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