FXAS21002CQR1 Просмотр технического описания (PDF) - NXP Semiconductors.

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Компоненты Описание

производитель

FXAS21002CQR1

3-Axis Digital Angular Rate Gyroscope

NXP Semiconductors. 

Digital Interfaces

3.1.3.3 I²C Data Sequence Diagrams

<Single Byte Read>

Master

ST Device Address[6:0] W

Register Address[7:0]

SR Device Address[6:0] R

NACK SP

Slave

ACK

ACK

ACK Data[7:0]

<Multiple Byte Read>

Master

Slave

ST Device Address[6:0] W

Register Address[7:0]

SR Device Address[6:0] R

ACK

ACK

ACK

ACK

continued

Data[7:0]

Master

ACK

ACK

NACK SP

Slave Data[7:0]

Data[7:0]

Data[7:0]

<Single Byte Write>

Master

ST Device Address[6:0] W

Register Address[7:0]

Data[7:0]

SP

Slave

ACK

ACK

ACK

<Multiple Byte Write>

Master

ST Device Address[6:0] W

Register Address[7:0]

Data[7:0]

Data[7:0]

SP

Slave

Legend

ST: Start Condition

ACK

ACK

ACK

SP: Stop Condition ACK: Acknowledge NACK: No Acknowledge

W: Write = 0

Figure 7. I²C data sequence diagram

ACK

SR: Repeated Start Condition

3.2 SPI Interface

The SPI interface is a classical Master/Slave serial port. FXAS21002C is always

considered to be the slave device and thus never initiates a communication with the

host processor.

The SPI interface of FXAS21002C is compatible with SPI interface mode 00,

corresponding to CPOL = 0 and CPHA = 0.

For CPOL = 0, the idle value of the clock is zero, and the active value of the clock is

1. For CPHA = 0, data is captured on the clock's rising edge (low to high transition)

and data is propagated on the clock’s falling edge (high to low transition).

3-Axis Digital Angular Rate Gyroscope, Rev. 2.1, 5/2015

17

Freescale Semiconductor, Inc.

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