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1745D–ATARM–04-Nov-05
AT91M55800A
21.0.7 ADC Mode Register
Register Name: ADC_MR
Access Type: Read/Write
Reset State: 0
Offset: 0x04
• TRGEN: Trigger Enable .
• TRGSEL: Trigger Selection
This field selects the hardware trigger.
• RES: Resolution.
31 30 29 28 27 26 25 24
– – – – – – – –
23 22 21 20 19 18 17 16
– – – – – – – –
15 14 13 12 11 10 9 8
– –
PRESCAL
7 6 5 4 3 2 1 0
– –
SLEEP RES TRGSEL TRGEN
TRGEN Selected TRGEN Code Label
0
Hardware triggers are disabled. Starting a conversion is only possible by
software.
ADC_TRGEN_DIS
1 Hardware trigger selected by TRGSEL field is enabled. ADC_TRGEN_EN
TTRGSEL Selected TRGSEL Code Label: ADC_B_TTRGSEL
0 0 0 TIOA0 ADC_TRG_TIOA0
0 0 1 TIOA1 ADC_TRG_TIOA1
0 1 0 TIOA2 ADC_TRG_TIOA2
0 1 1 TIOA3 ADC_TRG_TIOA3
1 0 0 TIOA4 ADC_TRG_TIOA4
1 0 1 TIOA5 ADC_TRG_TIOA5
1 1 0 External trigger ADC_TRG_EXT
111Reserved –
RES Selected RES Code Label
0 10-bit resolution ADC_10_BIT_RES
1 8-bit resolution ADC_8_BIT_RES