Datasheet

© 2011 Microchip Technology Inc. DS22192D-page 41
MCP3901
7.0 INTERNAL REGISTERS
The addresses associated with the internal registers
are listed below. A detailed description of the registers
follows. All registers are 8-bit long and can be
addressed separately. Read modes define the groups
and types of registers for continuous read
communication or looping on address sets.
.
TABLE 7-2: REGISTER MAP GROUPING
FOR CONTINUOUS READ
MODES
TABLE 7-1: REGISTER MAP
Address Name Bits R/W Description
0x00 DATA_CH0 24 R Channel 0 ADC Data <23:0>, MSB First
0x03 DATA_CH1 24 R Channel 1 ADC Data <23:0>, MSB First
0x06 MOD 8 R/W Delta-Sigma Modulators Output Register
0x07 PHASE 8 R/W Phase Delay Configuration Register
0x08 GAIN 8 R/W Gain Configuration Register
0x09 STATUS/COM 8 R/W Status/Communication Register
0x0A CONFIG1 8 R/W Configuration Register 1
0x0B CONFIG2 8 R/W Configuration Register 2
Function Address
READ<1:0>
= 01 = 10 = 11
DATA_CH0
0x00
GROUP
TYPE
LOOP ENTIRE REGISTER MAP
0x01
0x02
DATA_CH1
0x03
GROUP
0x04
0x05
MOD 0x06
GROUP
TYPE
PHASE 0x07
GAIN 0x08
STATUS/
COM
0x09
GROUP
CONFIG1 0x0A
CONFIG2 0x0B