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NSE-5310

Data Sheet - A p p l i c a t i o n I n f o r m a t i o n

Figure 10. I²C Additional Information – Magnitude and Temperature Sensor

The information is sequenced by the order of priority during operation. Hence temperature readout is not needed for every access and

magnitude information is only important if the AGC is out of range. The I²C readout can be stopped after every byte with the stop condition P.

Timing constraints are according to I2C-Bus Specification V2.1 / 2000.

8.4.1 Sync Mode

This mode is used to synchronize the external electronics with the NSE-5310. In this mode two signals are provided at the pins DTEST_A and

DTEST_B.

Figure 11. Sync Mode

Every rising edge at DTEST1_A indicates that new data in the device is available. With this signal it is possible to trigger a µC (interrupt) and

start the serial interface readout.

AGC7

Data Byte 5

ACK

Master

TD9

9

Mag

Incr

Decr

SCL

SDA

AGC6AGC5AGC4AGC3AGC2AGC1AGC0

Mag7 Mag6Mag5Mag4Mag3Mag2Mag1Mag0

TD8 TD7 TD6 TD5 TD4 TD3 TD2

1

91

91

9

P

ACK

Master

ACK

Master

ACK

Master

Data Byte 4

Data Byte 3

Data Byte 2

AGC7- AGC0: Automatic Gain Control data

Mag7- Mag0: MSB magnitude value

TD9 - TD2: MSB temperature data

DTEST 1 _ A

DTEST 2 _ B

Data _PhaseA

Data_PhaseB

Data_PhaseA

96 µs