Hitachi H8S/2199 Hardware Manual page 528

Bits 3 to 0    Software Channel Select (SCH3 to SCH0): These bits select the analog input
channel that is converted by software triggering.
When channels AN0 to AN7 are used, appropriate pin settings must be made in port mode register
0 (PMR0). For pin settings, see section 24.2.6, Port Mode Register 0 (PMR0).
Bit 3 Bit 2
SCH3 SCH2
0 0
1
1 0
1
Notes: 1. If conversion is started by software when SCH3 to SCH0 are set to 11**, the conversion
result is undetermined. Hardware- or external-triggered conversion, however, will be
performed on the channel selected by HCH1 and HCH0.
2. * Don't care.
Rev. 1.0, 02/00, page 520 of 1141
Bit 1 Bit 0
SCH1 SCH0
0 0
1
1 0
1
0 0
1
1 0
1
0 0
1
1 0
1
* *
Analog Input Channel
AN0
AN1
AN2
AN3
AN4
AN5
AN6
AN7
AN8
AN9
ANA
ANB
No channel selected for software-triggered conversion
(Initial value)