Freescale Semiconductor FRDM-FXS-MULTI 데이터 시트

Sensors
Freescale Semiconductor, Inc.

19

The aliases allow the STATUS register to be read easily before reading the current Pressure/Altitude or Temperature data, 

delta Pressure/Altitude or Temperature data or FIFO data using register address auto-incrementing mechanism.

The STATUS register provides the acquisition status information on a per sample basis, and reflects real-time updates to the 

OUT_P and OUT_T registers. The same STATUS register can be read through an alternate address.

1. The Registers in Area A from 0x00 to 0x05 depend on the F_MODE bit setting in FIFO Setup Register (F_SETUP). 

• F_MODE = 00, FIFO is disabled. 
• F_MODE = 01 is circular buffer.
• F_MODE = 10 is full stop mode.

Sensor Status Register (DR_STATUS)

0x00

Yes

R

0x01

DR_STATUS

Pressure Data Out MSB (OUT P_MSB)

0x00

Yes

R 0x02

0x01

Bits 12-19 of 20-bit 

real-time Pressure 

sample.

Root pointer to 

Pressure and 

Temperature 

FIFO data.

Pressure Data Out CSB (OUT_P_CSB)

0x00

Yes

R

0x03

Bits 4-11 of 20-bit real-time Pressure 

sample

Pressure Data Out LSB (OUT_P _LSB)

0x00

Yes

R

0x04

Bits 0-3 of 20-bit real-time Pressure 

sample

Temperature Data Out MSB 

(OUT_T_MSB)

0x00

Yes

R

0x05

Bits 4-11 of 12-bit real-time Temperature 

sample

Temperature Data Out LSB

(OUT_T _LSB)

0x00

Yes

R

0x00

Bits 0-3 of 12-bit real-time Temperature 

sample

Sensor Status Register (F_STATUS)

0x00

Yes

R

0x01

F_STATUS

FIFO 8-bit Data Access (F_DATA)

0x00

Yes

R 0x01

0x01

Read to Reserved Area returns 00

0x00

N/A

—

0x03

—

Read to Reserved Area returns 00

0x00

N/A

—

0x04

—

Read to Reserved Area returns 00

0x00

N/A

—

0x05

—

Read to Reserved Area returns 00

0x00

N/A

—

0x00

—

F_MODE = 00

(1)

1. The F_MODE is defined in 

0x00 = DR_STATUS (0x06)

F_MODE > 00

0x00 = F_STATUS (0x0D)