PI7C9X7954AFDE Pericom Semiconductor, PI7C9X7954AFDE Datasheet - Page 56

• 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

7.2.8.
7.2.9.
September 2009 – Revision 1.3
Pericom Semiconductor
LINE STATUS REGISTER – OFFSET 05h
MODEM STATUS REGISTER – OFFSET 06h
BIT
0
1
2
3
4
5
6
7
BIT
0
1
2
3
4
FUNCTION
Rx Data Available
Rx FIFO Overrun
Rx Parity Error
Rx Frame Error
Rx Break Error
Tx Empty
Tx Complete
Rx Data Error
FUNCTION
Delta CTS
Delta DSR
Delta RI
Delta DCD
CTS
09-0088
RO
RO
RO
RO
RO
RO
RO
RO
RO
RO
RO
RO
RO
TYPE
TYPE
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DESCRIPTION
0b: No data in the receive FIFO
1b: Data in the receive FIFO
Reset to 0b.
0b: No overrun error
1b: Overrun error
Reset to 0b.
0b: No parity error
1b: Parity error
Reset to 0b.
0b: No framing error
1b: Framing error
Reset to 0b.
0b: No break condition
1b: Break condition
Reset to 0b.
0b: Tx Holding Register is not empty.
1b: Tx Holding Register is empty.
Reset to 0b.
0b: Tx Shift Register is not empty.
1b: Tx Shift Register is empty.
Reset to 0b.
0b: No Rx FIFO error
1b: Rx FIFO error
Reset to 0b.
DESCRIPTION
0b: No change in CTS input.
1b: Indicates the CTS input has changed state.
This bit is read-clear.
Reset to 0b.
0b: No change in DSR input.
1b: Indicates the DSR input has changed state.
This bit is read-clear.
Reset to 0b.
0b: No change in RI input
1b: Indicates the RI input has changed state from the logic 0 to
This bit is read-clear.
Reset to 0b.
0b: No change in DCD input
1b: Indicates the DCD input has changed state.
This bit is read-clear.
Reset to 0b.
0b: The CTS input state is the logic 0
1b: The CTS input state is the logic 1
Reset to 0b.
the logic 1.
PCI Express® Quad UART
PI7C9X7954
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