OXMPCI952 Datasheet, PDF (19/108 Pages) Oxford Semiconductor – Integrated High Performance Dual UARTs, 8-bit Local Bus/Parallel Port. 3.3v PCI/miniPCI interface.

OXFORD SEMICONDUCTOR LTD.
OXmPCI952
8-bit local bus
Mode 0
P10
A14
B13
H14
F12
E12,E13,C15,B15
F14
D15
G12,G13,F15,G14,A15,C14,
C13,D12
K13,K14,K15,J12,J14,H12,
H15,H13
Parallel port
Mode 1
A14
D12
C13
G14
C14
A15
F15
G13
Dir¹
O
O(h)
O
O
O
O(h)
Name
UART_Clk_Out
LBRST
LBRST#
LBDOUT
LBCLK
LBCS[3:0]#
Description
Buffered crystal output. This clock can drive external UARTs
connected to the local bus. Can be enabled / disabled by
software.
Local bus active-high reset
Local bus active-low reset
Local bus data out enable. This pin can be used by external
transceivers; it is high when LBD[7:0] are in output mode and
low when they are in input mode.
Buffered PCI clock. Can be enabled / disabled by software
Local bus active-low Chip-Select (Intel mode)
O(h) LBDS[3:0]#
O LBWR#
Local bus active-low Data-Strobe (Motorola mode)
Local Bus active-low write-strobe (Intel mode)
O LBRDWR#
O LBRD#
Local Bus Read-not-Write control (Motorola mode)
Local Bus active-low read-strobe (Intel mode)
Z Hi-Z
O(h) LBA[7:0]
Permanent high impedance (Motorola mode)
Local bus address signals
I/O(h) LBD[7:0]
Local bus data signals
Dir¹ Name
I(h) ACK#
I(h) INTR#
I(h) PE
I(h) BUSY
I(h) WAIT#
OD(h) SLIN#
O(h) ADDRSTB#
I(h) SLCT
I(h) ERR#
OD(h) INIT#
O(h) INIT#
OD(h) AFD#
O(h) DATASTB#
Description
Acknowledge (SPP mode). ACK# is asserted (low) by the
peripheral to indicate that a successful data transfer has
taken place.
Identical function to ACK# (EPP mode).
Paper Empty. Activated by printer when it runs out of paper.
Busy (SPP mode). BUSY is asserted (high) by the peripheral
when it is not ready to accept data
Wait (EPP mode). Handshake signal for interlocked IEEE
1284 compliant EPP cycles.
Select (SPP mode). Asserted by host to select the peripheral
Address strobe (EPP mode) provides address read and write
strobe
Peripheral selected. Asserted by peripheral when selected.
Error. Held low by the peripheral during an error condition.
Initialise (SPP mode). Commands the peripheral to initialise.
Initialise (EPP mode). Identical function to SPP mode.
Auto Feed (SPP mode, open-drain)
Data strobe (EPP mode) provides data read and write strobe
DS-0020 Jun 05
Page 19