IMP16C554 IMP Inc, IMP16C554 Datasheet - Page 4

• Manufacturer Part Number: IMP16C554
• Description: Quad Universal Asynchronous Receiver/Transmitter (UART) with FIFOs
• Manufacturer: IMP Inc

4
SYMBOL DESCRIPTION
VCC
VCC
symbol
RESET
CTS*A-B
CTS*C-D
DSR*A-B
DSR*C-D
RI*A-B
RI*C-D
CD*A-B
CD*C-D
13.30
47.64
37
11.25
45.59
10.26
44.60
43.61
42.62
9.27
8.28
pin
Signal Type
408-432-9100/www.impweb.com
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I
I
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This pin will be set to high state after writing a “0” to that
register or after the reset. Note that this pin does not
have any effect on the transmit or receive operation.
Master reset.(active high)A high on this pin will reset all
the outputs and internal registers. The transmitter
output and the receiver input will be disabled during
reset time.
Clear to send. (active low) The CTS* signal is a
MODEM control function input whose conditions can be
tested by reading the MSR BIT-4. CTS* has no effect
on the transmit or receive operation.
Data set ready. ( active low) A low on this pin indicates
the MODEM is ready to exchange data with UART. This
pin does not have any effect on the transmit or receive
operation.
Carrier detect.(active low) A low on this pin indicates the
carrier has been detected by the modem.
Ring detect indicator. ( active low) A low on this pin
indicates the modem has received a ringing signal from
telephone line.
Power supply input.
Pin Description
IMP16C554
IMP16C554
© 2002 IMP, Inc.