XR16C872 Datasheet, PDF (11/60 Pages) Exar Corporation – DUAL UART WITH 1284 PARALLEL PORT AND PLUG-AND-PLAY CONTROLLER

DISCONTINUED
XR16C872
To
CPU Bus
D0-D7
A0-A2
A8-A15
IOR#
IOW#
IOCHRDY
TC
IRQB
(UART-B)
IRQA
(UART-A)
IRQC
(1284)
GND
AEN#
IRQ3
IRQ4
IRQ7
DREQ
(1284 Port)
DREQ3
DACK#
(1284 Port)
DACK3#
VCC
Mapped with Address A8-A15:
* UART-A at 0x7F00-7F08 & IRQA
* UART-B at 0x5F00-6F08 & IRQB
* 1284 Port at 0x6F00-6F08 withIRQC,
DREQ and DACK#
MAN#
S1
S2
S3
S4
S5
GND
30-21
2-4
5-12
19
99
100
20
91
92
93
A0-A2
A3-A10
94
95
96
97 ^XR16C872
89
88
87
86
81
80
79
78
85
84
83
82
UART-A
UART-B
1284
Parallel
Port
74
18
17
Port
Configuration
16
Logic
15
14
Figure 4, Manual Configuration Interface in Embedded Application
Rev. 1.00
Visit Exar Web Site at www.exar.com
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