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X9400 Datasheet(PDF) 8 Page - Intersil Corporation

Part # X9400
Description  Low Noise/Low Power/SPI Bus
PDF  21 Pages
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Manufacturer  INTERSIL [Intersil Corporation]
Direct Link  http://www.intersil.com/cda/home
Logo INTERSIL - Intersil Corporation

X9400 Datasheet(HTML) 8 Page - Intersil Corporation

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8
FN8189.1
March 31, 2005
Instruction Format
Notes: (1) “A1 ~ A0”: stands for the device addresses sent by the master.
(2) WPx refers to wiper position data in the Counter Register
(3) “I”: stands for the increment operation, SI held HIGH during active SCK phase (high).
(4) “D”: stands for the decrement operation, SI held LOW during active SCK phase (high).
Read Wiper Counter Register (WCR)
Write Wiper Counter Register (WCR)
Read Data Register (DR)
Write Data Register (DR)
Transfer Data Register (DR) to Wiper Counter Register (WCR)
Transfer Wiper Counter Register (WCR) to Data Register (DR)
CS
Falling
Edge
device type
identifier
device
addresses
instruction
opcode
WCR
addresses
wiper position
(sent by X9400 on SO)
CS
Rising
Edge
010
100
A
1
A
0
100
1
00
P
1
P
0
00
W
P
5
W
P
4
W
P
3
W
P
2
W
P
1
W
P
0
CS
Falling
Edge
device type
identifier
device
addresses
instruction
opcode
WCR
addresses
Data Byte
(sent by Host on SI)
CS
Rising
Edge
010
100
A
1
A
0
101
0
00
P
1
P
0
00
W
P
5
W
P
4
W
P
3
W
P
2
W
P
1
W
P
0
CS
Falling
Edge
device type
identifier
device
addresses
instruction
opcode
DR and WCR
addresses
Data Byte
(sent by X9400 on SO)
CS
Rising
Edge
01010
0
A
1
A
0
1011
R
1
R
0
P
1
P
0
00
W
P
5
W
P
4
W
P
3
W
P
2
W
P
1
W
P
0
CS
Falling
Edge
device type
identifier
device
addresses
instruction
opcode
DR and WCR
addresses
Data Byte
(sent by host on SI)
CS
Rising
Edge
HIGH-VOLTAGE
WRITE CYCLE
01010 0
A
1
A
0
110 0
R
1
R
0
P
1
P
0
00
W
P
5
W
P
4
W
P
3
W
P
2
W
P
1
W
P
0
CS
Falling
Edge
device type
identifier
device
addresses
instruction
opcode
DR and WCR
addresses
CS
Rising
Edge
0101 00
A
1
A
0
11 01
R
1
R
0
P
1
P
0
CS
Falling
Edge
device type
identifier
device
addresses
instruction
opcode
DR and WCR
addresses
CS
Rising
Edge
HIGH-VOLTAGE
WRITE CYCLE
010 100
A
1
A
0
111 0
R
1
R
0
P
1
P
0
X9400



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