DRA790 Datasheet, PDF (355/436 Pages) Texas Instruments – Infotainment Applications Processor

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DRA790, DRA791
DRA793, DRA797
SPRS968A – AUGUST 2016 – REVISED FEBRUARY 2017
• Support SDA 3.00 Part A2 programming model
• Support SDA 3.00 Part A2 DMA feature (ADMA2)
• Supported data transfer rates:
– MMCi supports the following SD v3.0 data transfer rates:
• DS mode (3.3V IOs): up to 12 MBps (24 MHz clock)
• HS mode (3.3V IOs): up to 24 MBps (48 MHz clock)
• SDR12 (1.8V IOs): up to 12 MBps (24 MHz clock)
• SDR25 (1.8V IOs): up to 24 MBps (48 MHz clock)
• SDR50 (1.8V IOs): up to 48 MBps (96 MHz clock) - MMC1 and MMC3 only
• DDR50 (1.8V IOs): up to 48 MBps (48 MHz clock) - MMC1 only
• SDR104 (1.8V IOs) cards can be supported up to 192 MHz clock (96 MBps max) - MMC1 only
– MMCi supports the Default SD mode 1-bit data transfer up to 24Mbps (3MBps)
– Only MMC2 supports also the following JC64 v4.5 data transfer rates:
• Up to 192 MBps in eMMC mode, 8-bit SDR mode (192 MHz clock frequency)
• Up to 96 MBps in eMMC mode, 8-bit DDR mode (48 MHz clock frequency)
• All eMMC/SD/SDIO controllers are connected to 1,8V/3.3V compatible I/Os to support 1,8V/3.3V
signaling
NOTE
eMMC functionality is supported fully by MMC2 only. The other MMC modules are capable of
eMMC functionality, but are not timing-optimized for eMMC.
The differences between the eMMC/SD/SDIO host controllers and a standard SD host controller defined
by the SD Card Specification, Part A2, SD Host Controller Standard Specification, v3.00 are:
• The clock divider in the eMMC/SD/SDIO host controller supports a wider range of frequency than
specified in the SD Memory Card Specifications, v3.0. The eMMC/SD/SDIO host controller supports
odd and even clock ratio.
• The eMMC/SD/SDIO host controller supports configurable busy time-out.
• ADMA2 64-bit mode is not supported.
• There is no external LED control.
NOTE
Only even ratios are supported in DDR mode.
For more information, see chapter eMMC/SD/SDIO of the device TRM.
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Detailed Description 355