Information

4.5.7.2 USB Device Charger Detect (USBDCD)

• Compatible with systems powered from:

• Rechargable battery

• Non-rechargable battery

• External 3.3v LDO regulator powered from USB or

• Directly from USB using internal regulator

• Option to set nominal 3.42V output to support Bayer use case

• Programmable event timers for flexibility and better compatibility with future udpates to the standards

• Compliant with the latest industry standard specification, USB Battery Charging Specification, Revision 1.1

4.5.7.3 USB Voltage Regulator

• Updated to output 3.5V

• 5V regulator input typically provided by USB VBUS power

• 3.35V regulated output powers on-chip USB transceiver

• Output pin from regulator can be used to power external board components and source up to 120mA

• Eliminates cost of external LDO

• 3.35V regulated output can power MCU main power supply

4.5.7.4 USB On-The-Go Module (HS/FS/LS)

• Complies with USB specification rev 2.0

• USB host mode

• Supports enhanced-host-controller interface (EHCI)

• HS/FS/LS operation via an external ULPI transceiver

• Supported by Linux and other commercially available operating systems

• USB device mode

• HS/FS operation via an external ULPI transceiver

• Supports one upstream facing port

• Supports four programmable, bidirectional USB endpoints, including endpoint 0

• Suspend mode/low power

• As host, firmware can suspend individual devices or the entire USB and disable chip clocks for low-power

operation

• Device supports low-power suspend

• Remote wake-up supported for host and device

• Integrated with the processor’s low power modes

• Support for off-chip HS/FS/LS transceiver

• External ULPI transceiver supports high speed (480 Mbps), full speed, and low speed operation in host mode,

and high-speed and full-speed operation in device mode

• Interface uses 8-bit single-data-rate ULPI data bus

• ULPI PHY supplies a 60 MHz USB reference clock input to the processor

4.5.7.5 CAN Module

• Supports the full implementation of the CAN Specification Version 2.0, Part B

• Standard data and remote frames (up to 109 bits long)

• Extended data and remote frames (up to 127 bits long)

• 0–8 bytes data length

• Programmable bit rate up to 1 Mbit/sec

• Content-related addressing

Communication interfaces

K20 Family Product Brief, Rev. 11, 08/2012

Freescale Semiconductor, Inc. 43