GS2974B Datasheet, PDF (4/17 Pages) Gennum Corporation – HD-LINX III Adaptive Cable Equalizer

1. Pin Out
1.1 GS2974B Pin Assignment
16
VEE_A 1
15
14
13
12 VEE_D
SDI 2
SDI ³
GS2974B
(top view)
11 _SDO
10 SDO
VEE_A ⁴
5
6
7
9 _{VEE_D}
8
Center Pad
(bottom of package, internally
bonded to VEE_A)
Figure 1-1: 16-Pin QFN
1.2 GS2974B Pin Descriptions
Table 1-1: GS2974B Pin Descriptions
Pin Number
1, 4
Name
VEE_A
Timing
Analog
2, 3
SDI, SDI
Analog
5, 6
AGC, AGC
Analog
7
BYPASS
Not
Synchronous
8
MCLADJ
Analog
9
VEE_D
Analog
Type
Power
Input
–
Input
Input
Power
Description
Most negative power supply for analog circuitry.
Connect to GND.
Serial digital differential input.
External AGC capacitor.
Connect pin 5 and pin 6 together as shown in the Typical
Application Circuit on page 13.
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 Section 4.3. and Section 4.4
Most negative power supply for the digital circuitry and output
buffer.
Connect to GND.
GS2974B GS2974B HD-LINX™ III Adaptive Cable
Equalizer
Data Sheet
45062 - 3
April 2009
4 of 17