参数资料
型号: AS3517
厂商: ams
文件页数: 24/94页
文件大小: 0K
描述: IC CODEC AFE AUDIO STER 81-CTBGA
标准包装: 250
类型: 音频编解码器
应用: 便携式音频,电话
安装类型: 表面贴装
封装/外壳: 81-TFBGA
供应商设备封装: 81-CTBGA(9x9)
包装: 托盘
AS3517 V17
Data Sheet, Confidential
2003-2007, austriamicrosystems AG, 8141 Unterpremstaetten, Austria-Europe. All Rights Reserved.
www.austriamicrosystems.com
9.1.7
2-Wire-Serial Control Interface
General
There is an I2C slave block implemented to have access to 64 byte of setting information.
The I2C address is: Adr_Group8 - audio processors
8Ch_write
8Dh_read
Protocol
Table 24 I2C Symbol Definitions
Symbol
Definition
R/W (AS3517 Slave)
Note
S
Start condition after stop
R
1 bit
Sr
Repeated start
R
1 bit
DW
Device address for write
R
1000 1100b (8Ch)
DR
Device address for read
R
1000 1101b 8Dh)
WA
Word address
R
8 bit
A
Acknowledge
W
1 bit
N
No Acknowledge
R
1 bit
reg_data
Register data/write
R
8 bit
data (n)
Register data/read
W
8 bit
P
Stop condition
R
1 bit
WA++
Increment word address internally
R
During acknowledge
AS3517 (=slave) receives data
AS3517 (=slave) transmits data
Figure 12 Byte Write
Figure 13 Page Write
Byte Write and Page Write formats are used to write data to the slave.
The transmission begins with the START condition, which is generated by the master when the bus is in IDLE state (the bus is free). The
device-write address is followed by the word address. After the word address any number of data bytes can be sent to the slave. The
word address is incremented internally, in order to write subsequent data bytes on subsequent address locations.
For reading data from the slave device, the master has to change the transfer direction. This can be done either with a repeated START
condition followed by the device-read address, or simply with a new transmission START followed by the device-read address, when the
bus is in IDLE state. The device-read address is always followed by the 1st register byte transmitted from the slave. In Read Mode any
number of subsequent register bytes can be read from the slave. The word address is incremented internally.
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