9.2 Features
Advance Information
114
Features of the general USB Module include the following:
•
Integrated 3.3 Volt Regulator with 3.3V Output Pin REGOUT
•
Integrated USB transceiver supporting both full speed and low
speed functions
•
USB Data Control Logic
– Packet decoding/generation
– CRC generation and checking
– NRZI encoding/decoding
– Bit stuffing/de-stuffing
•
USB reset support
•
Suspend and resume operations
– Remote Wakeup support
•
STALL, NAK, and ACK handshake generation
Features of the HUB function include the following:
•
HUB Control Endpoint 0
– 8-byte transmit buffer
– 8-byte receive buffer
•
HUB Interrupt Endpoint 1
– 1-byte transmit buffer
•
USB interrupts
– transaction interrupt driven
– Start of Frame interrupt
– EOF2 interrupt
– End of Packet interrupt
– Signal transition interrupt
– Frame timer locked interrupt
•
HUB repeater and controller function
– downstream and upstream connectivity
– bus state evaluation
– selective reset, suspend and resume
– fault condition hardware detection
MC68HC(7)08KH12
Rev. 1.1
—
Freescale Semiconductor