MRF24J40(2008) 데이터 시트보기 (PDF) - Microchip Technology

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MRF24J40
(Rev.:2008)

IEEE 802.15.4™ 2.4 GHz RF Transceiver

Microchip Technology 

MRF24J40

2.14.1 SHORT ADDRESS REGISTER

INTERFACE

The short address memory space contains control

registers with a 6-bit address range of 0x00 to 0x3F.

Figure 2-7 shows a short address read and Figure 2-8

shows a short address write. The 8-bit SPI transfer

FIGURE 2-7:

SHORT ADDRESS READ

begins with a ‘0’ to indicate a short address transaction.

It is followed by the 6-bit register address, Most Signif-

icant bit (MSb) first. The 8th bit indicates if it is a read

(‘0’) or write (‘1’) transaction.

CS

SCK

SDI 0

A5 A4 A3 A2 A1 A0

0

X

SDO

D7 D6 D5 D4 D3 D2 D1 D0

FIGURE 2-8:

SHORT ADDRESS WRITE

CS

SCK

SDI 0

A5 A4 A3 A2 A1 A0

1

D7 D6 D5 D4 D3 D2 D1 D0

SDO

DS39776B-page 12

Preliminary

© 2008 Microchip Technology Inc.

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