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On T2080RDB-PC, a single connector is used for MicroSD memory cards, as shown in
the image below.
T2080
SD_WP
SD_CD
SDHC_CLK
CMD
DAT[0:3]
TXBN0304
Clamping
diodes
3V3
3V3
WP
CD
CLK
CMD
DAT[0:3]
Micro
SD Card
Figure 2-12. SDHC interface
2.13 USB interface
The T2080RDB-PC systems have two integrated USB 2.0 controllers, that allow direct
connection to USB ports with appropriate protection circuitry and power supplies.
The board features are:
• High speed (480 Mbit/s), full-speed (12 Mbit/s), and low-speed (1.5 Mbit/s)
operation
• Host mode
• Dual stacked Type A connection
The USB ports connect to a standard Type A connector (USB1 and USB2) for
compatibility with most USB peripherals.
Power for the ports is provided by a MIC2506YM, which supplies 5 V at up to 1 A per
port. The power enable and power-fault-detect pins are connected directly to the T2080
for individual port management.
The image below shows how the USB connectivity is implemented on the T2080RDB-
PC.
USB interface
QorIQ T2080 Reference Design Board (T2080RDB-PC) User Guide, Rev. 0, 04/2016
26
Freescale Semiconductor, Inc.
Содержание T2080RDB-PC
Страница 1: ...QorIQ T2080 Reference Design Board T2080RDB PC User Guide Document Number T2080RDBPCUG Rev 0 04 2016...
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