Datasheet

1367
SAM4E [DATASHEET]
Atmel-11157D-ATARM-SAM4E16-SAM4E8-Datasheet_12-Jun-14
45.7.3 AFEC Extended Mode Register
Name: AFEC_EMR
Address: 0x400B0008 (0), 0x400B4008 (1)
Access: Read/Write
This register can only be written if the WPEN bit is cleared in the AFEC Write Protection Mode Register.
 CMPMODE: Comparison Mode
 CMPSEL: Comparison Selected Channel
If CMPALL = 0: CMPSEL indicates which channel has to be compared.
If CMPALL = 1: No effect.
 CMPALL: Compare All Channels
0: Only channel indicated in CMPSEL field is compared.
1: All channels are compared.
 CMPFILTER: Compare Event Filtering
Number of consecutive compare events necessary to raise the flag = CMPFILTER+1
When programmed to ‘0’, the flag rises as soon as an event occurs.
 RES: Resolution
31 30 29 28 27 26 25 24
–– SIGNMODE ––STMTAG
23 22 21 20 19 18 17 16
– – AFEMODE – RES
15 14 13 12 11 10 9 8
– – CMPFILTER – – CMPALL –
76543210
CMPSEL – CMPMODE
Value Name Description
0 LOW Generates an event when the converted data is lower than the low threshold of the window.
1 HIGH Generates an event when the converted data is higher than the high threshold of the window.
2 IN Generates an event when the converted data is in the comparison window.
3 OUT Generates an event when the converted data is out of the comparison window.
Value Name Description
0NO_AVERAGE12-bit resolution, AFEC sample rate is maximum (no averaging
).
1LOW_RES 10-bit res
olution, AFEC sample rate is maximum (no averaging).
2OSR4 13-bit resolution, AFEC sample rate divided by 4 (averaging).