X9250
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
(2) “I”: stands for the increment operation, SI held HIGH during active SCK phase (high).
(3) “D”: stands for the decrement operation, SI held LOW during active SCK phase (high).
Read Wiper Counter Register(WCR)
device type
identifier
device
addresses
instruction
opcode
WCR
addresses
wiper position
(sent by X9250 on SO)
CS
CS
Falling
Edge
Rising
Edge
W W W W W W W W
P P P P P P P P
A A
P P
0
1
0
1
0
0
1
0
0
1
0
0
1
0
1
0
7
6 5 4 3 2 1 0
Write Wiper Counter Register (WCR)
device type
identifier
device
addresses
instruction
opcode
WCR
addresses
Data Byte
(sent by Host on SI)
CS
CS
Falling
Edge
Rising
Edge
W W W W W W W W
P P P P P P P P
A A
P P
0
1
0
1
0
0
1
0
1
0
0
0
1
0
1
0
7
6 5 4 3 2 1 0
Read Data Register (DR)
device type
identifier
device
addresses
instruction DR and WCR
opcode addresses
Data Byte
(sent by X9250 on SO)
CS
CS
Falling
Edge
Rising
Edge
W W W W W W W W
P P P P P P P P
A A
R
1
R
0
P
1
P
0
0
1
0
1
0
0
1 0 1 1
1
0
7
6 5 4 3 2 1 0
Write Data Register (DR)
device type
identifier
device
addresses
instruction DR and WCR
Data Byte
(sent by host on SI)
opcode
addresses
CS
Falling
Edge
CS
Rising
Edge
HIGH-VOLTAGE
WRITE CYCLE
W W W W W W W W
P P P P P P P P
7 6 5 4 3 2 1 0
A A
1 0
R
1
R
0
P
1
P
0
0 1 0 1 0 0
1 1 0 0
Transfer Data Register (DR) to Wiper Counter Register (WCR)
device type
identifier
device
addresses
instruction DR and WCR
CS
Falling
Edge
CS
Rising
Edge
opcode
addresses
A A
1 0
R
1
R
0
P
1
P
0
0 1 0 1 0 0
1 1 0 1
Characteristics subject to change without notice. 8 of 21
REV 1.1.5 1/31/03
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XICOR [ XICOR INC. ]
