Midland 70-1341, Service Manual

Page: 45 / 68

CIRCUIT DESCRIPTION
70-1341/1344/1441/1444
Table 5-1 — IC901 Pinouts (Continued)
Pin No. Pin Name I/O Function Label Logic & Function
41 P17
CH7
42 P16
CH6
43 P15
CH5
44 P14 CH4
45 P13 CH3/SW3
46 P12 CH2/SW2
47 P11 CH1/SW2
48 P10
CH0/SW2
49 P07 LPSW CONT
50 P06 — — — Not used
51 P05
CALL
52 P04
MON
53 P03
TXDL2
54 P02 TX LPSW
55 P01 TX PLCL
56 P00
TX STB
57 P37
DIR
58 P36
MOD LSB
59 P35
W/N
60
 
61 P33
I DEPOW IN
62 P32 I TA SW IN
63 P31
O AUX SW OUT
64 P30
I/O AUX STB Serial Data Strobe for AUX
65 P87
BL CONT
66 P86 — — — Not used
67 P85
RX MUTE
68 P84 TXDL1
69 P83 LPSW
70 P82 I PLCL Synthesize Unlock (Low = Unlock)
71 DA4 POW VR
72 DA3 SQ VR
73 VCC — +5 V +5 V
74 ADVREF — LOGIC 5V +5 V
75 AVSS —
GND Ground
76 DAVREF — LOGIC 5V +5 V
77 P64 — — — Not used
78 P63
— — — Not used
79 CMPOUT — — — Not used
80 CMPVCC —
GND Ground
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