XR16L788 Exar Corporation, XR16L788 Datasheet - Page 6

• Manufacturer Part Number: XR16L788
• Description: High-performance 3.3V Octal Uart
• Manufacturer: Exar Corporation

N
ANCILLARY SIGNALS
OTE
TMRCK
DSR7#
16/68#
XTAL1
XTAL2
: Pin type: I=Input, O=Output, IO= Input/output, OD=Output Open Drain.
CD7#
RST#
N
ENIR
GND
RI7#
VCC
AME
4,18,29,47,83,
3,17,28,48,84
P
33
34
35
82
81
14
15
IN
1
2
#
T
YPE
O
I
I
I
I
I
I
I
I
UART channel 7 Data Set Ready or general purpose input (active low). See
description of DSR0# pin.
UART channel 7 Carrier Detect or general purpose input (active low).
UART channel 7 Ring Indicator or general purpose input (active low).
Crystal or external clock input.
Crystal or buffered clock output.
16-bit timer/counter external clock input.
Infrared mode enable (active high). This pin is sampled during power up, fol-
lowing a hardware reset (RST#) or soft-reset (register RESET). It can be used
to start up all 8 UARTs in the infrared mode. The sampled logic state is trans-
ferred to MCR bit-6 in the UART.
Reset (active low). The configuration and UART registers are reset to default
values, see Table-18.
Intel or Motorola data bus interface select. Logic one selects Intel bus inter-
face and logic zero selects Motorola interface. This input affects the function-
ality of IOR#, IOW# and CS# pins.
+3.3V supply with 5V tolerant inputs.
Power supply common, ground.
6
D
ESCRIPTION
XR16L788 OCTAL UART
REV. 1.1.4