RF Monolithics, Inc.

Phone: (972) 233-2903

Fax: (972) 387-8148

E-mail: info@rfm.com

Page 11 of 15

RFM Europe

Phone: 44 1963 251383

Fax: 44 1963 251510

http://www.rfm.com

©1999 by RF Monolithics, Inc. The stylized RFM logo are registered trademarks of RF Monolithics, Inc.

TR7003-11062007

Pin 19

Pin 18

Pin 17

Pin 19

Pin 18

Pin 17

Pin 19

Pin 18

Pin 17

Pin 19

Pin 18

Pin 17

next to last byte

next to last byte

last data byte

last data byte

Single Byte Write Sequence

The write, address and data bits are clocked into the radio (left to right) on the rising edge of the clock input to Pin 18.

Single Byte Read Sequence

The read and address bits and are clocked into the radio on the rising edge of the clock input to Pin 18;

data is output on the rising edge of the clock and should be read into the host on the falling edge of the clock.

Multi-byte Write Sequence

Address increments automatically and rolls over from address 2 to address 0.

Multi-byte Read Sequence

Address increments automatically and rolls over from address 2 to address 0.

W

A1

A0

D7D6D5D4

D3D2D1D0

R

A1

A0

D7D6D5D4D3D2D1

D0

Control Register Read/Write Detail

D3

D2

D1

D0

D7

D6

D5

D4

D3

D2

D1

D0

D3

D2

D1

D0

D7

D6

D5

D4

D3

D2

D1

D0

Figure 4