CDC2586

3.3-V PHASE-LOCK LOOP CLOCK DRIVER

WITH 3-STATE OUTPUTS

SCAS337C – FEBRUARY 1993 – REVISED OCTOBER 1998

3

POST OFFICE BOX 655303

output configuration A

Output configuration A is valid when any output configured as a 1

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 1/2

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

outputs

operate at the same frequency as CLKIN.

Table 1. Output Configuration A

INPUTS

OUTPUTS

SEL1

SEL0

1/2

FREQUENCY

1

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 1

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 1

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

outputs operate at

double the frequency of CLKIN.

Table 2. Output Configuration B

INPUTS

OUTPUTS

SEL1

SEL0

1

FREQUENCY

2

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