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Datasheet of MCIMX53SMD - TABLET SABRE PLATFORM MCIMX53
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Freescale Semiconductor
MCIMX53SMD Board Hardware User’s Guide, Rev. 0
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maintain the correct impedance between the two traces. The DDR3 SDRAM should be rated for 1066 MHz or
faster.
For skilled designers wishing to double the amount of DDR3 SDRAM available for being used with the i.MX53
processor using eight x8 width DDR3 chips, the following considerations should be weighed carefully before
proceeding: Four DDR3 chips on a chip select line will exceed the current supply capability of the VBUCKMEM
power source. An additional 1.5V power source would need to be added. Also, attaching the address lines to
eight DDR3 chips is a great amount of loading. Premium PCB materials would be required to reduce losses.
Using eight DDR3 SDRAM chips in this manner has not been tried by Freescale, and is not formally
recommended.
5.5.
SD Card Connector
The SD Card Connector (J13) is directly connected to the eSDHC channel 1 module of the i.MX53 processor.
This card socket will support up to a 4-bit data transfer from an SD card or a MMC card inserted into the
socket. The main power for the SD Card Socket is 3.3V from DCDC_3V3_BB. The developer should note that
the internal i.MX53 processor eSDHC module is powered by a 3V3 source. Therefore, changing the voltage of
the card socket on the MCIMX53SMD board is not recommended.
The SD1 Clock trace has a 22Ω series termination resistor (R412). This resistor is inserted to prevent a reflected
signal from being sensed by the i.M53 processor. This has been found to occur on MMC card operation and is
recommended for all designs. In addition, for 50 MHz performance, all SD signals should have equal length.
5.6.
eMMC 4.4
One eMMC4.4 is directly connected to the eSDHC channel 3 of the i.MX53 processor. This port will support 8-
bit data transfer from eMMC. The main power for the eMMC is 3.3V from DCDC_3V3_BB. The SD3 Clock trace
has a 22Ω series termination resistor (R146). This resistor is inserted to prevent a reflected signal from being
sensed by the i.M53 processor. This has been found to occur on MMC card operation and is recommended for
all designs. In addition, for 50MHz performance, all SD signals should have equal length.
5.7.
HDMI
The MCIMX53SMD board has a mini-HDMI that can playback 1080p. The MCIMX53SMD board uses SiI9022
from Silicon Image as HDMI bridge on board. The i.MX53 processor controls SiI9022 through the I2C port. IPU
parallel interface and SPDIF are connected with SiI9022.
The SiI9022 HDMI transmitter supports the High Definition Multimedia Interface (HDMI) Specification on a
wide range of mobile products. High definition camcorders, digital still cameras, and personal mobile devices
connect directly to a large installed base of HDMI TVs and DVI PC monitors, by using the flexible audio and
video interfaces provided by this ultra-low-power solution. S/PDIF or I2S inputs enable a pure digital audio
connection to virtually any system audio processor or codec. This transmitter is the next generation of its
family and is an enhanced replacement for the SiI9022/SiI9022 device, with lower power and enhanced
features. The SiI9022 transmitter supports High-bandwidth Digital Content Protection (HDCP) for devices that
require secure content delivery.
5.8.
VGA Video Output
The TV Encoder module of the i.MX53 processor provides three component video output signals that can be
used as either a TV signal or a VGA signal to a connected monitor. The MCIMX53SMD board configures these
signals for being used as a VGA output through connector, J131. In addition to the three video signals,
Horizontal and Vertical Synchronization signals, I2C Data and Clock, and a 5V reference signal are connected to
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