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Serial ATA Dual Host Controller
The LDS_SATA HOST DUAL XV5 IP incorporates the Transport layer, the Link layer and the PHY layer on a Xilinx Virtex 5 FPGA. The LDS SATA HOST DUAL XV5 IP is compliant with Serial ATA II specification and signaling rate is 1.5Gbps and scalable to GEN 2. The LDS SATA HOST DUAL XV5 IP is fully synchronous with system frequency (Clock_sys) at 37.5MHz in case of GEN1 speed selection and 75MHz in case of GEN 2 speed selection. The VHDL source code format is available for ease of customization. The customization can be done by Logic Design Solutions and DO254 documentation is available on request.
Features
- Physical Layer features
- Detect OOB and COMWAKE
- Detect the K28.5 comma character and provide a 16 bit parallel output
- Power management mode handled by state machine (shared between Phy and Link layer)
- Provides error indication to upper layers
- 8b/10b encoding and decoding in Xilinx Virtex 5 GTP Macro
- Fixed speed seclection
- Link Layer features
- Scrambling of tx data and descrambling of rx data
- CRC 32 calculation and check from Xilinx Virtex 5 hard macro
- Report transmission status and error to Transport Layer
- Enable BIST loopback and pattern generation modes
- Auto inserted hold primitive to avoid FIFO overflow and underflow
- Partial and slumber power management modes
- The interface between the link layer and the transport layer is 32-bit wide
- Transport Layer features
- 48-bits sector address
- Programmed IO (PIO) and DMA modes
- Support BIST FIS transmission and reception
- Automatic error FIS retry capability
- Implement Shadow Registers and SATA SuperSet registers
- Simple synchronous CPU and DMA Interface for data transfers including DMA hold-off capability
- DMA interface can be connected easily to memory space or FIFOs
- Support DMA Abort primitive
- 128-Word Ingress and Egress FIFO between Transport and Link Layer
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