PI7C9X7954AFDE Pericom Semiconductor, PI7C9X7954AFDE Datasheet - Page 49

• 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

7.1.9.
7.1.10. SPECIAL FUNCTION REGISTER – OFFSET 07h
September 2009 – Revision 1.3
Pericom Semiconductor
MODEM STATUS REGISTER – OFFSET 06h
BIT
7
BIT
0
1
2
3
4
5
6
7
BIT
0
1
2
3
4
FUNCTION
Rx Data Error
FUNCTION
Delta CTS
Delta DSR
Trailing RI Edge
Delta DCD
CTS
DSR
RI
DCD
FUNCTION
Force Transmission
Auto DSR and
DTR Flow Control
Reserved
Reserved
Reserved
09-0088
RO
RO
RO
RO
RO
RO
RO
RO
RO
RW
RW
RO
RO
RW
TYPE
TYPE
TYPE
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DESCRIPTION
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.
0b: The DSR input state is the logic 0
1b: The DSR input state is the logic 1
Reset to 0b.
The input state of RI pin
Reset to 0b.
The input state of DCD pin
Reset to 0b.
DESCRIPTION
Forces transmitter to always to transmit data.
1b: Enabled
0b: Disabled
Reset to 0b.
Auto DSR and DTR flow control enable
1b: Enables DSR and DTR auto flow control
0b: Disables DSR and DTR auto flow control
Reset to 0b.
Reset to 0b.
Reset to 0b.
Reset to 0b.
the logic 1.
PCI Express® Quad UART
PI7C9X7954
Datasheet