USB5744
DS00001855E-page 4
2015-2017 Microchip Technology Inc.
1.0
PREFACE
1.1
General Terms
TABLE 1-1:
GENERAL TERMS
Term
Description
ADC
Analog-to-Digital Converter
Byte
8 bits
CDC
Communication Device Class
CSR
Control and Status Registers
DWORD
32 bits
EOP
End of Packet
EP
Endpoint
FIFO
First In First Out buffer
FS
Full-Speed
FSM
Finite State Machine
GPIO
General Purpose I/O
HS
Hi-Speed
HSOS
High Speed Over Sampling
Hub Feature Controller
The Hub Feature Controller, sometimes called a Hub Controller for short is the internal
processor used to enable the unique features of the USB Controller Hub. This is not to
be confused with the USB Hub Controller that is used to communicate the hub status
back to the Host during a USB session.
I
2
C
Inter-Integrated Circuit
LS
Low-Speed
lsb
Least Significant Bit
LSB
Least Significant Byte
msb
Most Significant Bit
MSB
Most Significant Byte
N/A
Not Applicable
NC
No Connect
OTP
One Time Programmable
PCB
Printed Circuit Board
PCS
Physical Coding Sublayer
PHY
Physical Layer
PLL
Phase Lock Loop
RESERVED
Refers to a reserved bit field or address. Unless otherwise noted, reserved bits must
always be zero for write operations. Unless otherwise noted, values are not guaran-
teed when reading reserved bits. Unless otherwise noted, do not read or write to
reserved addresses.
SDK
Software Development Kit
SMBus
System Management Bus
UUID
Universally Unique IDentifier
WORD
16 bits
