GS1674 Adaptive Cable Equalizer

Data Sheet

54168 - 2

September 2012

3 of 16

1. Pin Out

1.1 GS1674 Pin Assignment

Figure 1-1: GS1674 Pin Out

1.2 GS1674 Pin Descriptions

56

7

8

16

15

14

13

SDI

1

2

3

4

SDI

SDO

SDO

12

11

10

9

VEE_A

Ground Pad

(bottom of package)

VEE_D

GS1674

16-pin QFN

(top view)

VEE_A

VEE_D

Table 1-1: GS1674 Pin Descriptions

Pin Number

Name

Timing

Type

Description

1, 4

VEE_A

Analog

Power

Most negative power supply for analog circuitry.

Connect to GND.

2, 3

SDI, SDI

Analog

Input

Serial digital differential input.

5, 6

AGC, AGC

Analog

–

External AGC capacitor.

Connect pin 5 and pin 6 together as shown in the GS1674 Typical

Application Circuit on page 11.

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 3.3 and Section 3.4. (Internal pull-down).

9, 12

VEE_D

Analog

Power

Most negative power supply for the digital circuitry and output

buffer.

Connect to GND.

10, 11

SDO, SDO

Analog

Output

Equalized serial digital differential output.