MRV-F345
Description of IC Terminal
No. Symbol I/O Terminal Description
1 VSS I GND connect terminal.
2 XIN I
3 XOUT O
4 TEST I TEST terminal.
5 VDD - Power supply terminal. (4.5 to 5.5V)
6 I2C_SDA O I2C_SDA output terminal.
7 I2C_SCL O I2C_SCL output terminal.
8 /RESET I RESET terminal.
9 /BAT_DET I BAT-DET terminal.
10 /I_LIMIT I I_LIMIT input terminal.
11 FAN1 O FAN power supply control terminal. (9V)
12 FAN2 O FAN power supply control terminal. (12V)
13 X20_1 I x20 switch input terminal. (ch 1/2)
14 CMD_DOUT O AMP LINK data output terminal.
15 CMD_DIN I AMP LINK data input terminal.
16 CMD_CLK I AMP LINK clock terminal.
17 X20_2 I x20 switch input terminal. (ch 3/4)
18 POWER_P1 O Power supply circuit control signal output terminal -1.
19 POWER_P2 O Power supply circuit control signal output terminal -2.
20 POWER_P3(PULL-UP)
21
22
23 /VOL_DET I VOL-DET terminal. (Secondary voltage, DC-OFFSET)
24 NC(PULL-UP) - Pull-up connect terminal.
25 OUT_THRM I Output Thermal detect terminal.
26 AD_KEY I KEY level input terminal.
27 AD_FREQ1 I Frequency display input terminal. (ch 1/2)
28 AD_VOLT I Voltage signal input terminal.
29 AD_FREQ2 I Frequency display input terminal. (ch 3/4)
30 AD_THRM I Temperature signal input terminal.
31 /AD_THRM_DET I Temperature detection input terminal.
32 LED O LED (Back Light) ON output terminal.
33 MUTE O MUTE output terminal.
34 VAREF - Analog reference power supply terminal for A/D converter.
35 AVDD - Power supply terminal for A/D converter.
36 AVSS - Analog reference GND terminal for A/D converter.
37 VOL_CE1 O E-VOL chip enable terminal. (ch 1/2)
38 VOL_CE2 O E-VOL chip enable terminal. (ch 3/4)
39 VOL_CL O E-VOL synchronous clock terminal.
40 VOL_DI O E-VOL transmission data terminal.
41 LCD_CE O LCD driver chip enable terminal.
42 LCD_DI O LCD driver transmission data terminal.
43 LCD_CLK O LCD driver synchronous clock terminal.
44 LCD_INH O LCD driver INH terminal.
Crystal OSC connect terminal.
NC(PULL-UP)
- Pull-up connect terminal.
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