Datasheet

999
SAM4S [DATASHEET]
11100E–ATARM–24-Jul-13
41.7.3 ADC Channel Sequence 1 Register
Name: ADC_SEQR1
Address: 0x40038008
Access: Read-write
This register can only be written if the WPEN bit is cleared in “ADC Write Protect Mode Register” on page 1015.
• USCHx: User Sequence Number x
The sequence number x (USCHx) can be programmed by the Channel number CHy where y is the value written in this field. The
allowed range is 0 up to 7. So it is only possible to use the sequencer from CH0 to CH7.
This register activates only if ADC_MR(USEQ) field is set to ‘1’.
Any USCHx field is taken into account only if ADC_CHSR(CHx) register field reads logical ‘1’ else any value written in USCHx
does not add the corresponding channel in the conversion sequence.
When configuring consecutive fields with the same value, the associated channel is sampled as many time as the number of con-
secutive values, this part of the conversion sequence being triggered by a unique event.
Configuring the same value in different fields leads to multiple samples of the same channel during the conversion sequence. This
can be done consecutively, or not, according to user needs.
31 30 29 28 27 26 25 24
– USCH8 – USCH7
23 22 21 20 19 18 17 16
– USCH6 – USCH5
15 14 13 12 11 10 9 8
– USCH4 – USCH3
76543210
– USCH2 – USCH1