1.2.1 System Initialization After power is first applied to the CS5521/22/2324/28 devices, the user should wait f" />
參數資料
型號: CS5522-ASZR
廠商: Cirrus Logic Inc
文件頁數: 10/56頁
文件大?。?/td> 0K
描述: IC ADC 24BIT 2CH 20-SSOP
標準包裝: 1,000
位數: 24
數據接口: 串行
轉換器數目: 1
功率耗散(最大): 14.8mW
電壓電源: 模擬和數字
工作溫度: -40°C ~ 85°C
安裝類型: 表面貼裝
封裝/外殼: 20-SSOP(0.209",5.30mm 寬)
供應商設備封裝: 20-SSOP
包裝: 帶卷 (TR)
輸入數目和類型: 2 個差分,單極;2 個差分,雙極
CS5521/22/23/24/28
18
DS317F8
1.2.1 System Initialization
After
power
is
first
applied
to
the
CS5521/22/2324/28 devices, the user should wait
for the oscillator to start before attempting to com-
municate with the converter. If a 32.768 kHz crys-
tal is used, this may be 500 milliseconds.
The initialization sequence should be as follows:
Initialize the serial port by sending the port initial-
ization sequence of 15 bytes of all 1's followed by
one byte with the following bit contents '1111 110'.
This sequence places the chip in the command
mode where it waits for a valid command to be
written. The first command should be to perform a
system reset. This is accomplished by writing a
logic 1 to the RS (Reset System) bit in the configu-
ration register. After a reset the RV bit is set until
the configuration register is read. The user must
then write a logic 0 to the RS bit to take the part out
of reset mode. Any other bits written to the config-
uration register at this time will be lost. The con-
figuration register must be written again once RS=
0 to set any other bits to their desired settings.
After a reset, the on-chip registers are initialized to
the following states:
configuration register:
000040(H)
offset registers:
000000(H)
gain registers:
400000(H)
channel setup registers:
000000(H)
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