XR16C872IQ View Datasheet(PDF) - Exar Corporation

Part Name

Description

MFG CO.

XR16C872IQ

Dual UART with 1284 Parallel Port and Plug-and-Play Controller

Exar Corporation

'XR16C872IQ' PDF : 60 Pages View PDF

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Preliminary
XR16C872
AEN
A0-A15
IOW#
D0-D7
T3AS
Valid Address
T4AH
T9WR
Active
T6DY
T10DS
Valid Data
T11DH
Figure 10. ISA Bus Write Timing
XR872WR
IOW#
RTS#
DTR#
Outputs
CD#
CTS#
DSR#
Inputs
INT
IOR#
RI#
Rev. P1.00
Active
Change of state
T12D
Change of state
Change of state
T13D
Active
Active
Change of state
T13D
T14D
Active
Active
Figure 11. Modem Input/Output Timing
Active
Active
T13D
Change of state
XR872MD
51

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