Kenwood NX-340 Service Manual page 11

Pin Name I/O
No.
34 RSSI I RSSI input
35 BUSY I BUSY input
36 TH_DET I Thermistor detection (Temperature
detection)
37 33MSC I/O 33M switch control
38 OPT1 O Option port 1
39 OPTDET I Option detection
40 GRNLED O Green LED control (Hi: LED ON)
41 REDLED O Red LED control (Hi: LED ON)
42 MIC_MT O MIC mute
43 EXTSPMT O Speaker mute
44 ASSTSW O Assist switch
45 TX/RX O TX/RX switch (Hi: TX, Lo: RX)
46 INSPSW O Internal speaker switch
47 TEST_TX O UART_TX for test
48 TEST_RX I UART_RX for test
49 VCAP_1 - 2.2uF
50 VDD4 - 33MD
51 CML_CSN O Chip select for baseband IC
52 CML_SCLK O SCLK for baseband IC
53 CML_CDATA O Command for baseband IC
54 CML_RDATA I REPLY for baseband IC
55 FM_RSTN O Hardware reset for FM IC
56 FM_CSN O Chip select for FM IC
57 FM_SCLK O Clock for FM IC
58 FM_SDATA I/O Data I/O for FM IC
59 PTT I PTT key
60 PF1 I Programmable function key input 1
61 PF2 I Programmable function key input 2
62 FM_PDN O Power down port for LDO of FM IC
63 EN1 I Encoder input 1
64 EN3 I Encoder input 3
65 EN2 I Encoder input 2
66 EN4 I Encoder input 4
67 OPT3 I/O Option port 3
68 TXD O Serial data to MIC jack
69 RXD I Serial data from MIC jack
70 PLL_UL I Unlock voltage for PLL
71 OPT2 I/O Option port 2
72 SWDIO I/O SWDIO for SWD
73 VCAP_2 - 2.2uF
74 VSS3 - GND
75 VDD5 - 33MD
76 SWCLK I/O SWCLK for SWD
77 CML_SSOUT I SPI chip select for baseband IC
78 CML_EPSCLK I Clock for SPI
Function
2.3
2.3.1 TX-RX unit (X57-8510-XX)
IC2
IC3
IC200
IC400
IC600
IC601
IC602
IC603
IC604
IC605
IC606
IC700
IC703
IC704
IC705
IC706
IC707
IC708
IC709
Pin Name I/O
No.
79 CML_EPSO O SPI output
80 CML_EPSI I SPI input
81 EEP_DATAI I Data input for EEPROM
82 EEP_DATAO O Data output to EEPROM
83 EEP_CS O Chip select for EEPROM
84 EEP_CLK O Clock for EEPROM
85 EEP_WP O Write protect for EEPROM
86 PLL_DATA O Data output for PLL
87 PLL_LE O Chip select for PLL
88 PLL_CLK O Clock for PLL
89 SWO O SWO for SWD
90 SRST I SRST for SWD
91 OPT5 I/O Option port 5
92 OPT6 I/O Option port 6
93 OPT7 I/O Option port 7
94 NC I No connection
95 GPIO6 I/O No connection
96 GPIO7 I/O No connection
97 INT I Interrupt
98 CML_IRQN I IRQ for baseband IC
99 PDR_ON - GND
100 VDD6 - 33MD
COMPONENTS DESCRIPTION
Ref. Part Name
No.
IC
IC
IC
IC
IC
IC
IC
IC
IC
IC
IC
IC
IC
IC
IC
IC
IC
IC
IC
Function
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)
(No.RA003<Rev.004>)1-11