ox16c954 ETC-unknow, ox16c954 Datasheet - Page 15

• Manufacturer Part Number: ox16c954
• Description: High Performance Quad Uart With 128-byte Fifos Intel / Motorola Bus Interface
• Manufacturer: ETC-unknow

4.1
Pin
I/M#
CS0#-CS3#
I/M#
DS# (CS0#)
A3-4 (CS1-2#)
IRQ# (INT0)
CS3#
INT1-3
INTSEL
RXRDY#
TXRDY#
SOUT
SIN
RTS#
CTS#
DTR#
DSR#
DCD#
RI#
INT
Data Sheet Revision 1.0
OXFORD SEMICONDUCTOR LTD.
Further Pin Information
Description
Intel / Motorola Mode Tie high for Intel™ style bus mode
Chip selects
Intel / Motorola Mode Tie low for Motorola ™ style bus mode
Data Strobe
Additional
lines
Global interrupt
Unused
Unused
Interrupt Control
Mode (used in Intel
mode only)
DMA Control signal
output
DMA Control signal
output
Serial data output
Serial data input
Request-To-Send
Modem signal output
Clear-To-Send
Modem signal input
Data-Terminal-Ready
Modem signal output
Data-Set-Ready
Modem signal input
Data-Carrier-Detect
Modem signal input
Ring-Indicator
Modem signal input
Interrupt Output
address
Action when used
Connect direct to active low channel select
signals for UART channels 0-3 respectively
Connect direct to data strobe generator logic
Connect direct to channel selection logic
A[4:3] = 00 = ch. 1, 01 = ch. 2 etc.
Interrupt for all channels. Connect to an
available processor interrupt line
Tie high to keep the interrupt pins
permanently enabled.
Connect direct to DMA control circuitry
Connect direct to DMA control circuitry
Connect to a suitable line driver
Connect to a suitable line receiver
Connect to a suitable line driver
Connect to a suitable line receiver
Connect to a suitable line driver
Connect to a suitable line receiver
Connect to a suitable line receiver
Connect to a suitable line receiver
Connect to an available processor interrupt
line
Motorola™ Mode Bus Interface Pins
Intel ™ Mode Bus Interface Pins
Common Channel Pins
Control Pins
DMA Pins
n/a
n/a
Action when not used
Leave unconnected (Internal pull-up)
Leave unconnected
(Interrupts can not be used)
Tie high
Leave unconnected
Tie low or leave unconnected to allow
software enable/disable of the
interrupt pin.
Leave unconnected
Leave unconnected
Leave unconnected
(Serial data can not be transmitted)
Leave unconnected
(Serial data can not be received)
Leave unconnected
Tie high
Leave unconnected
Tie high
Tie high
Tie high
Leave unconnected
(Interrupts can not be used)
Must be tied low for Motorola mode
n/a
n/a
n/a
n/a
OX16C954 rev B
Page 15