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PI7C8152B Datasheet(PDF) 6 Page - Pericom Semiconductor Corporation |
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PI7C8152B Datasheet(HTML) 6 Page - Pericom Semiconductor Corporation |
6 / 90 page PI7C8152A & PI7C8152B 2-PORT PCI-TO-PCI BRIDGE ADVANCE INFORMATION Page 6 of 90 October 16, 2003 – Revision 1.11 4.4 VGA SUPPORT ........................................................................................................................... 41 4.4.1 VGA MODE......................................................................................................................... 41 4.4.2 VGA SNOOP MODE........................................................................................................... 42 5 TRANSACTION ORDERING.......................................................................................................... 42 5.1 TRANSACTIONS GOVERNED BY ORDERING RULES ........................................................ 42 5.2 GENERAL ORDERING GUIDELINES...................................................................................... 43 5.3 ORDERING RULES .................................................................................................................... 44 5.4 DATA SYNCHRONIZATION .................................................................................................... 45 6 ERROR HANDLING......................................................................................................................... 45 6.1 ADDRESS PARITY ERRORS .................................................................................................... 46 6.2 DATA PARITY ERRORS............................................................................................................ 47 6.2.1 CONFIGURATION WRITE TRANSACTIONS TO CONFIGURATION SPACE.......... 47 6.2.2 READ TRANSACTIONS .................................................................................................... 47 6.2.3 DELAYED WRITE TRANSACTIONS............................................................................... 48 6.2.4 POSTED WRITE TRANSACTIONS.................................................................................. 50 6.3 DATA PARITY ERROR REPORTING SUMMARY ................................................................. 52 6.4 SYSTEM ERROR (SERR_L) REPORTING ............................................................................... 56 7 EXCLUSIVE ACCESS ...................................................................................................................... 57 7.1 CONCURRENT LOCKS ............................................................................................................. 57 7.2 ACQUIRING EXCLUSIVE ACCESS ACROSS PI7C8152X...................................................... 57 7.2.1 LOCKED TRANSACTIONS IN DOWNSTREAM DIRECTION ..................................... 57 7.2.2 LOCKED TRANSACTION IN UPSTREAM DIRECTION .............................................. 59 7.3 ENDING EXCLUSIVE ACCESS ................................................................................................ 59 8 PCI BUS ARBITRATION................................................................................................................. 60 8.1 PRIMARY PCI BUS ARBITRATION......................................................................................... 60 8.2 SECONDARY PCI BUS ARBITRATION .................................................................................. 60 8.2.1 SECONDARY BUS ARBITRATION USING THE INTERNAL ARBITER.................... 60 8.2.2 PREEMPTION .................................................................................................................... 62 8.2.3 SECONDARY BUS ARBITRATION USING AN EXTERNAL ARBITER...................... 62 8.2.4 BUS PARKING.................................................................................................................... 62 9 CLOCKS ............................................................................................................................................. 63 9.1 PRIMARY CLOCK INPUT ......................................................................................................... 63 9.2 SECONDARY CLOCK OUTPUTS............................................................................................. 63 9.3 ASYNCHRONOUS MODE (PI7C8152B ONLY)....................................................................... 63 9.4 SYNCHRONOUS MODE............................................................................................................ 64 10 PCI POWER MANAGEMENT .................................................................................................... 64 11 RESET............................................................................................................................................. 65 11.1 PRIMARY INTERFACE RESET ................................................................................................ 65 11.2 SECONDARY INTERFACE RESET .......................................................................................... 65 11.3 CHIP RESET................................................................................................................................ 66 12 CONFIGURATION REGISTERS................................................................................................ 66 12.1 CONFIGURATION REGISTER.................................................................................................. 67 12.1.1 VENDOR ID REGISTER – OFFSET 00h......................................................................... 67 12.1.2 DEVICE ID REGISTER – OFFSET 00h .......................................................................... 67 12.1.3 COMMAND REGISTER – OFFSET 04h.......................................................................... 68 12.1.4 PRIMARY STATUS REGISTER – OFFSET 04h ............................................................. 69 |
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