GS1524ACKDE3 查看數據表（PDF） - Gennum -> Semtech

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GS1524ACKDE3

Adaptive Cable Equalizer

Gennum -> Semtech 

1.2 GS1524A Pin Descriptions

Table 1-1: GS1524A Pin Descriptions

Pin Number

1

2, 15

3, 6, 11, 14

4, 5

7, 8

9

10

12, 13

16

Name

CLI

VCC

VEE

SDI, SDI

AGC+,

AGC-

BYPASS

MCLADJ

SDO, SDO

CD/MUTE

Timing

Type

Description

Analog

Analog

Analog

Analog

Analog

Not

Synchronous

Analog

Analog

Not

Synchronous

Output

Cable Length Indicator.

An analog voltage will be output proportional to the cable length

connected to the serial digital input.

NOTE: CLI is recommended for data rates up the 360Mb/s only.

Power

Most positive power supply connection.

Connect to +3.3V DC.

Power

Most negative power supply connection.

Connect to GND.

Input

Serial digital differential input.

–

External AGC capacitor.

Connect pin 7 and pin 8 together through a 1uF capacitor.

Input

Forces the Equalizing and DC RESTORE stages into bypass mode

when HIGH. No equalization occurs in this mode.

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 360Mb/s.

Output

Equalized serial digital differential output.

Bidirectiona

l

STATUS SIGNAL OUTPUT / CONTROL SIGNAL INPUT

levels are LVCMOS/LVTTL compatible.

OUTPUT (CD):

Indicates the presence of a valid input signal. When the CD pin is

LOW, a valid input signal has been detected. When this pin is HIGH,

the input signal is invalid. If CD is set HIGH, the serial digital output

of the device will be forced to a steady state (latched to the last

state).

NOTE: This pin will indicate loss of carrier for data rates > 19Mb/s.

INPUT (MUTE):

When the MUTE pin is set HIGH by the application interface, the

serial digital output of the device will be forced to a steady state

(latched to the last state). When the MUTE pin is set LOW, the serial

digital output of the device will be active.

NOTE: The CD/MUTE pin is not functional when BYPASS is set HIGH.

GS1524A Adaptive Cable Equalizer

Data Sheet

28852 - 5

June 2009

5 of 16

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