Renesas SH7641 Manual De Usuario
Section 20 USB Function Module
Rev. 4.00 Sep. 14, 2005 Page 747 of 982
REJ09B0023-0400
Section 20 USB Function Module
20.1 Features
• Incorporates UDC (USB device controller) conforming to the USB standard
Automatic processing of USB protocol
Automatic processing of USB standard commands for endpoint 0 (some commands and
class/vendor commands require decoding and processing by firmware)
class/vendor commands require decoding and processing by firmware)
• Transfer speed: Full-speed
• Endpoint configuration
• Endpoint configuration
Endpoint
Name
Abbreviation
Transfer Type
Maximum
Packet Size
FIFO Buffer
Capacity
(Byte)
Capacity
(Byte)
DMA Transfer
Endpoint 0
EP0s
Setup
8
8
EP0i
Control
IN
8
8
EP0o
Control
OUT
8
8
Endpoint 1
EP1
Bulk OUT
64
128
Possible
Endpoint 2
EP2
Bulk IN
64
128
Possible
Endpoint 3
EP3
Interrupt
8
8
Endpoint 1
Endpoint 2
Endpoint 3
Configuration 1 Interface 0 Alternate setting 0
• Interrupt requests: generates various interrupt signals necessary for USB
transmission/reception
• Clock: External input (48 MHz)
• Power-down mode
• Power-down mode
Power consumption can be reduced by stopping UDC internal clock when USB cable is
disconnected
disconnected
Automatic transition to/recovery from suspend state
• In on-chip transceiver bypass mode (the XVEROFF bit of USBXVERCR resister is 1), a
Philips PDIUSBP11 Series transceiver or compatible product can be connected (when using a
compatible product, carry out evaluation and investigation with the manufacturer supplying the
transceiver beforehand)
compatible product, carry out evaluation and investigation with the manufacturer supplying the
transceiver beforehand)