PI7C9X110 Pericom Semiconductor Corporation, PI7C9X110 Datasheet - Page 77

• Manufacturer Part Number: PI7C9X110
• Description: Pcie-to-pci Reversible Bridge
• Manufacturer: Pericom Semiconductor Corporation

7.5.7
7.5.8
7.5.9
7.5.10 PRIMARY CSR AND MEMORY 0 BASE ADDRESS REGISTER – OFFSET 10h
Pericom Semiconductor
CACHE LINE SIZE REGISTER – OFFSET 0Ch
PRIMARY LATENCY TIMER REGISTER – OFFSET 0Ch
PRIMARY HEADER TYPE REGISTER – OFFSET 0Ch
BIT
15:8
23:16
31:24
BIT
1:0
2
3
4
5
7:6
BIT
15:8
BIT
22:16
23
31:24
BIT
0
FUNCTION
Programming Interface
Sub-Class Code
Base Class Code
FUNCTION
Reserved
Cache Line Size
Cache Line Size
Cache Line Size
Cache Line Size
Reserved
FUNCTION
Primary Latency Timer
FUNCTION
Other bridge configuration
(non-transparent mode)
Single Function Device
Reserved
FUNCTION
Space Indicator
TYPE
TYPE
TYPE
TYPE
TYPE
RO /
RW
RW
RW
RW
RW
RO
RO
RO
RO
RO
RO
RO
RO
RO
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DESCRIPTION
Subtractive decoding of PCI-PCI bridge not supported
Reset to 00000000
Sub-Class Code
10000000: Other bridge
Reset to 10000000
Base class code
00000110: Bridge Device (transparent mode)
Reset to 00000110 (transparent mode)
DESCRIPTION
Bit [1:0] not supported
Reset to 00
1: Cache line size = 4 double words
Reset to 0
1: Cache line size = 8 double words
Reset to 0
1: Cache line size = 16 double words
Reset to 0
1: Cache line size = 32 double words
Reset to 0
Bit [7:6] not supported
Reset to 00
DESCRIPTION
8 bits of primary latency timer in PCI/PCI-X
FORWARD BRIDGE – RO with reset to 00h
REVERSE BRIDGE – RW with reset to 00h in PCI mode or 40h in PCI-X
mode
DESCRIPTION
Type-0 header format configuration (10-3Fh)
Reset to 0000000 (non-transparent mode)
0: Indicates single function device
Reset to 0
Reset to 00h
DESCRIPTION
0: Memory space
1: IO space
May 2008, Revision 2.6
PCIe-to-PCI Reversible Bridge
PI7C9X110