GS2984 Datasheet, PDF (5/20 Pages) Gennum Corporation – GS2984 Adaptive Cable Equalizer

Table 1-1: GS2984 Pin Descriptions (Continued)
Pin Number
8
Name
SQ_ADJ
Timing
Analog
Type
Input
9
CMSET
Not
Input
Synchronous
10, 11
12
SDO, SDO
VEE_D
Analog
Analog
Output
Power
13
VCC_D
Analog
Power
14
MUTE
Not
Input
Synchronous
15
CD
Not
Output
Synchronous
16
VCC_A
Analog
Power
–
Center Pad
–
Power
Description
Squelch Adjust.
Adjusts the approximate amount of cable equalized before CD goes
low. See Section 4.4 and Section 4.5. (Internal pull-down).
CONTROL SIGNAL INPUT
levels are LVCMOS/LVTTL compatible. (3.3V Tolerant)
Controls output common mode level. (Internal pull-down).
See Section 4.7.
Equalized serial digital differential output.
Most negative power supply for the digital circuitry and output
buffer.
Connect to GND.
Most positive power supply for the digital I/O pins of the device.
Connect to +3.3V DC.
CONTROL SIGNAL INPUT
levels are LVCMOS/LVTTL compatible. (3.3V Tolerant)
Controls output behaviour on SDO and SDO. (Internal pull-down).
See Section 4.5.
STATUS SIGNAL OUTPUT
Signal levels are LVCMOS/LVTTL compatible.
Indicates the presence of an input signal.
See Section 4.5.
Most positive power supply for the analog circuitry of the device.
Connect to +3.3V DC.
Internally bonded to VEE_A.
GS2984 Adaptive Cable Equalizer
Data Sheet
50985 - 3
March 2010
5 of 20