Freescale Semiconductor PowerQUICC MPC885 Reference Manual page 962

Table VI-1. Acronyms and Abbreviated Terms (continued)
Term
UBR Unspecified bit rate
UBR+ Unspecified bit rate with minimum cell rate guarantee
UART Universal asynchronous receiver/transmitter
UPM User-programmable machine
USART Universal synchronous/asynchronous receiver/transmitter
VCC Virtual channel connection
VCI Virtual circuit identifier
VP Virtual path
VPC Virtual path connection
VPI Virtual path identifier
UTOPIA Universal test and operations physical interface for ATM
VBR Variable bit rate
VC Virtual channel or virtual circuit
WAN Wide area network
VI-6
MPC885 PowerQUICC Family Reference Manual, Rev. 2
Meaning
Freescale Semiconductor