GS6080 Datasheet, PDF (11/19 Pages) Semtech Corporation – Input signal trace equalization

4.3.1 Slew Rate Selection (Rise/Fall Time Requirement)
The GS6080 supports two user-selectable output slew rates.
Control of the slew rate is determined by the setting of the SD_EN input pin.
Table 4-2: Slew Rate Selection
SD_EN
0
1
Floating
Rise/Fall Time
UHD-SDI(5.94Gb/s), SMPTE ST 424 and SMPTE ST 292
compliant
SMPTE ST 259 compliant
SMPTE ST 259 compliant
4.4 Output Disable
The GS6080 supports an output disable function for the serial data differential output.
Control of this function is determined by the setting of the serial output disable
(DISABLE) control pin.
Setting this pin LOW, disables power to the entire device.
Table 4-3: Output Disable
DISABLE
0
1
Floating
SDO/SDO
All Chip Power Down
Operational
Operational
4.5 Signal Presence Indicator (SP)
The GS6080 supports a signal presence indicator function.
The signal presence pin (SP) is an active-low output that indicates a signal has been
detected at the pre-driver output.
The signal presence function measures signal-edge energy to indicate that the
pre-driver to the serial data outputs is toggling.
Table 4-4: Signal Presence Indicator
Pre-Driver Output
Signal present
No Signal present
SP Pin
0
1
GS6080
Final Data Sheet
PDS-060045
Rev.6
September 2014
www.semtech.com
11 of 19
Proprietary & Confidential