CSP1027 datasheet(28/64 Pages) AGERE

28 / 64 page

CSP1027 Voice Band Codec for

Data Sheet

Cellular Handset and Modem Applications

December 1999

Lucent Technologies Inc.

5 Register Information (continued)

5.3 Codec I/O Control 2 (cioc2) Register

Table 9. Codec I/O Control 2 (cioc2) Register

Bit

15—14

11—6

5—0

Field

Reg

Reserved

CDIFS

CDIF0

CDIV3

Field

Value

Description

Reg

Indicates control register 0.

Reserved

* Value upon reset.

Reserved, always write 0.

CDIFS

Sampling rate, CKS = ICLK0 ÷ (CDIV3 x 125).

Sampling rate, CKS = ICLK0 ÷ 256. (Note: CDIV3 must be set to 2.)

Sampling rate, CKS = ICLK0 ÷ 1458. (Note: CDIV3 must be set to 12.)

Sampling rate, CKS = ICLK0 ÷ (125 x M + S x N). See Section 4.5 on page 16.

CDIF0

00 0000*

Sampling rate, CKS = ICLK0 ÷ (CDIV3 x 125).

01 0101

Sampling rate, CKS = ICLK0 ÷ 256. (Note: CDIV3 must be set to 2.)

00 0011

Sampling rate, CKS = ICLK0 ÷ 1458. (Note: CDIV3 must be set to 12.)

WW WWWW

Sampling rate, CKS = ICLK0 ÷ (125 x M + S x N). See Section 4.5 on page 16.

CDIV3

00 0001

Oversampling clock, CKOS = ICLK0 ÷ 1.

00 0010

Oversampling clock, CKOS = ICLK0 ÷ 2.

11 1111

Oversampling clock, CKOS = ICLK0 ÷ 63.

00 0000*

Oversampling clock, CKOS = ICLK0 ÷ 64.

WW WWWW

Sampling rate, CKS = ICLK0 ÷ (125 x M + S x N). See Section 4.5 on page 16.

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