Radio Shack PRO-197 - Microprocessor Port Format

72
MICROPROCESSOR (IC307) PORT FORMAT
Pin Pin Pin
Number Function Number Function Number Function
1
Tri-Color LED D/A output 35
DSP Comms and Pin 12 74LV595A out
68 Power Save output
2 Tri-Color LED D/A output 36
DSP Comms and Pin 14 74LV595A out
69 Select DG Audio output
3 High Speed Data input 37 DSP Comms output 70 PLL Clock output
4 WX Alert input 38 DSP Comms input 71 PLL Data output
5 Low Speed Data input 39 Boot input 72 Select FM Audio output
6 BYTE input (GND) 40
DSP Comms and Pin 11 74LV595A out
73 EEPROM SDA output
7 CNVSS input (Pull down) 41 DSP-LD Ready input 74 PLL LE output
8 NC 42 DSP-LD 9600-Det input 75 PLL LD input
9 Voltage Regulator Control 43 DSP-LD ES-Det input/output 76 Shift Registor CLK output
10 Reset input 44 NC (Pull down) 77 Shift Registor A output
11 X-Out 45 DSP LD output 78 Signal Sweeper Control output
12 VSS 46 DSP Reset output 79 Signal Sweeper SQ2 input
13 X-in 47 Keyboard input 80
Signal Sweeper Search Control output
14 VCC1 48 Keyboard input 81 SQ1 input
15 NC (Pull up) 49 Keyboard input 82 AM Narrow Filter Select output
16 NC (Pull down) 50 Keyboard input 83 3rd OSC Control B output
17 Hold input 51 Keyboard input 84 Mute output
18 Alert Tone output 52 Keyboard input 85 Select AM Audio output
19 LCD RS output 53 DSP Sleep output 86 3rd OSC Control A output
20 Beep Tone output 54 DSP Wake output 87 Signal Sweeper Scan Control output
21 LCD CSB output 55 Keyboard output 88 Tri-Color LED output
22 Beep Tone output 56 Keyboard output 89 Tri-Color LED output
23 LCD SI output 57 Keyboard output 90 Tri-Color LED output
24 LCD SCL output 58 Keyboard output 91 Tri-Color LED output
25 LCD Reset output 59 Keyboard output 92 Low Battery Voltage A/D input
26 LCD Back Light output 60 VCC2 93 Zeromatic Voltage A/D input
27 WX Same Data input 61 Keyboard output 94 AVSS
28 Key Back Light output 62 VSS 95 RSSI A/D input
29 PC/IF output 63 DSP-LD RX-DG input 96 V REF
30 PC/IF input 64 External On input 97 AVCC
31 NC (Pull down) 65 Battery Charge output 98 Pocket/Mobile Select input
32 NC 66 Hiss Reduction output 99 NC (Pull up)
33 PC/IF output 67 NBFM Audio + 6 dB output 100 EEPROM SCL output
34 PC/IF input