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Rainbow Electronics W90P710CDG User Manual

Page 321

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W90P710CD/W90P710CDG

Publication Release Date: September 19, 2006

- 321 -

Revision B2

The ACTL_IISCON is the IIS basic operation control register.

BITS

DESCRIPTIONS

[31:20] Reserved

-

[19:16] PRS[3:0]

IIS frequency pre-scaler selection bits. (FPLL is the input PLL
frequency, MCLK is the output main clock)
PSR[3:0]=0000, MCLK=FPLL/1
PSR[3:0]=0001, MCLK=FPLL/2
PSR[3:0]=0010, MCLK=FPLL/3
PSR[3:0]=0011, MCLK=FPLL/4
PSR[3:0]=0100, MCLK=FPLL/5
PSR[3:0]=0101, MCLK=FPLL/6
PSR[3:0]=0110, MCLK=FPLL/7
PSR[3:0]=0111, MCLK=FPLL/8
PSR[3:0]=1000, reserved
PSR[3:0]=1001, MCLK=FPLL/10
PSR[3:0]=1010, reserved
PSR[3:0]=1011, MCLK=FPLL/12
PSR[3:0]=1100, reserved
PSR[3:0]=1101, MCLK=FPLL/14
PSR[3:0]=1110, reserved
PSR[3:0]=1111, MCLK=FPLL/16

(when the division factor is 3/5/7, the duty cycle of MCLK is not
50%, the high duration is 0.5*FPLL)

The PSR[3:0] bits are read/write

31

30

29

28

27

26

25

24

Reserved

23

22

21

20

19

18

17

16

Reserved PRS[3:0]

15

14

13

12

11

10

9

8

Reserved

7

6

5

4

3

2

1

0

BCLK_SEL[1:0] FS_SEL

MCLK_SEL

FORMAT

Reserved