GS2964 Adaptive Cable Equalizer

Data Sheet

51913 - 3

March 2010

4 of 17

1. Pin Out

1.1 GS2964 Pin Assignment

Figure 1-1: GS2964 Pin Out

1.2 GS2964 Pin Descriptions

5

6

78

16

15

14

13

SDI

1

2

3

4

SDI

SDO

SDO

12

11

10

9

VEE_A

N/C

Ground Pad

(bottom of package)

VEE_D

GS2964

16-pin QFN

(top view)

N/C

Table 1-1: GS2964 Pin Descriptions

Pin Number

Name

Timing

Type

Description

1

VEE_A

Analog

Power

Most negative power supply for analog circuitry.

Connect to GND.

2, 3

SDI, SDI

Analog

Input

Serial digital differential input.

4, 9

N/C

–

–

No Connect. Not bonded internally.

5, 6

AGC, AGC

Analog

–

External AGC capacitor.

Connect pin 5 and pin 6 together as shown in the Typical

Application Circuit on page 13.

7BYPASS

Not

Synchronous

Input

Forces the Equalizing and DC RESTORE stages into bypass mode

when HIGH. No equalization occurs in this mode. (Internal

pull-down).

8

SQ_ADJ

Analog

Input

Squelch Adjust.

Adjusts the approximate amount of cable equalized before CD goes

low. See Section 4.4 and Section 4.5. (Internal pull-down).

10, 11

SDO, SDO

Analog

Output

Equalized serial digital differential output.