M21350-15 Datasheet, PDF (1/62 Pages) M/A-COM Technology Solutions, Inc. – 3G/HD/SD-SDI Multi-rate Video Quad Reclocker

M21350-15/M21355-15
3G/HD/SD-SDI Multi-rate Video Quad Reclocker
Rev V6
Applications
• 3G/HD/SD-SDI Video Switchers
• 3G/HD/SD-SDI Video Routers
• 3G/HD/SD-SDI Video Distribution Amplifiers
• DVB-ASI Equipment
Features
• Independent, quad channel, multi-rate reclocker
• SMPTE 259M-C, 292, 424M, and DVB ASI Compliant
• Greater than 0.6 UI Input Jitter Tolerance
• Integrated 50  input termination
• 16x4 Input Crosspoint (M21355)
• Quad 4:1 Mux (M21350)
• Common reference clock for all channels
• Input equalization and output de-emphasis for 40" of FR4 trace
• 135 mW power consumption per channel (1.2 V operation)
• Integrated regulators for multi-voltage operation (1.2 V - 3.3 V)
• Electrically independent input, output, and core supply rails
• Recovered serial clock output option
• Output enable/disable and configurable auto or manual bypass mode
• Automatic and manual modes for rate indication and selection
• Loss of Lock (LOL), Loss of Signal (LOS) and data rate indication
• Two-wire and four-wire serial control interfaces
• Industrial operating temperature range (-40 °C to +85 °C)
The M21350 and M21355 are quad serial digital video reclockers with integrated trace equalization, and automatic rate detect (ARD)
circuitry. The M21350 has a 4:1 mux on the input of each reclocker channel whereas the M21355 has a common 16x4 crosspoint
switch at the input to all four channels. It operates at SDI data rates ranging from 270 Mbps to 2970 Mbps and is compliant to SMPTE
424M, SMPTE292, and SMPTE 259M-C. At 270 Mbps, it also supports DVB-ASI.
The M21350 and M21355 have an input jitter tolerance (IJT) of greater than 0.6 unit intervals (UI) and can provide retimed serial data
outputs with very low alignment jitter. The quad reclockers require a single, external, 27 MHz crystal, which is used as the reference
clock for all four channels. The devices also include per lane analog input equalization for up to 40" of FR4 trace and two connectors in
addition to output de-emphasis.
These devices feature integrated supply regulators, allowing it to be powered from 1.2 V, 1.8 V, 2.5 V, or 3.3 V supply voltages. When
operating at 1.2 V, it consumes only 135 mW per channel at 3G-SDI. Furthermore, the power rails for the core, input, and output
circuitry are electrically independent and as such may be connected to different voltage rails on the board. This feature enables the
M21350/M21355 to be DC coupled to any upstream or downstream device regardless of its input/output voltage level.
Each of the M21350's quad input MUXes allow any of the four inputs to be switched to the respective reclocker channel. The M21355's
16x4 input crosspoint allows any of the 16 inputs to be routed to any of the four integrated reclockers. The devices can be configured by
setting the internal registers though standard two-wire and four-wire interfaces. Limited configuration is also possible through hardware
pin settings.
The M21350 and M21355 are offered in a green and RoHS-compliant, 10 mm x 10 mm, 72-pin QFN packaging.
M21350/M21355 Block Diagram
SDI0P
SDI0N
IE
SDI1P
SDI1N
IE
SDI14P
SDI14N
IE
SDI15P
SDI15N
IE
Reclocker 0
50Ω Buffer
W/ DE
SDO0P
SDO0N
16x4
XPT
or
Quad
4:1 Mux
Reclocker 1
50Ω Buffer
W/ DE
Reclocker 2
50Ω Buffer
W/ DE
SDO1P
SDO1N
SDO2P
SDO2N
Reclocker 3
50Ω Buffer
W/ DE
SDO3/SCLKP
SDO3/SCLKN
1
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