Freescale Semiconductor FRDM-FXS-MULTI 데이터 시트
MPL3115A2
Sensors
20
Freescale Semiconductor, Inc.
7.1.2.1
Data Registers with F_MODE = 00 (FIFO Disabled)
When the FIFO subsystem data output register driver is disabled (F_MODE = 00), the register indicates the real-time status
information of the sample data.
PDR and POW flag generation is required for the Pressure/Altitude event flag generator to be enabled (PDEFE = 1) in the PT
Data Configuration Register (PT_DATA_CFG).
TDR and TOW flag generation is required for the Temperature event flag generator to be enabled (TDEFE = 1) in the PT Data
Configuration Register (PT_DATA_CFG).
PTDR and PTOW flag generation requires the DREM event flag generator to be enabled in the PT Data Configuration Register
(PT_DATA_CFG).
Table 12. DR_STATUS Register
7
6
5
4
3
2
1
0
R
PTOW
POW
TOW
0
PTDR
PDR
TDR
0
W
Reset
0
0
0
0
0
0
0
0
Table 13. DR_STATUS Bit Descriptions
Name
Description
PTOW
Pressure/Altitude OR Temperature data overwrite. PTOW is set to 1 whenever new data is acquired before completing the
retrieval of the previous set. This event occurs when the content of at least one data register (i.e. OUT_P, OUT_T) has been
overwritten. PTOW is cleared when the high-bytes of the data (OUT_P_MSB or OUT_T_MSB) are read, when F_MODE is
zero. PTOW is cleared by reading F_DATA register when F_MODE > 0.
Default value: 0
0: No data overwrite has occurred
1: Previous Pressure/Altitude or Temperature data was overwritten by new Pressure/Altitude or Temperature data before it
was read
retrieval of the previous set. This event occurs when the content of at least one data register (i.e. OUT_P, OUT_T) has been
overwritten. PTOW is cleared when the high-bytes of the data (OUT_P_MSB or OUT_T_MSB) are read, when F_MODE is
zero. PTOW is cleared by reading F_DATA register when F_MODE > 0.
Default value: 0
0: No data overwrite has occurred
1: Previous Pressure/Altitude or Temperature data was overwritten by new Pressure/Altitude or Temperature data before it
was read
POW
Pressure/Altitude data overwrite. POW is set to 1 whenever a new Pressure/Altitude acquisition is completed before the
retrieval of the previous data. When this occurs the previous data is overwritten. POW is cleared anytime OUT_P_MSB
register is read, when F_MODE is zero. POW is cleared by reading F_DATA register when F_MODE > 0.
Default value: 0
0: No data overwrite has occurred
1: Previous Pressure/Altitude data was overwritten by new Pressure/Altitude data before it was read
retrieval of the previous data. When this occurs the previous data is overwritten. POW is cleared anytime OUT_P_MSB
register is read, when F_MODE is zero. POW is cleared by reading F_DATA register when F_MODE > 0.
Default value: 0
0: No data overwrite has occurred
1: Previous Pressure/Altitude data was overwritten by new Pressure/Altitude data before it was read
TOW
Temperature data overwrite. TOW is set to 1 whenever a new Temperature acquisition is completed before the retrieval of
the previous data. When this occurs the previous data is overwritten. TOW is cleared anytime OUT_T_MSB register is read,
when F_MODE is zero. TOW is cleared by reading F_DATA register when F_MODE > 0.
Default value: 0
0: No data overwrite has occurred
1: Previous Temperature data was overwritten by new Temperature data before it was read
the previous data. When this occurs the previous data is overwritten. TOW is cleared anytime OUT_T_MSB register is read,
when F_MODE is zero. TOW is cleared by reading F_DATA register when F_MODE > 0.
Default value: 0
0: No data overwrite has occurred
1: Previous Temperature data was overwritten by new Temperature data before it was read
PTDR
Pressure/Altitude OR Temperature data ready. PTDR signals that a new acquisition for either Pressure/Altitude or
Temperature is available. PTDR is cleared anytime OUT_P_MSB or OUT_T_MSB register is read, when F_MODE is zero.
PTDR is cleared by reading F_DATA register when F_MODE > 0.
Default value: 0
0: No new set of data ready
1: A new set of data is ready
Temperature is available. PTDR is cleared anytime OUT_P_MSB or OUT_T_MSB register is read, when F_MODE is zero.
PTDR is cleared by reading F_DATA register when F_MODE > 0.
Default value: 0
0: No new set of data ready
1: A new set of data is ready
PDR
Pressure/Altitude new data available. PDR is set to 1 whenever a new Pressure/Altitude data acquisition is completed. PDR
is cleared anytime OUT_P_MSB register is read, when F_MODE is zero. PDR is cleared by reading F_DATA register when
F_MODE > 0.
0: No new Pressure/Altitude data is available
1: A new set of Pressure/Altitude data is ready
is cleared anytime OUT_P_MSB register is read, when F_MODE is zero. PDR is cleared by reading F_DATA register when
F_MODE > 0.
0: No new Pressure/Altitude data is available
1: A new set of Pressure/Altitude data is ready
TDR
Temperature new Data Available. TDR is set to 1 whenever a Temperature data acquisition is completed. TDR is cleared
anytime OUT_T_MSB register is read, when F_MODE is zero. TDR is cleared by reading F_DATA register when F_MODE
> 0.
0: No new Temperature data ready
1: A new Temperature data is ready
anytime OUT_T_MSB register is read, when F_MODE is zero. TDR is cleared by reading F_DATA register when F_MODE
> 0.
0: No new Temperature data ready
1: A new Temperature data is ready