When operating in Raw FPD-Link IV input mode, the DS90UB638-Q1 receives RAW10 or RAW12 data from a DS90UB633A-Q1 serializer. The data is translated into a RAW10 or RAW12 CSI-2 video stream for forwarding to the CSI-2 transmit port. For each input port, the CSI-2 packet header VC-ID and Data Type are programmable.

In RAW mode the DS90UB638-Q1 deserializer each Rx Port can support up to:

• 12-bits of DATA + 2 SYNC bits for an input PCLK range of 56.25 MHz to 100 MHz in the 12-bit high frequency mode. Line rate = FPD3_PCLK × (2/3) × 28; for example, FPD3_PCLK = 100 MHz, line rate = (100 MHz) × (2/3) × 28 = 1.87 Gbps. Note: No HS/VS restrictions (raw).
• 10-bits of DATA + 2 SYNC bits for an input PCLK range of 75 MHz to 100 MHz in the 10-bit mode. Line rate = FPD3_PCLK/2 × 28; for example, FPD3_PCLK = 100 MHz, line rate = (100 MHz/2) × 28 = 1.40 Gbps Note: HS/VS restricted to no more than one transition per 10 PCLK cycles.

When operating with DVP serializer, the DS90UB638-Q1 deserializer also supports DVP formats such as YUV-422 which have the same pixel packing as RAW8, RAW10 or RAW12. For example; there are 3 YUV CSI-2 data types that have the same pixel packing as RAW10: YUV420 10 bit, YUV420 10 bit Chroma shifted or YUV422 10bit. These formats can be used as well as 8 bit and 12 bit YUV formats which adhere to the same structure as RAW8 and RAW12 respectively.