Freescale Semiconductor FRDM-FXS-MULTI 데이터 시트

Sensors
Freescale Semiconductor, Inc.

35

The system’s interrupt controller uses the corresponding bit field in the CTRL_REG5 register to determine the routing table for 

the INT1 and INT2 interrupt pins. If the bit value is logic ‘0’ the functional block’s interrupt is routed to INT2, and if the bit value is 
logic ‘1’ then the interrupt is routed to INT1. All interrupts routed to INT1 or INT2 are logically OR’d as illustrated in 

Figure 9

, thus 

one or more functional blocks can assert an interrupt pin simultaneously; therefore a host application responding to an interrupt 
should read the INT_SOURCE register to determine the appropriate sources of the interrupt.

The 2’s complement offset correction registers values are used to trim the temperature, altitude and pressure offsets that might 

occur over the life of the product. 

The resolution of the pressure offset register is 4 Pa per bit. 

Pressure user accessible offset trim value expressed as an 8-bit 2's complement number. The user offset registers may be 

adjusted to enhance accuracy and optimize the system performance. Range is from -512 to +508 Pa, 4 Pa per LSB.

Temperature user accessible offset trim value expressed as an 8-bit 2's complement number. The user offset registers may 

be adjusted to enhance accuracy and optimize the system performance. Range is from -8 to +7.9375

°C, 0.0625°C per LSB.

7 

6

5

4

3

2

1

0

R

OFF_P7

OFF_P6

OFF_P5

OFF_P4

OFF_P3

OFF_P2

OFF_P1

OFF_P0

W

Reset

0

0

0

0

0

0

0

0

OFF_P7-OFF_P0

Pressure offset trim value. 
Default value: 0000_0000.

7 

6

5

4

3

2

1

0

R

OFF_T7

OFF_T6

OFF_T5

OFF_T4

OFF_T3

OFF_T2

OFF_T1

OFF_T0

W

Reset

0

0

0

0

0

0

0

0

OR

SRC DR

SRC Pressure Change

SRC Temp Change

INT