参数资料
型号: AD6654BBC
厂商: Analog Devices Inc
文件页数: 59/88页
文件大小: 0K
描述: IC ADC 14BIT W/6CH RSP 256CSPBGA
标准包装: 1
位数: 14
采样率(每秒): 92.16M
数据接口: 串行,并联
转换器数目: 1
功率耗散(最大): 2.5W
电压电源: 模拟和数字
工作温度: -25°C ~ 85°C
安装类型: 表面贴装
封装/外壳: 256-BGA,CSPBGA
供应商设备封装: 256-CSPBGA(17x17)
包装: 托盘
输入数目和类型: 1 个差分,单极
AD6654
Rev. 0 | Page 62 of 88
05156-078
MSBFIRST
SCS
MODE
SDI
SDO
0xaa
0x83
BLOCK START
ADDRESS
RD + COUNT (3)
aa
aa + 1
DATA FROM BLOCK START
ADDRESS
DATA FROM BLOCK START
ADDRESS + 1
DATA FROM BLOCK START
ADDRESS + 2
aa + 2
Figure 64. Serial Read of Three Bytes with MSBFIRST = 0 (All Words are Written or Read LSB First)
SPI MODE TIMING
In SPI mode, the SCLK should run only when data is being
transferred and SCS is logic low. If SCLK runs when SCS is logic
high, the internal shift register continues to run and instruction
words or data are lost. No external framing is necessary. The
SCS pin can be pulled low once for each byte of transfer, or kept
low for the whole length of the transfer.
SPI Write
Data on the SDI pin is registered on the rising edge of SCLK.
During a write, the serial port accumulates eight input bits
of data before transferring one byte to the internal registers.
Figure 65 and Figure 66 show one byte block transfer for
writing in MSBFIRST and LSBFIRST modes.
05156-079
MSBFIRST
SCLK
SDI
SDO
MODE
SCS
SMODE
A7
A6
A5
A4
A3
BLOCK END ADDRESS
BLOCK COUNT (Nx)
WRITE
A2
A1
A0
0
N6N5
N4N3
N2N1
N0
D7D6
D5D4
D3D2
D1D0
Figure 65. SPI Write MSBFIRST = 1
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