PI7C9X7954AFDE Pericom Semiconductor, PI7C9X7954AFDE Datasheet - Page 26

• Manufacturer Part Number: PI7C9X7954AFDE
• Description: IC PCIE-TO-UART BRIDGE 128LQFP
• Manufacturer: Pericom Semiconductor

Specifications of PI7C9X7954AFDE

• Applications: PCIe-to-Uart Bridge
• Interface: Advanced Configuration Power Interface (ACPI)
• Voltage - Supply: 1.8V, 3.3V
• Package / Case: 128-LQFP
• Mounting Type: Surface Mount
• Transmitter And Receiver Fifo Counter: Yes
• Package Type: LQFP
• Mounting: Surface Mount
• Operating Temperature (min): -40C
• Operating Temperature (max): 85C
• Operating Temperature Classification: Industrial
• Lead Free Status / RoHS Status: Lead free / RoHS Compliant

6.2.1.
6.2.2.
6.2.3.
September 2009 – Revision 1.3
Pericom Semiconductor
VENDOR ID REGISTER – OFFSET 00h
DEVICE ID REGISTER – OFFSET 00h
COMMAND REGISTER – OFFSET 04h
Other than the PCI 2.3 compatible configuration space header, the I/O bridge also implements
PCI express extended configuration space header, which includes advanced error reporting
registers. The following table details the allocation of the register fields of PCI express
extended capability space header. The first extended capability always begins at offset 100h
with a PCI Express Enhanced Capability header and the rest of capabilities are located at an
offset greater than 0FFh relative to the beginning of PCI compatible configuration space.
BIT
15:0
BIT
31:16
BIT
0
1
2
3
4
5
6
Next Capability
Offset = 000h
31 – 24
31 – 24
FUNCTION
Vendor ID
FUNCTION
Device ID
FUNCTION
I/O Space Enable
Memory Space
Enable
Bus Master Enable
Special Cycle
Enable
Memory Write And
Invalidate Enable
VGA Palette Snoop
Enable
Parity Error
Response Enable
Advanced Error Capabilities and Control Register
09-0088
Capability Version
Uncorrectable Error Severity Register
Uncorrectable Error Status Register
Uncorrectable Error Mask Register
Correctable Error Status Register
Correctable Error Mask Register
23 – 16
23 – 16
Header Log Register
TYPE
TYPE
TYPE
RO
RW
RW
RW
RO
RO
RO
RO
RO
Reserved
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DESCRIPTION
Identifies Pericom as the vendor of this I/O bridge. The default
value may be changed by auto-loading from EEPROM.
Reset to 12D8h.
DESCRIPTION
Identifies this I/O bridge as the PI7C9X7954. The default value may
be changed by auto-loading from EEPROM.
Reset to 7954h.
DESCRIPTION
Controls a device’s response to I/O Space accesses. A value of 0
disables the device response. A value of 1 allows the device to
respond to I/O Space accesses.
Reset to 0b.
Controls a device’s response to Memory Space accesses. A value of 0
disables the device response. A value of 1 allows the device to
response to memory Space accesses.
Reset to 0b.
It is not implemented. Hardwired to 0b.
Does not apply to PCI Express. Must be hardwired to 0b.
Does not apply to PCI Express. Must be hardwired to 0b.
Does not apply to PCI Express. Must be hardwired to 0b.
Controls the device’s response to parity errors. When the bit is set,
the device must take its normal action when a parity error is
detected. When the bit is 0, the device sets its Detected Parity Error
Status bit when an error is detected.
PCI Express Extended Capability
15 – 8
15 – 8
ID = 001h
7 – 0
7 – 0
PCI Express® Quad UART
BYTE OFFSET
BYTE OFFSET
11Ch~128h
F4h - FCh
10Ch
100h
104h
108h
110h
114h
118h
PI7C9X7954
Datasheet