SC9821C
1.1. 3 SC9821C registers read•write protocol
A single register read command:
Where, S is Start Signal, P is Stop Signal, DevReadCmd is read command (suppose Guest’s address is
1, and DveReadCmd is: 0x81), RegAddr is the address of the register, Waiting is the waiting time of Host,
StartAddr is the address of start register when read constantly.
Register single write command:
1.2 Interfaces with CD•DSP
1) 24•bit Bck, the MSB send first, and the data is right flush, the word selection signal of right channel is low
(EIAJ•24)
2) 24•bit Bck, the MSB send first, and the data is left flush, the word selection signal of right channel is high
(IIS•24)
3) 16•bit Bck, the MSB send first, the word selection signal of right channel is low (EIAJ•16)/ the word
selection signal of right channel is high (IIS•16)
2. SHORT COMMAND REGISTER
000:
PwrReset
Soft reset command. The chip is in the reset status after receives this
command, until HOST send the UnPwrReset command.
111:
001:
110:
100:
011:
UnPwrReset
PowerOn
Soft release reset command.
Soft power on command.
PowerOff
Soft power off command.
EspMode
Enter the Esp status command.
Exit the Esp status command.
UnEspMode
HANGZHOU SILAN MICROELECTRONICS CO.,LTD
Http:
REV:1.0
2006.07.21
www.silan.com.cn
Page 8 of 18
SILAN [ SILAN MICROELECTRONICS JOINT-STOCK ]
