參數(shù)資料
型號(hào)： CS4384-CQZR
廠商： Cirrus Logic Inc
文件頁數(shù)： 25/52頁
文件大?。?/td> 0K
描述： IC DAC 8CH 103DB 192KHZ 48-LQFP
標(biāo)準(zhǔn)包裝： 2,000
位數(shù)： 24
數(shù)據(jù)接口： 串行
轉(zhuǎn)換器數(shù)目： 8
電壓電源： 模擬和數(shù)字
功率耗散（最大）： 520mW
工作溫度： -40°C ~ 85°C
安裝類型： 表面貼裝
封裝/外殼： 48-LQFP
供應(yīng)商設(shè)備封裝： 48-LQFP
包裝： 帶卷 (TR)
輸出數(shù)目和類型： 8 電壓，單極
采樣率（每秒）： 216k
配用： 598-1525-ND - BOARD EVAL FOR CS4384 DAC
DS620F1
31
CS4384
4.14.2.2 IC Read
To read from the device, follow the procedure below while adhering to the control port Switching Specifica-
tions.
1.
Initiate a START condition to the IC 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 4.14.1) if an IC 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. Con-
tinue 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 IC 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 IC Write
instructions followed by step 1 of the IC Read section. If no further reads from other registers are de-
sired, initiate a STOP condition to the bus.
4.14.3
SPI Mode
In SPI Mode, data is clocked into the serial control data line, CDIN, by the serial control port clock, CCLK
(see Figure 27 for the clock to data relationship). There is no AD0 pin. Pin CS is the chip select signal and
is used to control SPI writes to the control port. When the device detects a high to low transition on the
AD0/CS pin after power-up, SPI Mode will be selected. All signals are inputs and data is clocked in on the
rising edge of CCLK.
4.14.3.1 SPI Write
To write to the device, follow the procedure below while adhering to the control port Switching Specifica-
tions in Section 2.
1.
Bring CS low.
2.
The address byte on the CDIN pin must then be 00110000.
3.
Write to the memory address pointer, MAP. This byte points to the register to be written.
4.
Write the desired data to the register pointed to by the MAP.
5.
If the INCR bit (see Section 4.14.1) is set to 1, repeat the previous step until all the desired registers
are written, then bring CS high.
SD A
SC L
0 01100
AD DR
AD 0
R/W
Sta rt
AC K
DAT A
1-8
AC K
DA TA
1-8
ACK
Stop
N o te : If o pe ra tion is a w rite , th is b yte c on ta in s the M e m o ry A d d re s s P o in te r, M A P .
No te 1
Figure 26. Control Port Timing, IC Mode
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