Information

Chapter 41
USB Device Charger Detection Module (USBDCD)
41.1 Preface
41.1.1 References
The following publications are referenced in this document. For updates to these
specifications, see http://www.usb.org.
• USB Battery Charging Specification Revision 1.1, USB Implementers Forum
• Universal Serial Bus Specification Revision 2.0, USB Implementers Forum
41.1.2 Acronyms and abbreviations
The following table contains acronyms and abbreviations used in this document.
Table 41-1. Acronyms and abbreviated terms
Term Meaning
FS Full speed (12 Mbit/s)
HS High speed (480 Mbit/s)
I
DEV_DCHG
Current drawn when the USB device is connected to a dedicated charging port
I
DEV_HCHG_LFS
Current drawn when the USB device is connected to an FS charging host port
I
DM_SINK
Current sink for the D– line
I
DP_SRC
Current source for the D+ line
I
SUSP
Current drawn when the USB device is suspended
LDO Low dropout
LS Low Speed (1.5 Mbit/s)
N/A Not applicable
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K20 Sub-Family Reference Manual, Rev. 2, Feb 2012
Freescale Semiconductor, Inc. 925