Cypress S6J3200 Series, Manual

Page: 368 / 1355

CHAPTER 15:12-/10-/8-bit Analog to Digital Converter
S6J3200 Series Hardware Manual Document Number: 002-04852 Rev. *G 367
5.33.
Full Range Comparator Lower Threshold Registers
(ADC12Bn_FRCOL0 to 7)
When the 12-bit range comparator mode (ADC12Bn_CTRL.FRCMD = "1"), these registers are used for
12-bit range comparator.
If the 8-bit range comparator mode (ADC12Bn_CTRL.FRCMD = "0"), these registers are not used.
These registers specify the lower threshold values that can be selected for the 12-bit range comparator to
which the output of the A/D Converter is compared. Only ADC12Bn_FRCOL0 is described here. Other
registers (ADC12Bn_FRCOL1,..., ADC12Bn_FRCOL6 and ADC12Bn_FRCOL7) have similar bit fields.
REGISTER_NAME ADC12Bn_FRCOLi (i = 0 to 7)
OFFSET i*2
ACCESS_SIZE B H W
MULTIPLE 0:7
NUMERIC_TYPE
-
OTHER
-
Full Range Comparator Lower Threshold Register 0 (ADC12Bn_FRCOL0)
BIT_OFFSET 15 14 13 12 11 10 9 8
BIT_NAME Reserved FRCOL[11] FRCOL[10] FRCOL[9] FRCOL[8]
ACCESS_TYPE R0,W0 R/W R/W R/W R/W
PROT_TYPE
INITIAL_VALUE 0000 0 0 0 0
BIT_OFFSET 7 6 5 4 3 2 1 0
BIT_NAME FRCOL[7] FRCOL[6] FRCOL[5] FRCOL[4] FRCOL[3] FRCOL[2] FRCOL[1] FRCOL[0]
ACCESS_TYPE R/W R/W R/W R/W R/W R/W R/W R/W
PROT_TYPE
INITIAL_VALUE 0 0 0 0 0 0 0 0
[bit15:12] Reserved : Reserved bits
When writing, always write "0".
When reading, "0" is always read.
[bit11:0] FRCOL[11:0] : Full Range Comparator Lower Threshold value
The FRCOL bits define the lower comparison threshold of the range comparator 0.
The lower comparator compares the 12 bits, 10 bits or 8 bits of the A/D conversion result.
ADC12Bn_CTRL.RES[1:0] define this resolution.
−
If 12-bit resolution (ADC12Bn_CTRL.RES[1:0] = "x0"):
FRCOL[11:0] Compares the 12 bits of A/D conversion result.
−
If 10-bit resolution (ADC12Bn_CTRL.RES[1:0] = "01"):
FRCOL[11:10] Not used for 10-bit range comparator.