37.13.18 ADCCMPCON1 – ADC Digital Comparator 1 Control Register

This register controls the operation of Digital Comparator 1, including the generation of interrupts, comparison criteria to be used and provides status when a comparator event occurs.

Name:	ADCCMPCON1
Offset:	0x280
Reset:	0x00000000
Property:	-


Bit	31	30	29	28	27	26	25	24
	CVD_DATA[15:8]
Access	R/HS/HC	R/HS/HC	R/HS/HC	R/HS/HC	R/HS/HC	R/HS/HC	R/HS/HC	R/HS/HC
Reset	0	0	0	0	0	0	0	0


Bit	23	22	21	20	19	18	17	16
	CVD_DATA[7:0]
Access	R/HS/HC	R/HS/HC	R/HS/HC	R/HS/HC	R/HS/HC	R/HS/HC	R/HS/HC	R/HS/HC
Reset	0	0	0	0	0	0	0	0


Bit	15	14	13	12	11	10	9	8
			CMPINID0[5:0]
Access			R/HS/HC	R/HS/HC	R/HS/HC	R/HS/HC	R/HS/HC	R/HS/HC
Reset			0	0	0	0	0	0


Bit	7	6	5	4	3	2	1	0
	ENDCMP	DCMPGIEN	DCMPED	IEBTWN	IEHIHI	IEHILO	IELOHI	IELOLO
Access	R/W	R/W	R/HS/HC	R/W	R/W	R/W	R/W	R/W
Reset	0	0	0	0	0	0	0	0

Bits 31:16 – CVD_DATA[15:0] CVD Differential Output Data

In the CVD mode, this 16-bit field gets the CVD differential output data whenever a DCMPED interrupt is generated. The value in this field is ADCCON1.FRACT-compliant and always signed because it is the result of the subtraction between the CVD positive and negative measurements.

Bits 13:8 – CMPINID0[5:0] Comparator’s Analog Input ID (Identification) bits

When a DCMP interrupt is generated, this read only bit field contains the identification number of the analog input being monitored by the digital comparator #0.

Note: In normal ADC mode, only analog inputs [31:0] can be processed by the digital comparator module #0. The digital comparator #0 also supports the CVD mode, in which all second and third class channel IDs may be stored in the CMPINID0[5:0] field (which therefore must be 6 bit wide).

Value	Description
11111	Reserved
...	—
...	—
...	—
10110	AN22 is being monitored
10101	AN21 is being monitored
10100	AN20 is being monitored
10011	AN19 is being monitored
10010	AN18 is being monitored
10001	AN17 is being monitored
10000	AN16 is being monitored
01111	AN15 is being monitored
01110	AN14 is being monitored
01101	AN13 is being monitored
01100	AN12 is being monitored
01011	AN11 is being monitored
...	—
01000	AN8 is being monitored
00111	AN7 is being monitored
...	—
00001	AN1 is being monitored
00000	AN0 is being monitored

Bit 7 – ENDCMP Digital Comparator 1 Enable bit

Value	Description
1	Digital Comparator 1 is enabled
0	Digital Comparator 1 is not enabled, and the DCMPED status bit (ADCCMPCON[5]) is cleared

Bit 6 – DCMPGIEN Digital Comparator 1 Global Interrupt Enable bit

Value	Description
1	A Digital Comparator 1 interrupt is generated when the DCMPED status bit (ADCCMPCON[5]) is set
0	A Digital Comparator 1 interrupt is disabled

Bit 5 – DCMPED Digital Comparator 1 Output True Event Status bit

The logical conditions where the digital comparator becomes True are defined by the IEBTWN, IEHIHI, IEHILO, IELOHI and IELOLO bits.

Note: This bit is cleared by reading the AINID[4:0] bits or by disabling the Digital Comparator module (by setting ENDCMP to ‘0’).

Value	Description
1	Digital Comparator 1 output true event has occurred (output of comparator is ‘`1`’)
0	Digital Comparator 1 output is false (output of comparator is ‘`0`’)

Bit 4 – IEBTWN Between Low/High Digital Comparator 1 Event bit

Value	Description
1	Generate a digital comparator event when DATA[31:0] is less than DCMPHI[15:0] and greater than DCMPLO[15:0]
0	Do not generate a digital comparator event

Bit 3 – IEHIHI High/High Digital Comparator 1 Event bit

Value	Description
1	Generate a Digital Comparator 1 event when DCMPHI[15:0] bits are less than or equal to DATA[31:0] bits
0	Do not generate an event

Bit 2 – IEHILO High/Low Digital Comparator 1 Event bit

Value	Description
1	Generate a Digital Comparator 1 event when DATA[31:0] bits are less than DCMPHI[15:0] bits
0	Do not generate an event

Bit 1 – IELOHI Low/High Digital Comparator 1 Event bit

Value	Description
1	Generate a Digital Comparator 1 event when DCMPLO[15:0] bits are less than or equal to DATA[31:0] bits
0	Do not generate an event

Bit 0 – IELOLO Low/Low Digital Comparator 1 Event bit

Value	Description
1	Generate a Digital Comparator 1 event when DATA[31:0] bits are less than DCMPLO[15:0] bits
0	Do not generate an event