Datasheet
MPL3115A2
Sensors
Freescale Semiconductor, Inc. 17
7 Register Descriptions
Table 9. Register Address Map
Register
Address
Name Reset
Reset
when
STBY
to
Active
Type
Auto-Increment
Address
Comment
0x00
Sensor Status Register
(STATUS)
(1)(2)
0x00 Yes R 0x01 Alias for DR_STATUS or F_STATUS
0x01
Pressure Data Out MSB
(OUT P_MSB)
(1)(2)
0x00 Yes R 0x02 0x01
Bits 12-19 of 20-bit
real-time Pressure
sample.
Root pointer to
Pressure and
Temperature FIFO
data.
0x02
Pressure Data Out CSB
(OUT_P_CSB)
(1)(2)
0x00 Yes R 0x03 Bits 4-11 of 20-bit real-time Pressure sample
0x03
Pressure Data Out LSB
(OUT_P _LSB)
(1)(2)
0x00 Yes R 0x04 Bits 0-3 of 20-bit real-time Pressure sample
0x04
Temperature Data Out MSB
(OUT_T_MSB)
(1)(2)
0x00 Yes R 0x05
Bits 4-11 of 12-bit real-time Temperature
sample
0x05
Temperature Data Out LSB
(OUT_T _LSB)
(1)(2)
0x00 Yes R 0x00
Bits 0-3 of 12-bit real-time Temperature
sample
0x06/0x00
Sensor Status Register
(DR_STATUS)
(1)(2)
0x00 Yes R 0x07 Data Ready status information
0x07
Pressure Data Out Delta MSB
(OUT_P_DELTA MSB)
(1)(2)
0x00 Yes R 0x08 Bits 12-19 of 20-bit Pressure change data
0x08
Pressure Data Out Delta CSB
(OUT_P_DELTA_CSB)
(1)(2)
0x00 Yes R 0x09 Bits 4-11 of 20-bit Pressure change data
0x09
Pressure Data Out Delta LSB
(OUT_P_DELTA_LSB)
(1)(2)
0x00 Yes R 0x0A Bits 0-3 of 20-bit Pressure change data
0x0A
Temperature Data Out Delta MSB
(OUT_T_DELTA_MSB)
(1)(2)
0x00 Yes R 0x0B Bits 4-11 of 12-bit Temperature change data
0x0B
Temperature Data Out Delta LSB
(OUT_T_DELTA_LSB)
(1)(2)
0x00 Yes R 0x06 Bits 0-3 of 12-bit Temperature change data
0x0C
Device Identification Register
(WHO_AM_I)
0xC4 No R 0x0D Fixed Device ID Number
0x0D
FIFO Status Register
(F_STATUS)
(1)(2)
0x00 Yes R 0x0E FIFO Status: No FIFO event detected
0X0E/0x01
FIFO 8-bit Data Access
(F_DATA)
(1)(2)
0x00 Yes R 0x0E FIFO 8-bit data access
0x0F
FIFO Setup Register
(F_SETUP)
(1)(3)
0x00 No R/W 0x10 FIFO setup
0x10
Time Delay
Register(TIME_DLY)
(1)(2)
0x00 Yes R 0x11 Time since FIFO overflow
0x11
System Mode Register
(SYSMOD)
(2)
0x00 Yes R 0x12 Current system mode
0x12
Interrupt Source Register
(INT_SOURCE)
(1)
0x00 No R 0x13 Interrupt status
0x13
PT Data Configuration Register
(PT_DATA_CFG)
(1)(3)
0x00 No R/W 0x14 Data event flag configuration
0x14
BAR Input in MSB
(BAR_IN_MSB)
(1)(3)
0xC5 No R/W 0x15
Barometric input for Altitude calculation
bits 8-15
0x15
BAR Input in LSB
(BAR_IN_LSB)
(1)(3)
0xE7 No R/W 0x16
Barometric input for Altitude calculation bits
0-7