Sherwood RX-4109 User Manual download pdf (Page 6)

Pin No.

Pin Name Opeation Description

Assign

1 Protection

Input for detecting

"PROTECTION" condition.

Protect in (High → Power off)

2 Volume_Encoder A Input for main volume up/down. Volume encoder up/down

3 Volume_Encoder B Input for main volume up/down. Volume encoder up/down

4 Remote control Input for remocon data. Remote control input

5 Power Check Input for power down.

AC CORD ON/OFF CHECK

(LOW=AC CORD OFF)

6 Reset Input for resetting the CPU

7 FLMD0 Flash memory programming mode setting

8 V_REC Output for "Video REC ON/OFF"

9 T_REC Output for "Tape REC ON/OFF"

10 REGC

Connecting regulator output stabilization

capacitance for internal operation.

11 GND GND

12 VDD +5V power supply

13 NC

14 Tuned Input for detecting "TUNED" condition. Tuned signal in (Low=Tuned OK)

15 L-MUTE Output for Front L/R MUTE

16 ST/BY LED Output to drive standby LED

17 NC open

FLT B+

ST_BY RLY

Output for "power relay & FLT ON/OFF" Output for "power relay & FLT ON/OFF" O

19 LC75343_CE Output for chip enable of LC75343 IC

20 PLL_CE Tuner PLL Chip enable

21 FLT_CE Driver IC Chip enable

22 LC75343_CLK Output for clock of LC75343 IC

23 LC75343_DATA Output for data of LC75343 IC

24 PLL_DO & FLT_DO Tuner PLL & Driver IC Data out

25 PLL_DI Tuner PLL Data in

26 PLL_CLK & FLT_CLK Tuner PLL Clock & Driver IC Data out

27 AVREF

Reference voltage.

(Connected to +5V, Not VDD.)

28 GND GND GND

29 KEY1 Data input for key scan.

KEY1 Data input for key scan.

3. Pin Functions

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Sherwood RX-4109 User Manual Page 6

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