8 LRCK I Left right clock
9 /RST I Reset
10 AINL I Analog input L
11 VQ O Quiescent voltage
12 AINR I Analog input R
13 VA I Analog power
14 REF_GND I GND
15 FILT+ I Positive voltage reference
16 M1 I Mode selection 1
3.5.4 function introduction to 74HCU04
1. Description
The 74HCU04 (U205) is a high-speed Si-gate CMOS device and is pin compatible with low power
Schottky TTL (LSTTL). It is specified in compliance with JEDEC standard no. 7A.
The 74HCU04 is a general purpose hex inverter. Each of the six inverters is a single stage
2. Features
◆ Output capability: Standard
◆ ICC category: SSI
3. PIN CONFIGURATION
PIN NO. SYMBOL I/O Description
1, 3, 5, 9, 11, 13
1Y to 6Y O data outputs
7 GND ground (0 V)
14 VCC positive supply voltage
3.5.5 Function introduction to FLASH
1. DESCRIPTION
FLASH (U207) is a 16Mbit FLASH memorizer, and the damage of U214 may cause troubles, such as
power not on, no disc reading and power on picture mosaic.
2. PIN DESCRIPTION
Pin Name Function Voltage (when no disc) Data direction
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