Sata And Sas Protocols - Altera Cyclone V Device Handbook

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2013.10.17
interface. SDC (JESD204) data rate ranges of 312.5 Mbps to 3.125 Gbps are supported. The minimum
supported data rate is 611 Mbps, so a 5x oversampling factor is used for the SDC (JESD204) data rate of
312.5 Mbps, resulting in a data rate of 1.5625 Gbps.
Figure 4-26: Configurations for the SDC (JESD204) Protocol

SATA and SAS Protocols

Serial ATA (SATA) and Serial Attached SCSI (SAS) are data storage protocol standards that have the primary
function of transferring data (directly or otherwise) between the host system and mass storage devices, such
as hard disk drives, optical drives, and solid-state disks.
These serial storage protocols offer several advantages over older parallel storage protocol (ATA and SCSI)
interfaces:
• Faster data transfer
• Hot swapping (when supported by the operating system)
• Thinner cables for more efficient air cooling
• Increased operation reliability
Transceiver Protocol Configurations in Cyclone V Devices
Send Feedback
Functional Modes
PMA-PCS Interface Width
Functional Modes
Data Rate (Gbps)
Channel Bonding
Word Aligner (Pattern Length)
8B/10B Encoder/Decoder
Rate Match FIFO
Byte SERDES
Byte Ordering
FPGA Fabric-Transceiver
Interface Width
FPGA Fabric-Transceiver
Interface Frequency (MHz)
Configuration option for Configuration option for
data rate range of
312.5 Mbps - 1.5625 Gbps 1.5625 Gbps - 3.125 Gpbs
Single Width
10-bit
Basic Single-Width
10-bit PMA-PCS
Interface Width
1.5625
x1
Enabled (Manual)
Enabled
Disabled
Disabled
Disabled
8-bit
156.25
SATA and SAS Protocols
data rate range of
Single Width
Basic Single-Width
10-bit PMA-PCS
Interface Width
1.5625 - 3.125
x1
Enabled (Manual)
Enabled
Disabled
Enabled
Enabled
16-bit
78.125 -
156.25
Altera Corporation
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