
R01UH0336EJ0102 Rev.1.02
Page 1299 of 1538
Jul 17, 2014
V850E2/PG4-L
Section 23 A/D Converter
(2)
Diagnosis of Channel Multiplexer
The ADCAn can diagnose if the switching and selection of channels work
properly.
Each channel is assigned 1 of 3 reference voltages. The reference voltage
values can be altered using ADCAnDGCTL0.ADCAnPSEL[2:0].
To diagnose the channel multiplexer, different reference voltages can be input
to the channels.
The diagnosis voltage of channel multiplexer diagnostic is changed as the
procesure below.
1. If conversion is under processing (ADCAnCTL0.ADCAnCE bit = 1), stop it
(ADCAnCTL0.ADCAnCE bit = 0).
2. Set ADCAnDGCTL0.ADCAnPSEL[2:0] bits to 011
B
.
3. Set ADCAnDGCTL0.ADCAnPSEL[2:0] bits to diagnosis voltage.
Table 23-5
Assignment of Reference Voltages to Channels
Reference Voltage
Channel
DIAGOUT0
18, 15, 12, 9, 6, 3
DIAGOUT1
16, 13, 10, 7, 4, 1
DIAGOUT2
17, 14, 11, 8, 5, 2
Содержание V850 Series
Страница 1556: ...V850E2 PG4 L R01UH0336EJ0102 Back Cover ...