Kenwood TK-3401D Service Manual page 12

Pin Name I/O
No.
39 OPTDET I
40 GRNLED O
41 REDLED O
42 MIC_MT O
43 EXTSPMT O
44 ASSTSW O
45 TX/RX O
46 INSPSW O
47 TEST_TX O
48 TEST_RX I
49 VCAP_1 -
50 VDD4 -
51 CML_CSN O
52 CML_SCLK O
53 CML_CDATA O
54 CML_RDATA I
55 FM_RSTN O
56 FM_CSN O
57 FM_SCLK O
58 FM_SDATA I/O Data I/O for FM IC
59 PTT I
60 PF1 I
61 PF2 I
62 FM_PDN O
63 EN1 I
64 EN3 I
65 EN2 I
66 EN4 I
67 OPT3 I/O Option port 3
68 TXD O
69 RXD I
70 PLL_UL I
71 OPT2 I/O Option port 2
72 SWDIO I/O SWDIO for SWD
73 VCAP_2 -
74 VSS3 -
75 VDD5 -
76 SWCLK I/O SWCLK for SWD
77 CML_SSOUT I
78 CML_EPSCLK I
79 CML_EPSO O
80 CML_EPSI I
81 EEP_DATAI I
82 EEP_DATAO O
83 EEP_CS O
1-12 (No.RA012<Rev.001>)
Function
Option detection
Green LED control (Hi: LED ON)
Red LED control (Hi: LED ON)
MIC mute
Speaker mute
Assist switch
TX/RX switch (Hi: TX, Lo: RX)
Internal speaker switch
UART_TX for test
UART_RX for test
2.2uF
33MD
Chip select for baseband IC
SCLK for baseband IC
Command for baseband IC
REPLY for baseband IC
Hardware reset for FM IC
Chip select for FM IC
Clock for FM IC
PTT key
Programmable function key input 1
Programmable function key input 2
Power down port for LDO of FM IC
Encoder input 1
Encoder input 3
Encoder input 2
Encoder input 4
Serial data to MIC jack
Serial data from MIC jack
Unlock voltage for PLL
2.2uF
GND
33MD
SPI chip select for baseband IC
Clock for SPI
SPI output
SPI input
Data input for EEPROM
Data output to EEPROM
Chip select for EEPROM
Pin Name I/O
No.
84 EEP_CLK O
85 EEP_WP O
86 PLL_DATA O
87 PLL_LE O
88 PLL_CLK O
89 SWO O
90 SRST I
91 OPT5 I/O Option port 5
92 OPT6 I/O Option port 6
93 OPT7 I/O Option port 7
94 NC I
95 GPIO6 I/O No connection
96 GPIO7 I/O No connection
97 INT I
98 CML_IRQN I
99 PDR_ON -
100 VDD6 -
2.5 COMPONENTS DESCRIPTION
2.5.1 TX-RX unit (XC1-0072-70)
Ref. Part Name
No.
IC2 IC
IC3 IC
IC200 IC
IC400 IC
IC600 IC
IC601 IC
IC602 IC
IC603 IC
IC604 IC
IC605 IC
IC606 IC
IC700 IC
IC703 IC
IC704 IC
IC705 IC
IC706 IC
IC707 IC
IC708 IC
IC709 IC
IC710 IC
IC713 IC
IC715 IC
IC717 IC
Function
Clock for EEPROM
Write protect for EEPROM
Data output for PLL
Chip select for PLL
Clock for PLL
SWO for SWD
SRST for SWD
No connection
Interrupt
IRQ for baseband IC
GND
33MD
Description
PLL System
DC amplifier (CV)
DC amplifier (APC)
IF System
Voltage detector (INT)
Voltage regulator (50M)
Voltage regulator (50C)
Voltage regulator (50V)
Voltage regulator (33M)
Voltage detector (Reset)
Voltage regulator (33R)
EEPROM
Voltage regulator (33B)
DC amplifier (BPF tune)
Baseband system
DC amplifier (VOX)
AF power amplifier (EXT)
AF amplifier
AF power amplifier (INT)
MCU
Clock buffer amplifier
Voltage regulator (33MD)
Audio buffer amplifier