Freescale Semiconductor TWR-K70F120M High-Performance MCUs with Graphics LCD, Connectivity and Security TWR-K70F120M-KIT TWR-K70F120M-KIT 用户手册
产品代码
TWR-K70F120M-KIT
TWR-K70F120M Tower Module User's Manual
Page 14 of 24
TWR-SER
J2
3-4
TWR-SER
J3
2-3
TWR-SER
J12
9-10
2.14 USB
The K70FN1M0 features two different USB modules--a USB full-speed/low-speed OTG/Host/Device
controller with built-in transceiver and a high-speed OTG/Host/Device controller that requires a
external ULPI PHY.
controller with built-in transceiver and a high-speed OTG/Host/Device controller that requires a
external ULPI PHY.
2.14.1 FS/LS USB
The TWR-K70F120M routes the USB D+ and D- signals from the K70 MCU to the Primary Connector,
allowing the connection to external USB connectors or additional circuitry on a Tower peripheral
module.
The TWR-SER module included as part of the TWR-K70F120M-KIT provides a USB OTG/Host/Device
interface with a mini-AB USB connector. There are many configuration options that can be selected to
evaluate different USB modes of operation. By default, the TWR-SER is configured for USB Device
operation. Please refer to the documentation included with the TWR-SER for more information on the
configuration options.
allowing the connection to external USB connectors or additional circuitry on a Tower peripheral
module.
The TWR-SER module included as part of the TWR-K70F120M-KIT provides a USB OTG/Host/Device
interface with a mini-AB USB connector. There are many configuration options that can be selected to
evaluate different USB modes of operation. By default, the TWR-SER is configured for USB Device
operation. Please refer to the documentation included with the TWR-SER for more information on the
configuration options.
2.14.2 HS USB
The TWR-K70F120M routes the ULPI interface signals for the high-speed USB module to the Secondary
Connector allowing the connection to an external ULPI PHY or additional circuitry on a Tower
peripheral module.
The TWR-SER2 module includes a ULPI PHY that can be used with the TWR-K70F120M in order to
evaluate the high-speed USB functionality. The TWR-SER2 is not included as part of the TWR-
K70F120M-KIT, but the boards can be ordered individually from Freescale.
Connector allowing the connection to an external ULPI PHY or additional circuitry on a Tower
peripheral module.
The TWR-SER2 module includes a ULPI PHY that can be used with the TWR-K70F120M in order to
evaluate the high-speed USB functionality. The TWR-SER2 is not included as part of the TWR-
K70F120M-KIT, but the boards can be ordered individually from Freescale.
2.15 Secure Digital Card Slot
A Micro-Secure Digital (SD) card slot is available on the TWR-K70F120M connected to the SD Host
Controller (SDHC) signals of the K70 MCU. This slot will accept micro-SD memory cards. Refer to Table
6 “I/O Connectors and Pin Usage Table” for the SDHC signal connection details.
Controller (SDHC) signals of the K70 MCU. This slot will accept micro-SD memory cards. Refer to Table
6 “I/O Connectors and Pin Usage Table” for the SDHC signal connection details.
2.16 External Bus Interface – FlexBus
The K70 device features a multi-function external bus interface called the FlexBus interface controller
capable of interfacing to slave-only devices. The FlexBus interface is not used directly on the TWR-
K70F120M. Instead, a subset of the FlexBus is connected to the Primary Connector so that the external
bus can access devices on Tower peripheral modules. Refer to Table 7 “TWR-K70F120M Primary
Connector Pinout” and sheet 8 of the TWR-K70F120M schematics for more details.
capable of interfacing to slave-only devices. The FlexBus interface is not used directly on the TWR-
K70F120M. Instead, a subset of the FlexBus is connected to the Primary Connector so that the external
bus can access devices on Tower peripheral modules. Refer to Table 7 “TWR-K70F120M Primary
Connector Pinout” and sheet 8 of the TWR-K70F120M schematics for more details.