Cypress S6J3200 Series, Руководство пользователя

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CHAPTER 15:12-/10-/8-bit Analog to Digital Converter
S6J3200 Series Hardware Manual Document Number: 002-04852 Rev. *G 365
5.32.
Full Range Comparator Upper Threshold Registers
(ADC12Bn_FRCOH0 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 upper 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_FRCOH0 is described here. Other
registers (ADC12Bn_FRCOH1,..., ADC12Bn_FRCOH6 and ADC12Bn_FRCOH7) have similar bit fields.
REGISTER_NAME ADC12Bn_FRCOHi (i = 0 to 7)
OFFSET i*2
ACCESS_SIZE B H W
MULTIPLE 0:7
NUMERIC_TYPE
-
OTHER
-
Full Range Comparator Upper Threshold Register 0 (ADC12Bn_FRCOH0)
BIT_OFFSET 15 14 13 12 11 10 9 8
BIT_NAME Reserved FRCOH[11] FRCOH[10] FRCOH[9] FRCOH[8]
ACCESS_TYPE R0,W0 R/W R/W R/W R/W
PROT_TYPE
INITIAL_VALUE 0000 1 1 1 1
BIT_OFFSET 7 6 5 4 3 2 1 0
BIT_NAME FRCOH[7] FRCOH[6] FRCOH[5] FRCOH[4] FRCOH[3] FRCOH[2] FRCOH[1] FRCOH[0]
ACCESS_TYPE R/W R/W R/W R/W R/W R/W R/W R/W
PROT_TYPE
INITIAL_VALUE 1 1 1 1 1 1 1 1
[bit15:12] Reserved : Reserved bits
When writing, always write "0".
When reading, "0" is always read.
[bit11:0] FRCOH[11:0] : Full Range Comparator Upper Threshold value
The FRCOH bits define the upper comparison threshold of the range comparator 0.
The upper 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"):
FRCOH[11:0] Compares the 12 bits of A/D conversion result.
−
If 10-bit resolution (ADC12Bn_CTRL.RES[1:0] = "01"):
FRCOH[11:10] Not used for 10-bit range comparator.