Analog Input Control Register (Aicr) - Fujitsu MB91260B Series Hardware Manual

CHAPTER 14 8/10-BIT A/D CONVERTER
14.4.5

Analog Input Control Register (AICR)

The analog input control register controls analog input.
■ Analog Input Control Register (AICR: AICR0 to AICR2)
Bit15
AICR0
00007E
H
AN7E
Read/Write →
R/W
Initial value →
(0)
Bit15
AICR1
000086
H
-
Read/Write →
-
Initial value →
(X)
Bit15
AICR2
00008E
H
-
Read/Write →
-
Initial value →
(X)
R/W : Readable/Writable
: Initial value
Table 14.4-5 Functions of Each Bit in Analog Input Control Register (AICR)
Bit Name
(AICR0) AN7E to AN0E,
bit15 to bit8 AN9E, AN8E,
(AICR1, AICR2) AN11E, AN10E:
bit9, bit8 Analog input enable bits
(AICR1, AICR2)
Unused bits
bit15 to bit10
340
Bit14 Bit13 Bit12
AN6E AN5E AN4E
R/W R/W R/W
(0) (0) (0)
Bit14 Bit13 Bit12
- - -
- - -
(X) (X) (X)
Bit14 Bit13 Bit12
- - -
- - -
(X) (X) (X)
• When this bit is "0", analog input is disabled.
• When this bit is "1", analog input is enabled.
• Set the AICR register bit corresponding to the pin to be used as the
analog input pin to "1". When this is done, the value "0" will be read
from the PDR register.
• The read value is indeterminate.
• Writing to these bits have no effect to operation.
Bit11 Bit10 Bit9
AN3E AN2E AN1E
R/W R/W R/W
(0) (0) (0)
AN7E to AN0E
0 Analog input disable
1 Analog input enable
Bit11 Bit10 Bit9
- - AN9E
- - R/W
(X) (X) (0)
AN9E, AN8E
0 Analog input disable
1 Analog input enable
Bit11 Bit10 Bit9
- - AN11E AN10E
R/W
- -
(X) (X) (0)
AN11E, AN10E
0 Analog input disable
1 Analog input enable
Function
Bit8
AN0E
R/W
(0)
Analog input enable bits
Bit8
AN8E
R/W
(0)
Analog input enable bits
Bit8
R/W
(0)
Analog input enable bits