The DS32EL0421/DS32ELX0421SQX/NOPB is a 125 MHz to 312.5 MHz (DDR) serializer for high-speed serial transmission over FR-4 printed circuit board backplanes, balanced cables, and optical fiber. This easy-to-use chipset integrates advanced signal and clock conditioning functions, with an FPGA friendly interface.
The DS32EL0421/DS32ELX0421SQX/NOPB serializes up to 5 parallel input LVDS channels to create a maximum data payload of 3.125 Gbps. If the integrated DC-balance encoding is enabled, the maximum data payload achievable is 2.5 Gbps.
The DS32EL0421/DS32ELX0421SQX/NOPB serializers feature remote sense capability to automatically detect and negotiate link status with its companion DS32EL0124/DS32ELX0124 deserializers without requiring an additional feedback path.
The parallel LVDS interface reduces FPGA I/O pins, board trace count and alleviates EMI issues, when compared to traditional single-ended wide bus interfaces.
The DS32EL0421/DS32ELX0421SQX/NOPB is programmable through a SMBus interface as well as through control pins.
Feature
- 5-bit DDR LVDS Parallel Data Interface
- Programmable Transmit De-emphasis
- Configurable Output Levels (VOD)
- Selectable DC-balanced Encoder
- Selectable Data Scrambler
- Remote Sense for Automatic Detection and Negotiation of Link Status
- On Chip LC VCOs
- Redundant Serial Output (ELX device only)
- Data Valid Signaling to Assist with Synchronization of Multiple Receivers
- Supports AC- and DC-coupled Signaling
- Integrated CML and LVDS Terminations
- Configurable PLL Loop Bandwidth
- Programmable Output Termination (50 or 75).
- Built-in Test Pattern Generator
- Loss of Lock and Error Reporting
- Configurable via SMBus
- 48-pin WQFN Package with Exposed DAP
- 1.25 to 3.125 Gbps Serial Data Rate
- 125 to 312.5 MHz DDR Parallel Clock
- -40° to +85°C Temperature Range
- >8 kV ESD (HBM) Protection
- Low Intrinsic Jitter — 35ps at 3.125 Gbps
