參數(shù)資料
型號: EVAL-ADAV803EBZ
廠商: Analog Devices Inc
文件頁數(shù): 25/60頁
文件大?。?/td> 0K
描述: BOARD EVALUATION FOR ADAV803
標(biāo)準(zhǔn)包裝: 1
主要目的: 接口,模擬前端(AFE)
已用 IC / 零件: ADAV803
已供物品:
相關(guān)產(chǎn)品: ADAV803ASTZ-ND - IC CODEC AUDIO R-DVD 3.3V 64LQFP
ADAV803ASTZ-REEL-ND - IC CODEC AUDIO R-DVD 3.3V 64LQFP
ADAV803
Rev. A | Page 31 of 60
0
01
00
AD1
AD0
1
D7
AD1
AD0
D6
D5
D4
D3
D2
D1
D0
1
0
1
0
X
00
1
0
04
75
6
-05
4
SCL
SDA
START BY
MASTER
SCL
(CONTINUED)
SDA
(CONTINUED)
FRAME 1
CHIP ADDRESS BYTE
FRAME 3
CHIP ADDRESS BYTE
FRAME 4
REGISTER DATA
FRAME 2
REGISTER ADDRESS BYTE
REPEATED START
BY MASTER
ACK. BY
ADAV803
ACK. BY
ADAV803
ACK. BY
ADAV803
STOP BY
MASTER
ACK. BY
ADAV803
R/W
Figure 54. Reading from the DAC Left Volume Register in I2C
BLOCK READS AND WRITES
The ADAV803 provides the user with the ability to write to or
read from a block of registers in one continuous operation. To
use this feature, the user has to continue providing data frames
before the stop condition. For a write operation, the register
address is automatically incremented with each additional
frame and the register data is written to that register address.
For a read operation, the register address is automatically
incremented with each additional frame, and the register data is
clocked out on that frame.
Care should be exercised when using the block read or block
write modes. For most cases, block reading or writing to a
register automatically increments the register address to point
to the next register. The exceptions to this case are the indirect
memory address registers, transmitter user bit and receiver user
bit data buffers. Using a block read or write to access these
registers does not update the absolute register address, but
instead updates the buffer address to provide the next value in
the buffer.
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