mcf51jf128 Freescale Semiconductor, Inc, mcf51jf128 Datasheet - Page 990

• Manufacturer Part Number: mcf51jf128
• Description: Mcf51jf128 Reference Manual
• Manufacturer: Freescale Semiconductor, Inc

Introduction
40.1.3 Glossary
The following table shows a glossary of terms used in this document.
40.2 Introduction
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.
40.2.1 Block Diagram
The following figure is a high level block diagram of the module.
990
OTG
R
V
V
V
Transceiver
PHY
Attached
Connected
Suspended
Component
Term
Term
DAT_REF
DP_SRC
LGC
DM_DWN
Table 40-1. Acronyms and Abbreviated Terms (continued)
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
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.
Meaning
Definition
MCF51JF128 Reference Manual, Rev. 2, 03/2011
Table 40-2. Glossary of Terms
Preliminary
Freescale Semiconductor, Inc.