BIT(S)

BIT REF.

DESCRIPTION

33-38

M[0]..M[5]

M counter control bits

Modulus = value +1

39

RESERVED

Set to zero.

40

DBLFREQ

Doubles modulus of dual-modulus prescaler (from 6/7 to 12/14).

41-44

A[0]..A[3]

Controls A counter. When set to zero, modulus=7. Otherwise,

modulus=7 for “value” underflows of the prescaler, and modulus=6

thereafter until M counter underflows.

45-48

RESERVED

Set to zero.

49-55

R[0]..R[6]

Reference divider modulus control bits

Modulus = value + 1

56

RESERVED

Set to zero.

ICS1572

11