1. Pin Out
1.1 GS2974A Pin Assignment
V
CC
_A
MUTE
V
CC
_D
13
12
V
EE
_D
11
GS2974A
(top view)
SDI
3
10
SDO
CD
15
16
V
EE
_A
1
14
SDI
2
SDO
V
EE
_A
4
5
AGC
6
AGC
7
BYPASS
8
MCLADJ
9
V
EE
_D
Center Pad
(bottom of package, internally
bonded
to VEE_A)
Figure 1-1: 16-Pin QFN
1.2 GS2974A Pin Descriptions
Table 1-1: GS2974A Pin Descriptions
Pin Number
1, 4
Name
VEE_A
Timing
Analog
Type
Power
Description
Most negative power supply for analog circuitry.
Connect
to
GND.
2, 3
5, 6
SDI, SDI
AGC, AGC
Analog
Analog
Input
–
Serial
digital differential input.
External AGC capacitor.
Connect
pin 5 and pin 6 together as shown in the
7
BYPASS
Not
Synchronous
Analog
Input
Forces the Equalizing and DC RESTORE stages into bypass mode
when HIGH. No equalization occurs in this mode.
Maximum cable length adjust.
Adjusts the approximate maximum amount of cable to be
equalized.
See
and
8
MCLADJ
Input
9
VEE_D
Analog
Power
Most negative power supply for the digital circuitry and output
buffer.
Connect
to
GND.
GS2974A HD-LINX™ III Adaptive Cable Equalizer
Data Sheet
42216 - 3
January 2009
4 of 16
GENNUM [ GENNUM CORPORATION ]
