M66239FP

Rev.1.00 Mar 16, 2005 page 17 of 23

Frequency Modulation Resister Setting (Read Operation)

Read Operation

After write operation completed, it can confirm the resister status using read operation to serial input resister.

When SENABLE is "L" level, SDATAIN is written to serial input resister by SCLK. SDATAIN is composed by 4 bit

address + 3 bit W/R distinction data. After SENABLE change to "H", more than 20 dummy SLCK cycle is needed.

(1)

(2)

(3)

(4)

(5)

(6)

(7)

(8)

SENABLE

SCLK

SDATAIN

A0

A1

A2

A3

L

L

L

SDATAOUT

D0

D1

D2

D13 D14 D15

LSB

MSB

4bit address

20 cycles dummy input

16bit data

For write operation, set to "L" 3 cycles continuously.

Figure 10 Frequency Modulation Resister Setting (Read Operation)