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Chapter 6

ICS1531 Rev N 12/1/99

December, 1999

ICS1531 Data Sheet - Preliminary

6.5.19

The PNLCLK-SS0 (PNLCLK Spread-Spectrum Counter 0) Register is used in combination with the

PNLCLK-SS1 Register to specify the amount of clock spread. (To select values, see Section 7.3,

“Programming Spread Spectrum”.)

6.5.20

The PNLCLK-SS1 (PNLCLK Spread-Spectrum Counter 1) Register is used in combination with the

PNLCLK-SS0 Register. (To select values, see Section 7.3, “Programming Spread Spectrum”.)

Table 6-19.

PNLCLK-SS0 Register

Bit

Bit Name

Bit Definition

Ac-

cess

Spec.

Func.

Re-

set

22:7-

22:0

PNLCLK_SS0

[7-0]

PNLCLK Spread-Spectrum (Counter) 0 [7-0].

These bits are the least-significant bits [7-0] for the PNLCLK

spread-spectrum counter.

R/W

D-PK

Table 6-20.

PNLCLK-SS1 Register

Bit

Bit Name

Bit Definition

Ac-

cess

Spec.

Func.

Re-

set

23:7-

23:4

Reserved

Reserved.

• See Section 6.1, “Reserved Bits”.

• These bits can be programmed to ‘0’.

––

23:3-

23:0

PNLCLK_SS1

[3-0]

PNLCLK Spread-Spectrum (Counter) 1 [3-0].

These bits are the most-significant bits [11-8] for the PNLCLK

spread-spectrum counter.

R/W

D-PK

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