K60P100M100SF2RM Datasheet, PDF (1276/1809 Pages) Freescale Semiconductor, Inc – K60 Sub-Family Reference Manual

Introduction
Term
OTG
R_{DM_DWN}
V_{DAT_REF}
V_{DP_SRC}
V_LGC
Table 46-1. Acronyms and Abbreviated Terms (continued)
Meaning
On-The-Go
D- pulldown resistance for data pin contact detect
Data detect reference voltage for the voltage comparator
Voltage source for the D+ line
Threshold voltage for logic high
46.1.3 Glossary
The following table shows a glossary of terms used in this document.
Table 46-2. Glossary of Terms
Term
Transceiver
PHY
Attached
Connected
Suspended
Component
Definition
Module that implements the physical layer of the USB standard (FS or LS only)
Module that implements the physical layer of the USB standard (HS capable)
Device is physically plugged into USB port but has not enabled either D+ or D- pullup resistor
Device is physically plugged into USB port and has enabled either D+ or D- pullup resistor
After 3 ms of no bus activity the USB device enters suspend mode.
The hardware and software that make up a subsystem.
46.2 Introduction
NOTE
For the chip-specific implementation details of this module's
instances see the chip configuration chapter.
The USBDCD module works with the USB transceiver to detect if the USB device is
attached to a charging port (either a dedicated charging port or a charging host). System
software coordinates the detection activites of the module and controls an off-chip
integrated circuit that performs the battery charging.
46.2.1 Block Diagram
The following figure is a high level block diagram of the module.
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K60 Sub-Family Reference Manual, Rev. 6, Nov 2011
Freescale Semiconductor, Inc.