T1024 datasheet(24/49 Pages) FREESCALE

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2.13 SDHC interface

The enhanced SD Host Controller (eSDHC) provides an interface between host system

and SD/MMC cards. The Secure Digital (SD) card is specifically designed to meet the

security, capacity, performance, and environmental requirements, inherent in emerging

audio and video consumer electronic devices. Booting from eSDHC interface is

supported using the processor’s on-chip ROM.

On the T1024RDB, a single connector is used for both SD and MMC memory cards, as

shown in the below figure.

1.8 V or 3.3 V

T1024

SD_WP

SD_CD

SDHC_CLK

CMD

DAT[0:3]

SD Card

CLK

CMD

DAT[0:3]

3.3 V

Clamping

Diodes

Figure 2-14. SDHC interface

2.14 USB interface

The T1024RDB systems have two integrated USB 2.0 controllers (USB1 and USB2), 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)

operations

• Host mode

• Dual-stacked Type A connection

Each USB ports are connected to a standard Type A connector for compatibility with

most USB peripherals.

USB interface

QorIQ T1024 Reference Design Board User Guide, Rev. 0, 04/2015

Freescale Semiconductor, Inc.

T1024 Arkusz danych(PDF) 24 Page - Freescale Semiconductor, Inc