ICS1531 datasheet(44/76 Pages) ICST

44 / 76 page

ICS1531 Rev N 12/1/99

December, 1999

Chapter 6

ICS1531 Data Sheet - Preliminary

6.5.27

The MCLK-SSOE (MCLK Spread Spectrum Output Enable) Register is used to control the gain of the

MCLK PFD and spread spectrum. (To select values, see Section 7.3, “Programming Spread Spectrum”.)

6.5.28

The MCLK-OE (MCLK Output Enable) Register is used to enable the MCLK output and spread-spectrum

functionality. (To select values, see Section 7.3, “Programming Spread Spectrum”.)

Table 6-27.

MCLK-SSOE Register

Bit

Bit Name

Bit Definition

Ac-

cess

Spec.

Func.

Re-

set

2A:7-

2A:6

MCLK_SS [1-0]

MCLK Spread-Spectrum (Gain Select) [1-0].

• 0 = The gain is 1.

• 1 = The gain is 2.

• 2 = The gain is 4.

• 3 = The gain is 8.

R/W

D-MK

2A:5

Reserved

Reserved.

• See Section 6.1, “Reserved Bits”.

• This bit can be programmed to ‘0’.

––

2A:4-

2A:2

MCLK_PFD [2-0] MCLK Phase/Frequency Detector (Gain Select) [2-0].

These bits determine the gain for the MCLK

Phase/Frequency Detector.

• 0 = The gain is 1.

• 1 = The gain is 2.

• 2 = The gain is 4.

• 3 = The gain is 8.

• 4 = The gain is 16, and so forth.

R/W

D-MK

2A:1-

2A:0

MCLK_OSD

[1-0]

MCLK Output Scaler Divider [1-0].

These bits determine the value for dividing the MCLK output

scaler.

• 0 = Division is by 1.

• 1 = Division is by 2.

• 2 = Division is by 4.

• 3 = Division is by 8.

R/W

D-MK

Table 6-28.

MCLK-OE Register

Bit

Bit Name

Bit Definition

Ac-

cess

Spec.

Func.

Re-

set

2B:7-

2B:2

Reserved

Reserved.

• See Section 6.1, “Reserved Bits”.

• These bits can be programmed to ‘0’.

––

2B:1

MCLK_SSENB

MCLK Spread-Spectrum Enable.

• 0 = Disable MCLK spread-spectrum functionality.

• 1 = Enable MCLK spread-spectrum functionality.

R/W

–

2B:0

MCLK_OE

MCLK Output Enable.

• 0 = Disable MCLK output.

• 1 = Enable MCLK output.

R/W

–

ICS1531 Datenblatt(PDF) 44 Page - Integrated Circuit Systems

ICS1531 Datenblatt(HTML) 44 Page - Integrated Circuit Systems

Html Pages

1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 32 33 34 35 36 37 38 39 40 41 42 43 44 45 46 47 48 49 50 51 52 53 54 55 56 57 58 59 60 61 62 63 64 65 66 67 68 69 70 71 72 73 74 75 76

Datenblatt Download

Link URL