X9271-2.7 INTERSIL [Intersil Corporation], X9271-2.7 Datasheet - Page 11

• Manufacturer Part Number: X9271-2.7
• Description: Single Supply/Low Power/256-Tap/SPI Bus
• Manufacturer: INTERSIL [Intersil Corporation]

INSTRUCTION FORMAT
Read Wiper Counter Register (WCR)
Write Wiper Counter Register (WCR)
Read Data Register (DR)
Write Data Register (DR)
Transfer Wiper Counter Register (WCR) to Data Register (DR)
Falling
Falling
Falling
Falling
Falling
Edge
Edge
Edge
Edge
Edge
CS
CS
CS
CS
CS
Device Type
Device Type
Device Type
0
Device Type
0
0
0 1 0 1 0 0 A1 A0 1 1 0 0 RB RA P1 P0 D7 D 6 D5 D4 D3 D2 D1 D0
0
Device Type
Identifier
Identifier
Identifier
Identifier
Identifier
1
1
1
1
0
0
0
0
1 0 0 A1 A0 1 0 0 1 0 0
1 0 0 A1 A0 1 0 1 0 0 0
1 0 0 A1 A0 1 0 1 1 RB RA P1 P0 D7 D 6 D5 D4 D3 D2 D1 D0
1 0 0 A1 A0 1 1 1 0 RB
Addresses
Addresses
Addresses
Addresses
Addresses
Device
11
Device
Device
Device
Device
Instruction
Instruction
Opcode
Instruction
Instruction
Opcode
Instruction
Opcode
Opcode
Opcode
Addresses
Addresses
Addresses
DR/Bank
Addresses
DR/Bank
DR/Bank
DR/Bank
X9271
Addresses
DR/Bank
RA
0
0
0
0
0
W
W
C
R
C
R
7
7
(Sent by X9271 on SO)
0
(Sent by Host on SI)
W
W
C
R
C
R
6
6
Rising
Wiper Position
Edge
W
W
C
R
C
R
CS
5
5
(Sent by X9271 on SO)
Data Byte
(Sent by Host on SI)
W
W
C
R
C
R
4
4
W
W
C
R
C
R
Data Byte
3
3
HIGH-VOLTAGE
Data Byte
WRITE CYCLE
W
W
C
R
C
R
2
2
W
W
C
R
C
R
1
1
W
W
C
R
C
R
0
0
Rising
Rising
Edge
Edge
CS
CS
Rising
Edge
Rising
Edge
CS
CS
March 31, 2005
FN8174.1