參數(shù)資料
型號: CDB4382A
廠商: Cirrus Logic, Inc.
英文描述: 114 dB, 192 kHz 8-channel D/A Converter
中文描述: 114分貝192千赫8通道D / A轉(zhuǎn)換
文件頁數(shù): 29/47頁
文件大?。?/td> 685K
代理商: CDB4382A
DS618PP1
29
CS4382A
3.14.2.2
I
2
C Read
To read from the device, follow the procedure below while adhering to the control port Switching Spec-
ifications.
1.
Initiate a START condition to the I
2
C bus followed by the address byte. The upper 6 bits must be
001100. The seventh bit must match the setting of the AD0 pin, and the eighth must be 1. The eighth
bit of the address byte is the R/W bit.
2.
After transmitting an acknowledge (ACK), the device will then transmit the contents of the register
pointed to by the MAP. The MAP register will contain the address of the last register written to the MAP,
or the default address (see section 3.14.1) if an I
2
C read is the first operation performed on the device.
3.
Once the device has transmitted the contents of the register pointed to by the MAP, issue an ACK.
4.
If the INCR bit is set to 1, the device will continue to transmit the contents of successive registers.
Continue providing a clock and issue an ACK after each byte until all the desired registers are read, then
initiate a STOP condition to the bus.
5.
If the INCR bit is set to 0 and further I
2
C reads from other registers are desired, it is necessary to
initiate a repeated START condition and follow the procedure detailed from steps 1 and 2 from the I
2
C
Write instructions followed by step 1 of the I
2
C Read section. If no further reads from other registers are
desired, initiate a STOP condition to the bus.
SDA
SCL
001100
ADDR
AD0
R/W
Start
ACK
DATA
1-8
ACK
DATA
1-8
ACK
Stop
Note: If operation is a write, this byte contains the Memory Address Pointer, MAP.
Figure 17. Control Port Timing, I
2
C Mode
Note 1
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