参数资料
型号: SI3232PPTX-EVB
厂商: Silicon Laboratories Inc
文件页数: 79/128页
文件大小: 0K
描述: BOARD EVAL W/DISCRETE INTERFACE
标准包装: 1
系列: ProSLIC®
主要目的: 接口,模拟前端(AFE)
已用 IC / 零件: Si3232
已供物品: 板,CD
Si3232
54
Preliminary Rev. 0.96
Not
Recommended
fo
r N
ew
D
esi
gn
s
In Figure 28, the CID field is 0. As this field is decremented (LSB to MSB order), the value decrements for each SDI
down the line. The BRDCST, R/W, and REG/RAM bits remain unchanged as the control word passes through the
entire chain. The odd SDIs are internal to the device and represent the SDI to SDI_THRU connection between
channels of the same device. A unique CID is presented to each channel, and the channel receiving a CID value of
0 is the target of the operation (channel 0 in this case). The last line of Figure 28 illustrates that in broadcast mode,
all bits are passed through the chain without permutation.
Figure 28. Sample SPI Control Word to Address Channel 0
Figure 29. Register Write Operation via an 8-Bit SPI Port
SPI Control Word
BRDCST
R/W
REG/RAM
Reserved
CID[0]
CID[1]
CID[2]
CID[3]
0
A
B
C
0
A
B
C
1
0
A
B
C
0
1
0
A
B
C
1
0
1
0
A
B
C
0
1
0
A
B
C
1
0
1
A
B
C
D
E
F
G
SDI0
SDI1 (Internal)
SDI2
SDI3 (Internal)
SDI 0-15
SDI15
SDI0-15
CONTROL
ADDRESS
DATA [7:0]
SCLK
SDI
SDO
Hi-Z
CS
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