CDC586

3.3-V PHASE-LOCK-LOOP CLOCK DRIVER

WITH 3-STATE OUTPUTS

SCAS336D – FEBRUARY 1993 – REVISED OCTOBER 1998

3

POST OFFICE BOX 655303

output configuration A

Output configuration A is valid when any output configured as a 1x frequency output in Table 1 is fed back to

FBIN. The input frequency range for CLKIN is 50 MHz to 100 MHz when using output configuration A. Outputs

configured as 1/2x outputs operate at half the CLKIN frequency, while outputs configured as 1x outputs operate

at the same frequency as CLKIN.

Table 1. Output Configuration A

INPUTS

OUTPUTS

SEL1

SEL0

1/2x

FREQUENCY

1x

FREQUENCY

L

L

None

All

L

H

1Yn

2Yn, 3Yn, 4Yn

H

L

1Yn, 2Yn

3Yn, 4Yn

H

H

1Yn, 2Yn, 3Yn

4Yn

NOTE: n = 1, 2, 3

output configuration B

Output configuration B is valid when any output configured as a 1x frequency output in Table 2 is fed back to

FBIN. The input frequency range for CLKIN is 25 MHz to 50 MHz when using output configuration B. Outputs

configured as 1x outputs operate at the CLKIN frequency, while outputs configured as 2x outputs operate at

double the frequency of CLKIN.

Table 2. Output Configuration B

INPUTS

OUTPUTS

SEL1

SEL0

1x

FREQUENCY

2x

FREQUENCY

L

L

All

None

L

H

1Yn

2Yn, 3Yn, 4Yn

H

L

1Yn, 2Yn

3Yn, 4Yn

H

H

1Yn, 2Yn, 3Yn

4Yn

NOTE: n = 1, 2, 3