LBI-38378D
TABLE 2 - UDC PIN FUNCTIONS
PIN |
| NAME | INPUT OR | USE | |
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| OUTPUT |
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1 |
| GROUND | Case Ground | ||
3 |
| UDC RX AUDIO | Output | Test Point For Speaker Audio | |
4 |
| SWBATT | Output | Switched Accessory Power | |
5 |
| EXT PTT | Input | External Microphone PTT Input | |
6 |
| TX DATA | Input | For Programming | |
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7 |
| RX DATA | Output | For Programming | |
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8 |
| SPARE |
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9 |
| UDC VOLT | Option/Accessory Sense Pin | ||
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10 |
| T/R | Output | Low = Transmit, High = Receive | |
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11 |
| UDC MUTE | Output | Low = Audio Muted | |
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12 |
| EXT MIC HI | Input | External Microphone Audio Input | |
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13 |
| EXT EMER | Input | Lanyard Connection | |
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34 |
| UDC DISCR | Output | Test Point For RX Audio | |
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Figure 5 - UDC Pin-Out
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