User Manual

Interfacing and controlling the RIM 801D: Serial port interface
Integrator’s Guide – RIM 801D OEM Radio Modem
46
17
16
15
14
13 TURNON
12 ONI
11 TX
10 RX
28
27
26
25
24
23
22
21
8
7
6
5
4
3
2
1
32
33
34
35
36
37
38
39
VCC
EA
ALE
RESET
X2
X1
GND
40
31
ALE* 30
5 RESET 9
18
19
20
All these lines can
be used for your
control functions
87C51FC (Intel)
PB RST
TD RST
TOL
ST
DS1232 (Dallas Semi.)
or MAXIM Equiv.
VCC
VCC
VCC
GND
GND
11.059MHz
GNDGND
30pF22pF
GND
6
(RD) 3.7
(WR) 3.6
(T1) 3.5
(T0) 3.4
(INT1) 3.3
(INT0) 3.2
(TX) 3.1
(RX) 3.0
2.7
2.6
2.5
2.4
2.3
2.2
2.1
2.0
1.7
1.6
1.5
1.4
1.3
1.2
1.1
1.0
0.7
0.6
0.5
0.4
0.3
0.2
0.1
0.0
1
2
3
7
1
2
3
4
5
6
7
8
9
10
11
12
13
14
GND
GND
GND
GND
RX
TX
ONI
TURNON
RX
TX
ONI
TURNON
GND
390pF
GND
390pF
GND
390pF
GND
390pF
14 Pin
RIM 801D
Radio Connector
Figure 13: Simple 8051 Interface