Semiconductor Data - HYT TM-600 Service Manual

Semiconductor Data

1. Positive Voltage regulator: TA7805F (Power Unit IC602), TA7808S (Power Unit IC601).
2. EEPROM: AT24C256N10SI2.7 (CPU unit IC501)
Pin Function
Pin No. Name
1 to 3 A0 to A2
4 GND
5 SDA
6 SCL
7 TEST
8 VCC
3. Audio processor: AK2346 (AF Pwr Unit IC404)
Pin Function
Pin No. Name
1 AGNDIN
2 AGND
3 TXIN
4 TXINO
5 LIMLV
6 EXTLIMIN
7 MOD
8 VSS
9 TCLK
10 TDATA
11 DI/O
12 RDF/FC
13 SCLK
14 DIR
15 XOUT
16 XIN
17 VDD
18 EXPOUT
19 RXAFIN
20 RXAF
21 RXLPFO
22 RXINO
23 RXIN
24 TEST
I/O Function
I Address input
GND
I/O Serial data
Serial clock input
Test
+5V.
I/O Function
I Analog ground input pin.
O Analog ground output pin.
I Transmit audio signal input pin.
O TXA1 feedback output pin.
I Limit level tune pin.
I External signal input pin for pre-limiter circuit.
O The modulated transmit signal output pin.
GND.
O Clock output pin for MSK transmission data.
MSK transmission data input pin.
I
Data are latched synchronizing with the TCLK rising edge.
Serial data input and output pin.
I/O
Input for register setting data and output for MSK receive data.
O Output pin for MSK signal receiving flag and frame detection signal
I Clock input pin for serial data I/O.
I Serial data I/O control pin.
I Crystal oscillator connecting input pin.
I/O Crystal oscillator connecting input and output pin.
Positive power supply pin.
O Output signal after audio processing
I Receive audio signal input pin.
O Receive audio signal output pin.
O Receive LPF output pin.
O RXA1 feedback output pin.
I Demodulated audio signal input pin.
I Test register control input pin.
TM-600 SERVICE MANUAL
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