1. Pin Out
1.1 Pin Assignment
15
14
16
13
SDO
SDO
1
12
11
DDI
DDI
2
3
GS2978
(top view)
10 SD/HD
VEE
4
9
VCC
RSET
7
5
6
8
Center Pad
(bottom of package)
Figure 1-1: 16-Pin QFN
1.2 Pin Descriptions
Table 1-1: Pin Descriptions
Pin Number
Name
Timing
Type
Description
1,2
3
DDI, DDI
VEE
Analog
–
Input
Serial digital differential input.
Power
Most negative power supply connection. Connect to GND.
4
RSET
Analog
–
Input
–
External output amplitude control resistor.
5,8,13,14,
15,16
NC
No Connect. Not bonded internally.
7
6
RSVD
–
Reserved
Input
Do not connect.
DISABLE
Non
Synchronous
Serial output disable. When asserted LOW, the SDO/SDO output
driver is powered off. SDO/SDO will float to VCC through the pull-up
resistor.
9
VCC
–
Power
Input
Most positive power supply connection. Connect to +3.3V.
10
SD/HD
Non
Synchronous
Output slew rate control. When set HIGH, the output will meet
SMPTE 259M rise/fall time specifications. When set LOW, the serial
outputs will meet SMPTE424M and SMPTE 292M rise/fall time
specifications.
GS2978
4 of 15
HD-LINX® III Multi-Rate Dual Slew-Rate Cable Driver
Data Sheet
37186 - 7
March 2009
GENNUM [ GENNUM CORPORATION ]
