OX16PCI954_05 Datasheet, PDF (12/73 Pages) Oxford Semiconductor – Integrated Quad UART and PCI interface

OXFORD SEMICONDUCTOR LTD.
OX16PCI954
Mode
Dir¹ Name
00
01
10
11
Subsystem ID & Subsystem Vendor ID pins
N/A
131-124, _N/A
I Sub_ID[15:0]
117-114,
91-88
N/A
121-118, _N/A
I Sub_V_ID[15:0]
108-105,
101-98,
95-92
Multi-purpose & External interrupt pins
131 N/A N/A 131 I/O MIO0
Description
Subsystem ID. After reset the subsystem ID of Function 0
will default to the value assigned to these pins
Subsystem Vendor ID. After reset the subsystem vendor ID
of Function 0 will default to the value assigned to these pins.
Multi-purpose I/O 0. Can drive high or low, or assert a PCI
interrupt
N/A 131 N/A N/A
Z Hi-Z
130 130 N/A 130 I/O MIO1
Permanent high impedance
Multi-purpose I/O 1. Can drive high or low, or assert a PCI
interrupt
Z Hi-Z
129 129 N/A 129 I/O MIO2
Permanent high-impedance when LCC[6:5] ≠ ‘00’
Multi-purpose I/O 2. When LCC[7] = 0, this pin can drive high
or low, or assert a PCI interrupt.
I PME_In
124-128
N/A 124-8, I/O MIO[3:11]
88-91
88-91
EEPROM pins
41
O EE_CK
39
O EE_CS
42
IU EE_DI
40
Miscellaneous pins
43
44,45
O EE_DO
IU TEST
I Mode[1:0]
Input power management event. When LCC[7] is set this
input pin can assert a function 1 PME#
Multi-purpose I/O pins. Can drive high or low, or assert a PCI
interrupt
EEPROM clock
EEPROM active-high Chip Select
EEPROM data in. When the serial EEPROM is connected,
this pin should be pulled up using 1-10k resistor. When the
EEPROM is not used the internal pullup is sufficient.
EEPROM data out.
Must be connected to GND
Mode selector:
00: Function 0 is Quad UART, Function 1 is 8-bit local bus
01: Function 0 is Quad UART, Function 1 is parallel port
10: Function 0 is Quad UART, Function 1 is unusable as the
local bus pins are used to assign Subsystem ID and
Subsystem Vendor ID to function 0
Power and ground²
18, 31, 57, 72, 97, 111, 147, 157
22, 65, 104, 137
8, 17, 25, 30, 35, 56, 70, 96, 110,
142, 146, 153, 158
21, 62, 103, 135
11: Function 0 is unusable, Function 1 is 32-bit local bus
V AC VDD
V DC VDD
G AC GND
Supplies power to output buffers in switching (AC) state
Power supply. Supplies power to core logic, input buffers
and output buffers in steady state
Supplies GND to output buffers in switching (AC) state
G DC GND
Ground (0 volts). Supplies GND to core logic, input buffers
and output buffers in steady state
Table 2: Pin Descriptions
DS-0029 Jul 05
External—Free Release
Page 12