TMS320C6A8167 Datasheet, PDF (264/280 Pages) Texas Instruments – TMS320C6A816x Integra DSP+ARM Processors

TMS320C6A8168
TMS320C6A8167
SPRS680 – OCTOBER 2010
www.ti.com
8.20 Serial ATA Controller (SATA)
The Serial ATA (SATA) peripheral provides a direct interface for up to two hard disk drives (SATA) and
supports the following features:
• Serial ATA 1.5 Gbps and 3 Gbps speeds
• Integrated PHY
• Integrated Rx and Tx data buffers
• Supports all SATA power management features
• Hardware-assisted native command queuing (NCQ) for up to 32 entries
• Supports port multiplier with command-based switching for connection to multiple hard disk drives
• Activity LED support.
For more detailed information on the SATA, see the SATA chapter in the TMS320C6A8x Integra
DSP+ARM Processors Technical Reference Manual (literature number SPRUGX9).
8.20.1 SATA Interface Design Guidelines
This section provides PCB design and layout guidelines for the SATA interface. The design rules constrain
PCB trace length, PCB trace skew, signal integrity, cross-talk, and signal timing. Simulation and system
design work has been done to ensure the SATA interface requirements are met.
A standard 100-MHz differential clock source must be used for SATA operation (for details, see
Section 7.3.2).
8.20.1.1 SATA Interface Schematic
Figure 8-61 shows the data portion of the SATA interface schematic. The specific pin numbers can be
obtained from Table 3-17, Serial ATA Terminal Functions.
SATA Interface (Processor)
SATA Connector
SATA_TXN
SATA_TXP
SATA_RXN
SATA_RXP
10 nF
10 nF
10 nF
10 nF
TX-
TX+
RX-
RX+
Figure 8-61. SATA Interface High-Level Schematic
8.20.1.2 Compatible SATA Components and Modes
Table 8-84 shows the compatible SATA components and supported modes. Note that the only supported
configuration is an internal cable from the processor host to the SATA device.
Transfer Rates
eSATA
xSATA
Backplane
Internal Cable
Table 8-84. SATA Supported Modes
PARAMETER
MIN
1.5
-
-
-
-
MAX
3.0
-
-
-
-
UNIT
Gbps
-
-
-
-
SUPPORTED
No
No
No
Yes
264 Peripheral Information and Timings
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