MPL3115A2

Sensors

22

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

765

43210

R

PTOW

POW

TOW

0

PTDR

PDR

TDR

0

W

Reset

000

00000

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

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

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

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

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

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