MCP3918 Datasheet, PDF (65/88 Pages) Microchip Technology – 3V Single-Channel Analog Front End

MCP3918
9.0 MCP3918 INTERNAL
REGISTERS
The addresses associated with the internal registers
are listed in Table 9-1. This section also describes the
registers in detail. All registers are 24-bit long registers,
which can be addressed and read separately.
The format of the data register (0x00) can be changed
through the WIDTH_CRC and WIDTH_DATA<1:0> bits
in the STATUSCOM register. The READ<1:0> and
WRITE bits define the groups and types of registers for
continuous read/write communication or looping on
address sets, as shown in Table 9-2.
TABLE 9-1: MCP3918 REGISTER MAP
Address
Name
Bits R/W
0x00
CHANNEL0
24
R
0x01
Unused
24
U
0x02
Unused
24
U
0x03
Unused
24
U
0x04
Unused
24
U
0x05
Unused
24
U
0x06
Unused
24
U
0x07
Unused
24
U
0x08
MOD
24
R/W
0x09
PHASE
24
U
0x0A
Unused
24
U
0x0B
GAIN
24
R/W
0x0C
STATUSCOM
24
R/W
0x0D
CONFIG0
24
R/W
0x0E
CONFIG1
24
R/W
0x0F
OFFCAL_CH0
24
R/W
0x10
GAINCAL_CH0
24
R/W
0x11
Unused
24
U
0x12
Unused
24
U
0x13
Unused
24
U
0x14
Unused
24
U
0x15
Unused
24
U
0x16
Unused
24
U
0x17
Unused
24
U
0x18
Unused
24
U
0x19
Unused
24
U
0x1A
Unused
24
U
0x1B
Unused
24
U
0x1C
Unused
24
U
0x1D
Unused
24
U
0x1E
Unused
24
U
0x1F
LOCK/CRC
24
R/W
Description
Channel 0 ADC Data <23:0>, MSB first
Unused
Unused
Unused
Unused
Unused
Unused
Unused
Delta-sigma Modulators Output Value
Phase Delay Configuration Register
Unused
Gain Configuration Register
Status and Communication Register
Configuration Register
Configuration Register
Offset Correction Register - Channel 0
Gain Correction Register - Channel 0
Unused
Unused
Unused
Unused
Unused
Unused
Unused
Unused
Unused
Unused
Unused
Unused
Unused
Unused
Security Register (password and CRC-16 on Register Map)
 2014 Microchip Technology Inc.
DS20005287A-page 65