RCA BR200DV, Service Manual

Page: 31 / 79

BR200DV/BR300DV
Service Manual
31
AD123_IN13
19 S VDD VDD Connected to 3.3V 。
20 S VSS VSS Connected to VSSA
21 S VREF+ VREF+ Connected to 3.3V.
22 S VDDA VDDA Connected to 3.3V.
23 I
PA0/
ADC123_IN0
MANDOWN MANDOWN Input;
24 I
PA1/
ADC123_IN1
BATT Battery Input;
25 I
PA2/
ADC123_IN2
QT/DQT_IN CTCSS/DCS Input
26 I
PA3/
ADC123_IN3
VOX VOX Input
27 S VSS_4 VSS_4 Connected to VSSA
28 S VDD_4 VDD_4 Connected to 3.3V.
29 O
PA4/
DAC_OUT1
APC/TV APC/TV D/A Output
30 O
PA5/
DAC_OUT2
MOD2_BIAS TCXO Frequency D/A Adjust
31 I
PA6/
ADC12_IN6
POWER_DET Power Detect(High Active)
32 O PA7 POWER_C Power Control(High Active)
33 O PC4 RF_APC_SW RF Amplifier Switch(High Active)
34 O PC5 5TC 5T Power Control(High Active)
35 I
PB0/
ADC12_IN8
RSSI RSSI Detect Input
36 I
PB1/
ADC12_IN9
BUSY Carrier Detect Input
37 I/O PB2/BOOT1 FM_SW FM Receive IF Switch(High Active)
38 O PE7 FM_MUTE FM RX Mute(High Active)
39 O PE8 VCOVCC_SW RXVCO/TXVCO Control(High for RX)
40 O PE9 DMR_SW DMR Receive IF Switch(High Active)
41 I PE10 VOL_MAX Max Volume Control(High Active)
42 O PE11 EXT_PTT Ext PTT Input
43 I PE12 PTT_KEY PTT Input
44 I PE13 ALARM_KEY Top Key Input
45 I PE14 ENCODE_IN0 Channel Encode IN0
46 I PE15 ENCODE_IN1 Channel Encode IN1
47 I PB10 ENCODE_IN2 Channel Encode IN2
48 I PB11 ENCODE_IN3 Channel Encode IN3
49 S VCAP_1 VCAP_1 Connect a Capacitor to Ground
50 S VDD_1 VDD_1 Connected to 3.3V
。