Super Star 4900B, Service Manual

Page: 19 / 63

20
P13 (DVO) TRI STATE TX OUT (OUT) ACTIVE “H”
21 P14 (PPG) TRI STATE LC7152 DI (OUT)
22
P15 (TC2) TRI STATE LC162 CLK (OUT)
23
P16 TRI STATE LC7152 ENABLE (OUT)
24 P17 TRI STATE LC7152 LDA (OUT)
25 P30 OPEN DRAIN EEPROM DATA
26
P31 OPEN DRAIN EEPROM CLOCK
27
P32 OPEN DRAIN FREQUENCY SHIFT 0.5KHz (OUT) ACTIVE “H”
28 P33 OPEN DRAIN FREQUENCY SHIFT 1KHz (OUT) ACTIVE “H”
29 P34 OPEN DRAIN FREQUENCY SHIFT 2KHz (OUT) ACTIVE “H”
30
P50 (AIN0) TRI STATE MODULATION LEVEL IN (A/D) (IN)
31
P51 (AIN1) TRI STATE SIGNAL LEVEL IN (A/D) (IN) ACTIVE “H”
32 P52 (AIN2) TRI STATE SWR LEVEL IN (A/D) (IN)
33 P53 (AIN3) TRI STATE AC LEVEL IN (IN)
34
P54 (AIN4) TRI STATE N.C
35
P55 (AIN5) TRI STATE MIC (PTT, UP, DN) (A/D) (IN)
36 P56 (AIN6) TRI STATE MIC (MON,P1, P2, P3) (IN) TABLE
37
P57 (AIN7) TRI STATE EMG SELECTOR (IN) “H”: EMG 19
“L”: EMG 9
38 VASS ANALOG INPUT MODEL SELECTOR 3 IN (IN)
39
VAREF ANALOG INPUT AD REFERENCE HIGH VILTAGE
40
VDD ANALOG INPUT VDD
41 P70 (SEG31) OPEN DRAIN LC7584 DATA OUT (OUT)
42 P71 (SEG30) OPEN DRAIN LC7584 DATA IN (OUT)
43
P72 (SEG29) OPEN DRAIN LC7584 CLOCK (OUT)
44
P73 (SEG28) OPEN DRAIN LC7584 CHIP ENABLE (OUT)
45 P74 (SEG27) OPEN DRAIN MODE IN TABLE
46
P75 (SEG26) OPEN DRAIN MODE IN TABLE
47
P76 (SEG25) OPEN DRAIN MODE IN TABLE
48 P77 (SEG24) OPEN DRAIN MODE IN TABLE
49 SEG23 (P60) DTMF IN/OUT
50
SEG22 (P61) DTMF IN/OUT
51
SEG21 (P62) DTMF IN/OUT
52 SEG20 (P63) DTMF IN/OUT
53
SEG19 (P64) ANT SELECTOR (OUT) “L” ANT 1
“H” ANT2
54 SEG18 (P65) MOD OUT (OUT) ACTIVE “H”
55
SEG17 (P66) N.C
56
SEG16 (P67) N.C
57 SEG15 (P90) HI-CUT OUTOUT (1) (OUT)
58 SEG14 (P91) HI-CUT OUTOUT (2) (OUT)
59
SEG13 (P92) HI-CUT OUTOUT (4) (OUT)
60
SEG12 (P93) HI-CUT OUTOUT (8) (OUT)
61 SEG11 N.C
62
SEG10 N.C
63
SEG9 N.C
64
SEG8 N.C
65 SEG7 N.C
67
SEG5 N.C
68
SEG4 N.C
69 SEG3 N.C
70 SEG2 N.C
71
SEG1 N.C
72
SEG0 N.C
73 COM 3 N.C
74 COM 2 N.C
75
COM 1 N.C
76
COM 0 N.C
77 VLC N.C
78
N.C N.C
79
N.C N.C
80 N.C N.C