Clock Input Circuit VDD GS9025A SDO SDO VDD GS9020A VDD, SDI SDI SDI VDD, SDI VDD, SCI SCI SCI VDD, SCI VDD VDD SDO SDO SCO SCO Fig. 5 Interfacing the GS9020A to the GS9025A Fig. 6 Serial Data Output Circuit VDD GS9025A GS9020A VDD, SDI Z0 SDI SDO SDI ΙSDO + VDD, SDI VDIFF OUT 2Z 0 VDD, SCI SCI SCI SDO VDD, SCI VDIFF OUT = ΙSDO x 2Z0 SDOMODE GS9028 SDO SDO SDI SDO SCO SCO GS9025 SDI Fig. 7 Interfacing the GS9020A to the GS9028 23 of 31 19922 - 3 tOS tOH tOD tOS PCLKOUT DOUT [9:0] 3FF 000 000 EAV 3FF 000 000 SAV GS9020A F [2:0] V H Fig. 8a FVH Timing for Component Video tOH tOS tOD tOS PCLKOUT DOUT [9:0] 3FF 000 000 000 TRS-ID F [2:0] H Fig. 8b F and H Timing for Composite Video PCLKOUT DOUT[9:0] 3FF 000 000 EAV ID 3FF 000 000 SAV ID FIFO_RESET Fig. 9a FIFO_RESET Pulse Timing for Component Signals (FIFOE/S = 1) PCLKOUT DOUT[9:0] 3FF 000 000 EAV ID 3FF 000 000 SAV ID FIFO_RESET Fig. 9b FIFO_RESET Pulse Timing for Component Signals (FIFOE/S = 0) 24 of 31 19922 - 3 PCLKOUT DOUT[9:0] 3FF 000 000 000 TRS ID FIFO_RESET GS9020A Fig. 9c FIFO_RESET Pulse Timing for Composite Signals (FIFOE/S = 0 or 1) PCLKOUT DOUT[9:0] 000 3FF 3FF DID UDW UDW CS ANC_DATA Fig. 10a ANC_DATA Timing for Component Signals PCLKOUT DOUT[9:0] 3CF DID DBN DC UDW UDW CS ANC_DATA Fig. 10b ANC_DATA Timing for Composite Signals SDI/SDI EDH EDH DOUT[9:0] E D H E D H INTERRUPT TRANSITION POINT UNKNOWN TRANSITION POINT UNKNOWN Fig. 11 INTERRUPT Timing 25 of 31 19922 - 3 WRITE CYCLE READ CYCLE { XX FF AP ANC S11 t5 00 t6 01 t7 10 t8 11 F_R/W tFEN FL [4:0] PCLKOUT { F_R//W FL[4:0] XX FF AP ANC S11 GS9020A PCLKOUT t0 S[1:0] XX t1 00 t2 01 t3 10 t4 11 Fig. 12a Flag Port READ/WRITE Timing F_R/W FL [4:0] tFDIS PCLKOUT Fig. 12b Flag Port Disable Time Fig. 12c Flag Port Enable Time PCLKOUT F_R/W FLAGMAP X FL[4:0] XX0 XX 1 XX 2 AP FF ANC ANC AP FF ANC S[1:0] XX 0 XX 1 XX 2 tFEN 01 00 10 10 01 00 10 Flags held at ANC between EDH packets Double clocking Fig. 12d Flag Port Timing in FLAG MAP MODE GS9020A or GS9021A CRC_MODE = 0 R/T = 1 (GS9021A) PROCESSING WHICH DOES NOT AFFECT THE EDH PACKET GS9021A CRC_MODE = 1 Fig. 13a Example of CRC_MODE Implementation 26 of 31 19922 - 3 GS9020A or GS9021A CRC_MODE = 0 FLAG MAP = 1 F_R/W = 1 R/T = 1 (GS9021A) PROCESSING CORRUPTS EDH PACKET GS9021A FLAG MAP = 0 F_R/W = 0 GS9020A FL [4:0] S [1:0] 7 Fig. 13b Example of FLAG_MAP Mode Implementation tHS tHH P [7:0] A/D R/W CS Fig. 14a HOSTIF Parallel Port Input Setup & Hold Times tHEN P[7:0] GS9020A DRIVING tHDIS R/W CS Fig. 14b HOSTIF Parallel Port Output Enable & Disable Times 27 of 31 19922 - 3 WRITE CYCLE READ CYCLE { ADDRESS DATA DATA t2 t3 t4 FIELD 2 EDH F1 E D H F1 VALID TIME TO READ/WRITE EDH INFORMATION TO/FROM GS9020 VDD VDD 5V ~1.4 mS 2k 0V RESET t RESET { P[7:0] ADDRESS DATA IN R/W GS9020A A/D CS t0 t1 Fig. 14c HOSTIF Parallel Port READ/WRITE Cycles FIELD 0 FIELD 1 SDI/SDI EDH F0 t0 DOUT[9:0] E D H F0 2 LINES Fig. 15 Host Interface READ/WRITE Timing tMAX = 25µs INTERNAL POWER on RESET CELL INTERNAL RESET SIGNAL RESET PIN tRESET Manual Reset Switch (Optional) 5V 1uF 20k 0V t Fig. 16a Reset Circuitry Fig. 16b Acceptable external reset circuit when a master reset is not available 28 of 31 19922 - 3 VCC GND VDD VCC C29 100n VCC VDD C1 10µ C2 100n C28 10µ R99 150 LED23 Q4 R101 R100 11K VDD VDD 77 76 75 74 73 72 71 70 69 68 67 66 65 VDD VDD VCC 2 VDD SDO SDO D1 10n 2 GND GND VDD VDDSDI SDI SDI VDDSDI VDDSCI SCI SCI VDDSCI VDD GND HOSTIF_MODE FIFOE/S CRC_MODE 18 C41 C20 10n 100n C23 100n 3p3 R31 1k8 15n C26 C25 VDD 10n 100n C43 R25 365 19 20 P7 P6 P5 3 VDD 4 5 6 Z0 = 75 8 9 Z0 = 75 10 11 A/M VDD SS0 SS1 SS2 16 VCC 17 VCC 22 1 15 2 D2 14 13 VDD 12 7 VDD 1 37 36 35 34 VDD SGND SVDD GND C40 1 CLIP_TRS BLANK_EN SDOMODE VCC C10 4.7n SMPTE VCC ANC_DATA VBLANKS/L VDD TRS_ERROR 11K 64 63 62 F2 F1 F0 H VCC 38 C8 10n ANC_CHKSM VBLANKS/L V D9 60 D8 59 D7 58 D6 57 D5 56 D4 55 D3 54 D2 53 61 D9 D8 D7 VIDEO DATA D6 & CLOCK D5 OUTPUTS D4 D3 D2 D1 VDD ANC_DATA 80 TRS_ERR 79 78 VEE 2 DDI VCC75_2 VCC_EQD VEE_EQD SDI SDI VCC_EQA VEE_EQA CD-ADJ AGCVEE1 RVCO12 AGC+ 13 V CC 14 VEE 15 LF+ 16 LFS 17 LFRVCO+ CBG 3 4 5 6 7 8 9 VCC J3 Z0 = 75 R20 C13 10n C11 10n VCC75_1 44 NC.(OEM) 43 SMPTE 42 DDI GS9025A CLK_EN 1 A/D 41 SSI-CD 40 39 LOCK COSC VCC VEE BYPASS_EDH C9 10n FLAG_MAP 18 19 20 L7 15nH 21 VCC C21 10n C24 21 SCL/P4 22 SDA/P3 23 A2/P2 24 A1/P1 25 A0/P0 26 R/W 27 A/D 28 CS 29 VDD 30 GND 31 RESET 32 NC 33 STD2 34 STD1 35 STD0 36 FL4 37 FL3 38 FL2 R24 2k C22 100n Fig. 17 GS9025A - GS9020A Schematic Diagram (basic operation schematic) GS9020A 39 FL1 40 FL0 29 of 31 IN2 75 GS9020A C12 10n D0 CLK VCC R21 75 R19 75 C14 10n C17 10n 10 R43 39 11 VEE 33 32 SDO 31 SDO 30 VEE 29 SCO 28 SCO 27 VEE 26 A/M 25 SS0 24 SS1 23 SS2 C19 100pF VDD VDD VCC D1 52 51 VDD 50 GND 49 D0 48 PCLKOUT 47 FIFO_RESET 46 NO_EDH 45 FLYWDIS 44 INTERRUPT 43 F_R/W 42 S0 41 S1 19922 - 3 R6 VDD VDD C28 10µ C29 100n VCC C42 100n R4 50 R7 50 VDD C5 Z0 = 50 R99 150 100n C3 1µ GS9028 VEE SDI SDI VCC RSET VEE SDO SDO 59 R 7 R 7 GS9020A LED23 USER SELECTED OPTIONS VBLANKS/L VCC VDD BYPASS_EDH ANC_CHKSM TRS_ERROR BLANK_EN ANC_DATA VDD 11K 11K VCC CLIP_TRS R100 FLAG_MAP SDOMODE Q4 R101 FVH INDICATION F2 F1 F0 H 62 H ANC_DATA 80 TRS_ERR 79 78 77 76 75 74 73 72 71 70 69 68 67 66 65 64 63 BLANK_EN CLIP_TRS BYPASS_EDH F2 F1 F0 VDD SDOMODE ANC_CHKSM VBLANKS/L SGND SVDD GND SDO SDO VDD VCC VCC75_1 44 NC.(OEM) 43 SMPTE 42 9 0n VCC SMPTE 4.7n 1 C40 10n 1 2 3 FLAG_MAP C10 C8 10n D1 VDD GND GND VDD VDDSDI SDI SDI VDDSDI VDDSCI SCI SCI VDDSCI VDD GND A/D 41 SSI-CD 40 39 LOCK 38 COSC 37 VEE 36 CLK_EN 35 VCC 34 VEE VDD 4 5 6 1 2 VCC 11 0n 3 4 5 6 7 VCC 17 0n 8 9 10 11 DDI DDI SDO SDO VEE 33 32 31 30 29 28 27 26 25 24 23 A/M SS0 VDD Z0 = 75 Z0 = 75 VCC75_2 VCC_EQD VEE_EQD SDI SDI VCC_EQA VEE_EQA CD-ADJ AGC12 AGC+ 13 V RVCO+ RVCO14 VEE 15 LF+ CBG 16 LFS 17 LFCC 7 8 9 10 11 12 VDD 13 14 15 16 17 VEE SCO GS9025A SCO VEE A/M SS0 SS1 SS2 VCC VDD GS9020A V D9 60 D8 59 D7 58 D6 57 D5 56 D4 55 D3 54 D2 53 D1 52 51 50 49 48 47 46 45 44 43 42 41 GND D0 S0 S1 FL0 2 SS1 D2 SS2 1 PCLKOUT FIFO_RESET NO_EDH FLYWDIS INTERRUPT F_R/W 21 SCL/P4 22 SDA/P3 31 RESET 32 NC 23 A2/P2 24 A1/P1 25 A0/P0 26 R/W 33 STD2 34 STD1 35 STD0 36 FL4 VDD HOSTIF_MODE FIFOE/S CRC_MODE P7 P6 P5 29 V DD 30 GND C19 100pF VCC C21 10n C22 100n 18 VEE 19 20 21 22 VCC C41 18 19 20 VCC R25 365 C20 100n C23 100n C43 100n 37 FL3 38 FL2 C24 3p3 R31 1k8 C26 15n STD2 STD1 STD0 SCL SDA A2 A1 A0 FL4 FL3 FL2 VDD I2C INTERFACE C25 10n Fig. 18 GS9025A - GS9020A - GS9028 Schematic Diagram (advanced operation schematic) 30 of 31 19922 - 3 FL1 39 FL1 40 FL0 10n 27 A/D 28 CS 61 2 V VDD PACKAGE DIMENSIONS 16.00 ±0.20 14.00 ±0.10 80 1 GS9020A 13˚ TYP 0.20 MIN 16.00 ±0.20 14.00 ±0.10 13˚ TYP 0.08 MIN RADIUS 1.0 REF 0.60 ±0.15 0.08/0.20 RADIUS 7˚ MAX 0˚ MIN 1.40 ±0.05 Dimensions in millimetres 80 pin LQFP 1.60 MAX 0.65 BSC 0.30 ±0.08 CAUTION ELECTROSTATIC SENSITIVE DEVICES DO NOT OPEN PACKAGES OR HANDLE EXCEPT AT A STATIC-FREE WORKSTATION DOCUMENT IDENTIFICATION DATA SHEET The product is in production. Gennum reserves the right to make changes at any time to improve reliability, function or design, in order to provide the best product possible. REVISION NOTES: Added lead-free and green information. GENNUM CORPORATION MAILING ADDRESS: P.O. Box 489, Stn. A, Burlington, Ontario, Canada L7R 3Y3 Tel. +1 (905) 632-2996 Fax. +1 (905) 632-5946 SHIPPING ADDRESS: 970 Fraser Drive, Burlington, Ontario, Canada L7L 5P5 GENNUM JAPAN CORPORATION Shinjuku Green Tower Building 27F 6-14-1, Nishi Shinjuku Shinjuku-ku, Tokyo 160-0023 Japan Tel: +81 (03) 3349-5501 Fax: +81 (03) 3349-5505 GENNUM UK LIMITED 25 Long Garden Walk, Farnham, Surrey, England GU9 7HX Tel. +44 (0)1252 747 000 Fax +44 (0)1252 726 523 Gennum Corporation assumes no responsibility for the use of any circuits described herein and makes no representations that they are free from patent infringement. © Copyright November 1997 Gennum Corporation. All rights reserved. Printed in Canada. 31 of 31 19922 - 3