PI7C7300 Pericom Semiconductor Corporation, PI7C7300 Datasheet - Page 75
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PI7C7300
Manufacturer Part Number
PI7C7300
Description
3-PORT PCI-to-PCI BRIDGE
Manufacturer
Pericom Semiconductor Corporation
Datasheet
1.PI7C7300.pdf
(109 pages)
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14.1.5
14.1.6
14.1.7
14.1.8
REVISION ID REGISTER – OFFSET 08h
CLASS CODE REGISTER – OFFEST 08h
CACHE LINE SIZE REGISTER – OFFSET 0Ch
PRIMARY LATENCY TIMER REGISTER – OFFSET 0Ch
Bit
27
28
29
30
31
Bit
7:0
Bit
15:8
23:16
31:24
Bit
7:0
Bit
15:8
Received Target
Received Master
Signaled System
Detected Parity
Sub-Class Code
Base Class Code
Cache Line Size
Primary Latency
Function
Signaled Target
Abort
Abort
Abort
Error
Error
Function
Revision
Function
Programming
Interface
Function
Function
timer
Type
R/WC
R/WC
R/WC
R/WC
R/WC
Type
R/O
Type
R/O
R/O
R/O
Type
R/W
Type
R/W
Page 75 OF 109
Description
Set to 1 (by a target device) whenever a target abort cycle occurs
Reset to 0
Set to 1 (by a master device) whenever transactions are terminated
with target aborts
Reset to 0
Set to 1 (by a master) when transactions are terminated with Master
Abort
Reset to 0
Set to 1 when P_SERR# is asserted
Reset to 0
Set to 1 when address or data parity error is detected on the primary
interface
Reset to 0
Description
Indicates revision number of device. Hardwired to 00h
Description
Read as 0 to indicate no programming interfaces have been defined
for PCI-to-PCI bridges
Read as 04h to indicate device is PCI-to-PCI bridge
Read as 06h to indicate device is a bridge device
Description
Designates the cache line size for the system and is used when
terminating memory write and invalidate transactions and when
prefetching memory read transactions.
Only cache line sizes (in units of 4-byte) which are a power of two
are valid (only one bit can be set in this register; only 00h, 01h, 02h,
04h, 08h, and 10h are valid values).
Reset to 0
Description
This register sets the value for the Master Latency Timer which
starts counting when the master asserts FRAME#.
Reset to 0
3-PORT PCI-TO-PCI BRIDGE
ADVANCE INFORMATION
09/25/03 Revision 1.09
PI7C7300A