![](https://csdnimg.cn/release/download_crawler_static/10454181/bg10.jpg)
i.MX 6Dual/6Quad Applications Processors for Industrial Products, Rev. 4, 07/2015
16 Freescale Semiconductor Inc.
Modules List
uSDHC-1
uSDHC-2
uSDHC-2
uSDHC-4
SD/MMC and SDXC
Enhanced
Multi-Media Card /
Secure Digital Host
Controller
Connectivity
Peripherals
i.MX 6Dual/6Quad specific SoC characteristics:
All four MMC/SD/SDIO controller IPs are identical and are based on the
uSDHC IP. They are:
• Conforms to the SD Host Controller Standard Specification version 3.0
• Fully compliant with MMC command/response sets and Physical Layer
as defined in the Multimedia Card System Specification,
v4.2/4.3/4.4/4.41 including high-capacity (size > 2 GB) cards HC MMC.
Hardware reset as specified for eMMC cards is supported at ports #3
and #4 only.
• Fully compliant with SD command/response sets and Physical Layer
as defined in the SD Memory Card Specifications, v3.0 including
high-capacity SDHC cards up to 32 GB and SDXC cards up to 2TB.
• Fully compliant with SDIO command/response sets and
interrupt/read-wait mode as defined in the SDIO Card Specification,
Part E1, v1.10
• Fully compliant with SD Card Specification, Part A2, SD Host
Controller Standard Specification, v2.00
All four ports support:
• 1-bit or 4-bit transfer mode specifications for SD and SDIO cards up to
UHS-I SDR104 mode (104 MB/s max)
• 1-bit, 4-bit, or 8-bit transfer mode specifications for MMC cards up to 52
MHz in both SDR and DDR modes (104 MB/s max)
However, the SoC-level integration and I/O muxing logic restrict the
functionality to the following:
• Instances #1 and #2 are primarily intended to serve as external slots or
interfaces to on-board SDIO devices. These ports are equipped with
“Card Detection” and “Write Protection” pads and do not support
hardware reset.
• Instances #3 and #4 are primarily intended to serve interfaces to
embedded MMC memory or interfaces to on-board SDIO devices.
These ports do not have “Card detection” and “Write Protection” pads
and do support hardware reset.
• All ports can work with 1.8 V and 3.3 V cards. There are two completely
independent I/O power domains for Ports #1 and #2 in four bit
configuration (SD interface). Port #3 is placed in his own independent
power domain and port #4 shares power domain with some other
interfaces.
VDOA VDOA Multimedia
Peripherals
The Video Data Order Adapter (VDOA) is used to re-order video data from
the “tiled” order used by the VPU to the conventional raster-scan order
needed by the IPU.
VPU Video Processing
Unit
Multimedia
Peripherals
A high-performing video processing unit (VPU), which covers many
SD-level and HD-level video decoders and SD-level encoders as a
multi-standard video codec engine as well as several important video
processing, such as rotation and mirroring.
See the i.MX 6Dual/6Quad reference manual (IMX6DQRM) for complete
list of VPU’s decoding/encoding capabilities.
WDOG-1 Watchdog Timer
Peripherals
The Watchdog Timer supports two comparison points during each
counting period. Each of the comparison points is configurable to evoke
an interrupt to the ARM core, and a second point evokes an external event
on the WDOG line.
Table 2. i.MX 6Dual/6Quad Modules List (continued)
Block
Mnemonic
Block Name Subsystem Brief Description