Fujitsu F2MC-8L F202RA Hardware Manual page 285

Table 12.4-2 Explanation of Functions of Each Bit in A/D Control Register 2 (ADC2)
Bit name
bit7 Unused bit
bit6, RESV4,RESV3:
bit5 Reserved bits
bit4 ADCK:
Selecting an input
clock bit
ADIE:
bit3 Enabling an interrupt
request bit
RESV2:
bit2
Reserved bit
EXT:
bit1 Bit for enabling
continuous activation
RESV1:
bit0
Reserved bit
• The value during read is not determined.
• Write does not affect operations.
• This bit is a reserved bit.
• Be sure to write 00 to these bits.
B
This bit is used to select an input clock for activation of A/D conversion
functions in the state where continuous activation is performed (EXT = 1).
When this bit is "0", the internal clock with an oscillation frequency (selected
using the output of a time-base timer) divided by 2
output of an 8/16-bit capture timer/counter (TO: 16-bit mode) is selected.
This bit is used to enable and disable the output of an interrupt to the CPU.
When this bit and the interrupt request flag bit (ADC1: ADI) are "1", an
interrupt request is output.
• This bit is a reserved bit.
• Be sure to write "0" to this bit.
This bit is used to select whether the A/D conversion functions are to be
activated with software or activated continuously in synchronization with an
input clock.
When this bit is "0", software activation with the bit for activating A/D
conversion (ADC1: AD) is enabled. When "1", continuous activation on the
rising edge of the clock selected using the bit for selecting an input clock
(ADC2: ADCK) is enabled.
• This bit is a reserved bit.
• Be sure to write "1" to this bit.
CHAPTER 12 A/D CONVERTER
Function
8
is selected. When "1", the
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