ADF7021-NDF View Datasheet(PDF) - Analog Devices

Part Name

Description

Manufacturer

ADF7021-NDF

High Performance Narrow-Band Transceiver IC

Analog Devices 

ADF7021-N

UART/SPI Mode

UART mode is enabled by setting R0_DB28 to 1. SPI mode is enabled by setting R0_DB28 to 1 and setting R15_DB[17:19] to 0x7.

The transmit/receive data clock is available on the CLKOUT pin.

tBIT

CLKOUT

(TRANSMIT/RECEIVE DATA

CLOCK IN SPI MODE.

NOT USED IN UART MODE.)

TxRxCLK

(TRANSMIT DATA INPUT

IN UART/SPI MODE.)

FETCH SAMPLE

Tx BIT

Tx BIT

Tx BIT

Tx BIT

Tx BIT

TxRxDATA

(RECEIVE DATA OUTPUT

IN UART/SPI MODE.)

HIGH-Z

Tx/Rx MODE

CLKOUT

(TRANSMIT/RECEIVE DATA

CLOCK IN SPI MODE.

NOT USED IN UART MODE.)

TxRxCLK

(TRANSMIT DATA INPUT

IN UART/SPI MODE.)

TxRxDATA

(RECEIVE DATA OUTPUT

IN UART/SPI MODE.)

Tx/Rx MODE

Tx MODE

Figure 8. Transmit Timing Diagram in UART/SPI Mode

tBIT

FETCH SAMPLE

HIGH-Z

Rx BIT

Rx BIT

Rx BIT

Rx BIT

Rx MODE

Figure 9. Receive Timing Diagram in UART/SPI Mode

Rx BIT

Rev. 0 | Page 14 of 64

Share Link: