GS12070 Datasheet, PDF (1/3 Pages) Semtech Corporation – UHD-SDI Gearbox

GS12070
UHD-SDI Gearbox
Gennum Products
Key Features
• Converts between 1.5G, 3G, 6G and 12G SDI
Š Quad Link 3G-SDI ↔ 12Gb/s
Š Dual Link 6Gb/s ↔ 12Gb/s
Š Dual Link (2 x 3Gb/s) ST 425-3 ↔ 6Gb/s
Š Quad Link (4 x 3Gb/s) ST 425-5/-6 ↔ Dual Link
6Gb/s
Š Quad Link HD-SDI (4 x 1.5Gb/s) ↔ 6Gb/s
• Serial Bypass modes for all support rates
• 4 Serial Differential Inputs
Š 100Ω differential inputs support DC-coupling to
1.2V CML Logic
Š Input trace equalization for up to 6" FR4 at 12Gb/s
• 4 Serial Differential Outputs
Š 100Ω differential outputs support DC-coupling to
1.2V CML Logic
Š Output de-emphasis to compensate for up to 6"
FR4 at 12Gb/s
• Reference Clock/Crystal Input —148.5MHz/27MHz
• GSPI serial control and monitoring interface
• Selectable 1.8V and 2.5V digital control I/O
• Automatic SMPTE ST 352 packet creation
• 14mm x 14mm 256-Ball BGA (0.8mm pitch)
• Pb-free and RoHS-compliant package
Applications
• UHDTV1 and 4K D-Cinema end-equipment: Cameras,
Monitors, Switchers
Description
The GS12070 is an UHD-SDI Gearbox which performs the
multiplexing and de-multiplexing necessary to facilitate
conversions between the ST 425-3 and ST 425-5 multi-link
3Gb/s UHD-SDI Interface and the SMPTE ST 2081 (6Gb/s)
and ST 2082 (12Gb/s) Interfaces. A conversion between
4 x 1.5Gb/s and 6Gb/s is also supported.
ST 425-5
Quad-link 3G
3840 x 2160
p60
4:2:2 10-bit
ST 2081-11
Dual-link 6G
ST 2082-10
Single-link 12G
4x3G ↔ 2x6G
2x6G ↔ 12G
4x3G ↔ 12G
GS12070 Supported Conversions of SMPTE Standard
Interfaces
The GS12070 features four high-speed differential signal
inputs and four high-speed differential serial outputs
which can be interfaced to 1.2V CML I/O. The high-speed
inputs and outputs include programmable trace
equalization and de-emphasis drivers to compensate for
high-frequency losses associated with board-level
interconnect.
The high-speed serial inputs and outputs support 270Mb/s,
1.5G, 3G, 6G and 12G nominal data rates. The supported
conversions are performed by manually selecting the input
and output rates. Unused output ports at 6G and 12G may
be configured to output a copy of the primary converted
output. A serial bypass mode is also available as a manually
selectable option.
GS12070
Product Brief
PDS-060480
Rev.0
June 2014
www.semtech.com
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