µPC1857A
CONTENTS
1. PIN FUNCTIONS.............................................................................................................................. 7
2. ATTENTIONS.................................................................................................................................... 14
3. I2C BUS INTERFACE...................................................................................................................... 15
3.1 Data Transfer.......................................................................................................................................... 15
3.1.1 Start condition ............................................................................................................................ 15
3.1.2 Stop condition ............................................................................................................................ 16
3.1.3 Data transfer .............................................................................................................................. 16
3.2 Data Transfer Format............................................................................................................................. 17
3.2.1 1-byte data transfer.................................................................................................................... 18
3.2.2 Successive data transfer............................................................................................................ 18
3.2.3 Acknowledge.............................................................................................................................. 18
4. EXPLANATION OF EACH COMMAND ........................................................................................ 19
4.1 Subaddress List ..................................................................................................................................... 19
4.2 Initialization ............................................................................................................................................ 20
4.3 Surround Function................................................................................................................................. 20
4.4 Explanation of Each Command ............................................................................................................ 21
4.4.1 Mute ........................................................................................................................................... 21
4.4.2 Output selection ......................................................................................................................... 21
4.4.3 Surround mode .......................................................................................................................... 22
4.4.4 Surround effect .......................................................................................................................... 23
4.4.5 Mix ............................................................................................................................................. 23
4.4.6 Automatic increment .................................................................................................................. 24
4.4.7 Volume level .............................................................................................................................. 25
4.4.8 Balance ...................................................................................................................................... 25
4.4.9 Bass level................................................................................................................................... 26
4.4.10 Treble level ................................................................................................................................ 26
5. ELECTRICAL CHARACTERISTICS ............................................................................................... 27
6. CHARACTERISTIC CURVES.......................................................................................................... 33
6.1 Frequency Characteristic in Each Mode.............................................................................................. 33
6.2 Control Characteristic ........................................................................................................................... 36
6.3 I/O Characteristic ................................................................................................................................... 38
7. PACKAGE DRAWING ..................................................................................................................... 39
8. RECOMMENDED SOLDERING CONDITIONS ............................................................................. 40
6