TI DS90UB903QSQX/NOPB

The DS90UB903Q/DS904Q chipset provides an FPD-Link III interface with a high-speed forward channel and a bidirectional control channel for data transmission over a single differential pair. The DS90UB903Q/904Q incorporates differential signaling on both the high-speed forward channel and the bidirectional control channel data paths. This serializer/deserializer pair targets direct connection between a graphics host controller and a display module. The chipset is suited for driving video data to displays requiring 18-bit color depth (RGB666 + HS, VS, and DE) along with a bidirectional control channel bus. The primary transport converts 21-bit data over a single high-speed serial data stream, together with a separate low-latency bidirectional control channel that accepts control information from an I²C port. Embedded clock technology enables transparent full-duplex communication over a single differential pair, carrying asymmetric bidirectional control channel information in both directions. This single serial data stream simplifies wide data bus transmission over PCB traces and cables by eliminating skew between parallel data and clock paths. As a result, limiting the data path width reduces system cost, PCB layer count, cable width, and connector size and pin count.

In addition, the deserializer input provides equalization control to compensate for losses introduced by longer-distance media. Internal DC equalization encoding/decoding is used to support AC-coupled interconnects.

The serializer is offered in a 40-pin Very Thin Quad Flat No-Lead (WQFN) package, while the deserializer is offered in a 48-pin WQFN package.

• 10MHz to 43MHz input parallel port clock (PCLK) support
• 210Mbps to 903Mbps data throughput
• Single differential pair interconnect with bidirectional control interface channel supporting I2C
• Embedded clock with DC-balanced encoding to support AC-coupled interconnects
• Capable of driving shielded twisted pair cables up to 10 meters
• I2C-compatible serial interface
• Single hardware device address pin
• Up to 4 general-purpose inputs (GPI) / outputs (GPO)
• LOCK output reporting and AT-SPEED BIST diagnostic feature for connection integrity verification
• Integrated termination resistors
• 1.8V or 3.3V compatible parallel data interface
• 1.8V single power supply
• Compliant with ISO 10605 ESD and IEC 61000-4-2 ESD standards
• Automotive-grade: compliant with AEC-Q100 Grade 2 requirements
• Temperature range: -40°C to ±105°C
• No reference clock required on deserializer
• Programmable receive equalization
• EMI/EMC migration – DES programmable spread spectrum clock generation (SSCG) output
• DES receiver interleaved output

• Automotive Display Systems
• Central Information Display
• Navigation Display
• Rear Seat Entertainment System
• Touch Display