PI7C8150ND Pericom Semiconductor, PI7C8150ND Datasheet - Page 86

• Manufacturer Part Number: PI7C8150ND
• Manufacturer: Pericom Semiconductor

Specifications of PI7C8150ND

• Operating Temperature (min): 0C
• Operating Temperature Classification: Commercial
• Operating Temperature (max): 85C
• Package Type: BGA
• Rad Hardened: No
• Case: BGA
• Dc: 04+
• Lead Free Status / Rohs Status: Not Compliant

14.1.39
GPIO DATA AND CONTROL REGISTER – OFFSET 64h
4
5
6
7
Bit
11:8
15:12
19:16
23:20
27:24
31:28
Master Abort On
Posted Write
Delayed Write
Non-Delivery
Delayed Read –
No Data From
Target
Reserved
Function
GPIO Output
Write-1-to-Clear
GPIO Output
Write-1-to-Set
GPIO Output
Enable Write-1-
to-Clear
GPIO Output
Enable Write-1-
to-Set
Reserved
GPIO Input Data
Register
R/W
R/W
R/W
R/O
Type
R/WC
R/WS
R/WC
R/WS
R
R/O
Controls PI7C8150’s ability to assert P_SERR_L when it receives a
master abort when attempting to deliver posted write data.
0: P_SERR# is asserted if this event occurs and the SERR# enable bit
in the command register is set
1: P_SERR# is not asserted if this event occurs
Reset to 0
Controls PI7C8150’s ability to assert P_SERR# when it is unable to
transfer delayed write data after 2
0: P_SERR_L is asserted if this event occurs and the SERR_L enable
bit in the command register is set
1: P_SERR_L is not asserted if this event occurs
Reset to 0
Controls PI7C8150’s ability to assert P_SERR_L when it is unable to
transfer any read data from the target after 2
0: P_SERR_L is asserted if this event occurs and the SERR_L enable
bit in the command register is set
1: P_SERR_L is not asserted if this event occurs
Reset to 0
Reserved. Returns 0 when read. Reset to 0
Description
Writing 1 to any of these bits drives the corresponding bit LOW on
the GPIO[3:0] bus if it is programmed as bidirectional. Data is
driven on the PCI clock cycle following completion of the
configuration write to this register. Bit positions corresponding to
GPIO pins that are programmed as input only are not driven. Writing
0 has no effect and will show last the last value written when read.
Reset to 0.
Writing 1 to any of these bits drives the corresponding bit HIGH on
the GPIO[3:0] bus if it is programmed as bidirectional. Data is
driven on the PCI clock cycle following completion of the
configuration write to this register. Bit positions corresponding to
GPIO pins that are programmed as input only are not driven. Writing
0 has no effect and will show last the last value written when read.
Reset to 0.
Writing 1 to and of these bits configures the corresponding
GPIO[3:0] pin as an input only. The output driver is tristated.
Writing 0 to this register has no effect and will reflect the last value
written when read.
Reset to 0.
Writing 1 to and of these bits configures the corresponding
GPIO[3:0] pin as bidirectional. The output driver is enabled and
drives the value set in the output data register (65h). Writing 0 to this
register has no effect and will reflect the last value written when read.
Reset to 0.
Reserved. Returns 0 when read. Reset to 0.
Reads the state of the GPIO[3:0] pins. The state is updated on the PCI
clock following a change in the GPIO[3:0] pins.
76
March 19, 2003 – Revision 1.04
2-PORT PCI-TO-PCI BRIDGE
ADVANCE INFORMATION
24
attempts.
24
attempts.
PI7C8150