CDCU877ZQL datasheet(3/17 Pages) TI

Part #	CDCU877ZQL

Description	1.8V PHASE LOCK LOOP CLOCK DRIVER

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Manufacturer	TI [Texas Instruments]

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CDCU877/CDCU877A

1.8V PHASE LOCK LOOP CLOCK DRIVER

SCAS688A − JUNE 2003 − REVISED JANUARY 2004

3

POST OFFICE BOX 655303

• DALLAS, TEXAS 75265

Table 1. Terminal Functions

NAME

BGA

MLF

I/O

DESCRIPTION

AGND

G1

7

Analog ground

AVDD

H1

8

Analog power

CK

E1

4

I

Clock input with a (10 k

Ω to 100 kΩ) pulldown resistor

CK

F1

5

I

Complementary clock input with a (10 k

Ω to 100 kΩ) pulldown resistor

FBIN

E6

27

I

Feedback clock input

FBIN

F6

26

I

Complementary feedback clock input

FBOUT

H6

24

O

Feedback clock output

FBOUT

G6

25

O

Complementary feedback clock output

OE

F5

22

I

Output enable (asynchronous)

OS

D5

21

I

Output select (tied to GND or VDD)

GND

B2, B3, B4, B5,

C2, C5, H2, H5,

J2, J3, J4, J5

10

Ground

VDDQ

D2, D3, D4, E2,

E5, F2, G2, G3,

G4, G5

1, 6, 9, 15, 20,

23, 28, 31, 36

Logic and output power

Y[0:9]

A2, A1, D1, J1,

K3, A5, A6, D6,

J6, K4

38, 39, 3, 11, 14,

34, 33, 29, 19, 16

O

Clock outputs

Y[0:9]

A3, B1, C1, K1,

K2, A4, B6, C6,

K6, K5

37, 40, 2, 12, 13,

35, 32, 30, 18, 17

O

Complementary clock outputs

Table 2. Function Table

INPUTS

OUTPUTS

PLL

AVDD

OE

OS

CK

Y

FBOUT

PLL

GND

H

X

L

H

L

H

L

H

Bypassed/

Off

GND

H

X

H

L

H

L

H

L

Bypassed/

Off

GND

L

H

L

H

LZ

L

H

Bypassed/

Off

GND

L

H

L

LZ

Y7 Active

LZ

Y7 Active

H

L

Bypassed/

Off

1.8 V Nominal

L

H

L

H

LZ

L

H

On

1.8 V Nominal

L

H

L

LZ

Y7 Active

LZ

Y7 Active

H

L

On

1.8 V Nominal

H

X

L

H

L

H

L

H

On

1.8 V Nominal

H

X

H

L

H

L

H

L

On

1.8 V Nominal

X

L

LZ

Off

X

H

Reserved

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