參數(shù)資料
型號(hào): ISD5216SERIES
英文描述: Single-Chip Voice Record/Playback Device
中文描述: 單芯片語音記錄/播放設(shè)備
文件頁數(shù): 72/83頁
文件大?。?/td> 758K
代理商: ISD5216SERIES
I5216 SERIES
Advanced Information
PRELIMINARY
Publication Release Date: November 30, 2001
- 72
Revision A1
Another common operation in the ISD5216 is the reading of digital data from the chip’s memory array
at a specific address. This requires the I
C interface Master to first send an address to the ISD5116
Slave device, and then receive data from the Slave in a single I
C operation. To accomplish this, the
data direction R/W bit must be changed in the middle of the command. The following example shows
the Master sending the Slave address, then sending a Command Byte and 2 bytes of address data to
the ISD5216, and then immediately changing the data direction and reading some number of bytes
from the chip’s digital array. An unlimited number of bytes can be read in this operation. The “N” not-
acknowledge cycle from the Master forces the end of the data transfer from the Slave. The following
example details the transfer explained in the section on page 41 of this datasheet.
Master Reads from the Slave after setting data address in Slave
(Write data address, READ Data)
S
W A
A
A
A
SLAVE ADDRESS
COMMAND BYTE
High ADDR. BYTE
Low ADDR. BYTE
acknowledgement
from slave
acknowledgement
from slave
acknowledgement
from slave
acknowledgement
from slave
R/W
From
Master
Start Bit
From
Master
S
R
A
A
A
N
P
8 BITS of DATA
SLAVE ADDRESS
8 BITS of DATA
8 BITS of DATA
R/W
From
Master
Start Bit
From
Master
Stop Bit
From
Master
acknowledgement
from slave
acknowledgement
from Master
not-acknowled
from Master
acknowledgement
from Master
From Master
From Slave
From Slave
From Slave
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