Kenwood TH-D72A Service Manual page 13

Pin No. Port Name I/O
78 D[2] O Data for LCD
79 D[1] O Data for LCD
80 E2PCS2 O Chip select for EEPROM (IC731)
81 E2PCL O Clock for EEPROM
82 E2PSI O Data input for EEPROM
83 E2PSO I Data output for EEPROM
84 E2PCS O Chip select for EEPROM (IC730)
85 VCC - VCC 3.3V
86 D[0] O Data for LCD
87 VSS - GND
88 RLEDA O BUSY LED control for band A
89 TLEDA O TX LED control for band A
90 RLEDB O BUSY LED control for band B
91 TLEDB O TX LED control for band B
Power supply control for RS-232C
92 232B_S O
driver L: ON
93 AFM O AF mute control L: ON
94 SPM O SP mute control H: ON
95 MICM O MIC mute control L: ON
96 ENC1 I Encoder input 1
97 ENC2 I Encoder input 2
98 PSW I Power switch input
Power supply control for USB driver
99 Vbus_USB O
H: ON
100 TXD_USB O TXD for USB driver IC
101 RXD_USB I RXD for USB driver IC
102 CTS_USB I CTS for USB driver IC
103 RTS_USB O RTS for USB driver IC
104 /SUSPEND I USB suspend
105 RST_USB I/O Reset for USB driver IC
106 MAIN_WR I Programming mode select
107 CHG_TH I Thermal detect from charge
108 BV I Voltage detection
109 SET I Set detection
110 PTT I PTT key input
111 AFB_S O Power supply control for AF AMP
112 SQ O Busy detect output
113 Vbus_DET I USB connect detection
114 TNC_WR O Programming mode select
115 GPSLED I GPS position aquisition status
116 CON I TNC connect fl ag input
117 TNC_RST O Reset for TNC MCU
118 STA I STA for TNC MCU
119 S9600 I 9600/1200 bps select
SEMICONDUCTOR DATA
Function
TH-D72A/D72E
Pin No. Port Name I/O
120 REM I Remote voltage input
121 VOX_IN I VOX level detection
122 SQA I SQ level A/D input band A
123 SMA I Signal level A/D input band A
124 SMB I Signal level A/D input band B
125 SQB I SQ level A/D input band B
126 WXCTIN_B I CTCSS/DCS/WX decode band B
127 AVSS - GND
128 WXCTIN_A I CTCSS/DCS/WX decode band A
Sub MCU: 78F0515AGKDXA
(TX-RX (TX-RX) unit (C/3) IC611)
Pin No. Port Name I/O
Output voltage select for DC/DC
1 DC_S O
converter L: TX ON
2 UAIP O AIP control for UHF L: ON
3 VAIP O AIP control for VHF L: ON
4 45RVAM_S O RX AM power supply control L: ON
VCO power supply control for band
5 SGL_B O
B L: ON
RX UHF power supply control for
6 45RUA_S O
band A H: ON
RX IF power supply control for band
7 33RB_S O
B L: ON
Charging current control
8 PRE_CHG O
H: Normal, L: Precharge
RX VHF power supply control for
9 45RVB_S O
band B H: ON
RX VHF power supply control for
10 45RVA_S O
band A H: ON
RX UHF power supply control for
11 45RUB_S O
band B H: ON
12 OCD1B I Not used
13 OCD1A I Not used
LE output for PLL IC (IC513)
14 LE_B I
H: Lock
15 CHG O Charging control H: ON
16 SAVE1 O Save switch L: Save ON
Battery voltage detection switch
17 BTV_ON O
H: ON
18 RXD6 I Not used
19 TXD6 I Not used
20 APCSW O APC discharge switch H: ON
21 TXD_S O Main MCU TXD
22 RXD_S I Main MCU RXD
23 AVREF - Reference voltage (3.3V)
Function
Function
13