X9440 Datasheet, PDF (8/21 Pages) Intersil Corporation – Mixed Signal with SPI Interface

X9440
Figure 9. Memory Map
WCRO
WCR1
R0
R0
R1
R1
R2
R2
R3
R3
ACR0
R0
R1
R2
R3
ACR1
R0
R1
R2
R3
Figure 10. Instruction Set
Read Wiper Counter Register (WCR) or Analog Control Register (ACR)
Read the contents of the Wiper Counter Register or Analog Control Register pointed to by P₁ - P₀.
CS
Falling
Edge
device type
identifier
0101
device
addresses
0
0
A
1
A
0
instruction
opcode
1001
WCR/ACR
addresses
0
0
P
1
P
0
register data
(sent by slave on SDA)
0
0
D
5
D
4
D
3
D
2
D
1
D
0
CS
Rising
Edge
P1 P0: 00 - WCR0, 01 - WCR1
P1 P0: 10 - ACR0, 11 - ACR1
Write Wiper Counter Register (WCR) or Analog Control Register (ACR)
Write new value to the Wiper Counter Register or Analog Control Register pointed to by P₁ - P₀.
CS
Falling
Edge
device type
identifier
0101
device
addresses
0
0
A
1
A
0
instruction
opcode
1010
WCR/ACR
addresses
0
0
P
1
P
0
register data
(sent by master on SDA)
0
0
D
5
D
4
D
3
D
2
D
1
D
0
CS
Rising
Edge
P1 P0: 00 - WCR0, 01 - WCR1
P1 P0: 10 - ACR0, 11 - ACR1
Read Data Register (DR)
Read the contents of the Register pointed to by P₁ - P₀ and R₁ - R₀.
CS
Falling
Edge
device type
identifier
0101
device
addresses
0
0
A
1
A
0
instruction
opcode
1011
WCR/ACR/DR
addresses
RRPP
1010
register data
(sent by master on SDA)
0
0
D
5
D
4
D
3
D
2
D
1
D
0
CS
Rising
Edge
R1 R0: 00 - R0, 10 - R1
01 - R2, 11 - R3
Write Data Register (DR)
Write new value to the Register pointed to by P₁ - P₀ and R₁ - R₀.
device type device instruction WCR/ACR/DR
register data
CS _{identifier addresses opcode}
Falling
addresses (sent by master on SDA) ^CS
Falling
Edge
0
1
0
1
0
0
AA
10
1
1
0
0
R
1
R
0
P
1
P
0
0
0
D
5
D
4
D
3
D
2
D
1
D
0
Edge
HIGH-VOLTAGE
WRITE CYCLE
8
FN8200.0
March 28, 2005