GS9074A HD-LINX® II Adaptive Cable Equalizer

Data Sheet

34166 - 4

November 2009

3 of 17

Proprietary & Confidential

1. Pin Out

1.1 GS9074A Pin Assignment

Figure 1-1: 16-Pin QFN

1.2 GS9074A Pin Descriptions

GS9074A

(top view)

1

SDI

SDI

2

3

4

SDO

SDO

12

11

10

9

5

7

68

13

14

15

16

Center Pad

(bottom of package, internally

bonded to VEE_A)

Table 1-1: 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 capacitors.

(See Section 7.1 Typical Application Circuit.)

7BYPASS

Not

Synchronous

Input

Forces the Equalizing and DC RESTORE stages into bypass mode

when HIGH. No equalization occurs in this mode.

8

MCLADJ

Analog

Input

Maximum cable length adjust.

Adjusts the approximate maximum amount of cable to be

equalized (from 0m to the maximum cable length). The output is

muted (latched to the last state) when the maximum cable length is

achieved.

NOTE: MCLADJ is only recommended for data rates up to 270Mb/s.