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PI7C8150AND Datasheet(PDF) 97 Page - Pericom Semiconductor Corporation |
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PI7C8150AND Datasheet(HTML) 97 Page - Pericom Semiconductor Corporation |
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97 / 111 page ![]() PI7C8150A 2-PORT PCI-TO-PCI BRIDGE Page 97 of 111 APRIL 2006 – Revision 1.1 14.1.53 POWER MANAGEMENT DATA REGISTER – OFFSET E0h Bit Function Type Description 1:0 Power State R/W Indicates the current power state of PI7C8150A. If an unimplemented power state is written to this register, PI7C8150A completes the write transaction, ignores the write data, and does not change the value of the field. Writing a value of D0 when the previous state was D3 cause a chip reset without asserting S_RESET_L 00: D0 state 01: not implemented 10: not implemented 11: D3 state Reset to 0 7:2 Reserved R/O Read as 0 8 PME# Enable R/O Read as 0 as PI7C8150A does not support the PME# pin. 12:9 Data Select R/O Read as 0 as the data register is not implemented. 14:13 Data Scale R/O Read as 0 as the data register is not implemented. 15 PME status R/O Read as 0 as the PME# pin is not implemented. 14.1.54 CAPABILITY ID REGISTER – OFFSET E4h Bit Function Type Description 7:0 Capability ID R/O 00h: Reserved. 01h: PCI Power Management (PCIPM) 02h: Accelerated Graphics Port (AGP) 03h: Vital Product Data (VPD) 04h: Slot Identification (SI) 05h: Message Signaled Interrupts (MSI) 06h: Compact PCI Hot Swap 07h-255h: Reserved 14.1.55 NEXT POINTER REGISTER – OFFSET E4h Bit Function Type Description 15:8 Next Pointer R/O End of pointer (00h) 15 BRIDGE BEHAVIOR A PCI cycle is initiated by asserting the FRAME_L signal. In a bridge, there are a number of possibilities. Those possibilities are summarized in the table below: 06-0057 |
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