xr16m698 Exar Corporation, xr16m698 Datasheet - Page 6

• Manufacturer Part Number: xr16m698
• Description: 1.62v To 3.63v High Performance Octal Uart With 32-byte Fifo
• Manufacturer: Exar Corporation

XR16M698
1.62V TO 3.63V HIGH PERFORMANCE OCTAL UART WITH 32-BYTE FIFO
N
ANCILLARY SIGNALS
OTE
TMRCK
DTR7#
DSR7#
RTS7#
CTS7#
16/68#
XTAL1
XTAL2
N
CD7#
RST#
ENIR
GND
RI7#
VCC
RX7
AME
: Pin type: I=Input, O=Output, IO= Input/output, OD=Output Open Drain.
3,17,28,48,84
4,18,29,47,83
P
31
36
32
37
33
34
35
82
81
14
15
IN
1
2
#
T
YPE
O
O
O
I
I
I
I
I
I
I
I
I
I
UART channel 7 Receive Data or infrared receive data. Normal RXD input idles
HIGH. The infrared pulse can be inverted internally prior to decoding by setting
FCTR bit-4.
UART channel 7 Request to Send or general purpose output (active LOW). See
description of RTS0# pin.
UART channel 7 Clear to Send or general purpose input (active LOW). See descrip-
tion of CTS0# pin.
UART channel 7 Data Terminal Ready or general purpose output (active LOW). See
description of DTR0# pin.
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, following
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 transferred to MCR bit-6 in
the UART.
Reset (active LOW). The XR16M698 does not have a Power-on reset. Therefore, a
hardware reset must be issued using this pin during power-up. The configuration
and UART registers are reset to default values, see
Intel or Motorola data bus interface select. The Intel bus interface is selected when
this input is HIGH and the Motorola bus interface is selected when this input is LOW.
This input affects the functionality of IOR#, IOW# and CS# pins.
+1.62V to 3.63V supply voltage.
Power supply common, ground.
6
D
ESCRIPTION
Table 19
.
REV. 1.0.0