Dtc Comparator Scan; Table 22.3 Cin7 To Cin0 Scan By Dtc Comparator Scan Function - Renesas H8S/2158 User Manual

Section 22 A/D Converter
22.4

DTC Comparator Scan

The DTC should be set as shown in table 22.3 to scan CIN7 to CIN0 using the DTC comparator
scan function.

Table 22.3 CIN7 to CIN0 Scan by DTC Comparator Scan Function

Register Bit
MRA 7, 6
5, 4
3, 2
1
0
MRB 7
6
SAR 23 to 0
DAR 23 to 0
CRAH 7 to 0
CRAL 7 to 0
DTCERA 3
KBCOMP 4
3
ADCSR 6
4
2 to 0
ADCR 7, 6
RAM —
Rev. 3.00 Jan 25, 2006 page 704 of 872
REJ09B0286-0300
Bit Name Description
SM1, SM0 00: SAR is fixed
DM1, DM0 00: DAR is fixed
MD1, MD0 01: Repeat mode
DTS 0: Destination area is repeat area
Sz 1: Word-size transfer
CHNE 0: Chain transfer is not performed
DISEL 0: An interrupt request is generated when the specified
number of data transfers are performed
— H'(FF)FFE0: ADDRA
—
Optional RAM address. Lower four bits should be 0.
Conversion results of CIN0 to CIN7 are written to eight
words leading from this address.
— H'FF
— H'FF
DTCEA3 1: Enables DTC activation by the A/D converter
SCANE 1: Enables comparator scan function
KBADE 1: Sets CIN7 to CIN0 as A/D converter input channel 0
ADIE 1: Enables an interrupt request generated by A/D
conversion end
SCAN 1: Selects scan mode
CH2 to CH0 000: Selects input channel 0
TRGS1, 00: Disables A/D conversion start according to an
TRGS0 external trigger
— (DAR): CIN0 conversion result
(DAR) + 2: CIN1 conversion result
(DAR) + 4: CIN2 conversion result
(DAR) + 6: CIN3 conversion result
(DAR) + 8: CIN4 conversion result
(DAR) + 10: CIN5 conversion result
(DAR) + 12: CIN6 conversion result
(DAR) + 14: CIN7 conversion result