ADF7021 datasheet(14/64 Pages) AD

Part #	ADF7021

Description	High Performance Narrow-Band Transceiver IC

PDF	64 Pages

Scroll/Zoom	100%

Manufacturer	AD [Analog Devices]

Direct Link	http://www.analog.com

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14 / 64 page

ADF7021

Data Sheet

Rev. B | Page 14 of 64

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.

Tx BIT

TxRxCLK

(TRANSMIT DATA INPUT

IN UART/SPI MODE.)

CLKOUT

(TRANSMIT/RECEIVE DATA

CLOCK IN SPI MODE.

NOT USED IN UART MODE.)

Tx MODE

Tx/Rx MODE

TxRxDATA

(RECEIVE DATA OUTPUT

IN UART/SPI MODE.)

HIGH-Z

Tx BIT

tBIT

FETCH

SAMPLE

Figure 8. Transmit Timing Diagram in UART/SPI Mode

Rx BIT

TxRxCLK

(TRANSMIT DATA INPUT

IN UART/SPI MODE.)

CLKOUT

(TRANSMIT/RECEIVE DATA

CLOCK IN SPI MODE.

NOT USED IN UART MODE.)

Rx MODE

Tx/Rx MODE

TxRxDATA

(RECEIVE DATA OUTPUT

IN UART/SPI MODE.)

HIGH-Z

Rx BIT

tBIT

FETCH SAMPLE

Figure 9. Receive Timing Diagram in UART/SPI Mode

ADF7021 Datasheet(PDF) 14 Page - Analog Devices

ADF7021 Datasheet(HTML) 14 Page - Analog Devices

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