Figure 8.4 Rfu Interface Of Usb - Renesas H8S/2158 User Manual

Section 8 RAM-FIFO Unit (RFU)
USB
This LSI
Rev. 3.00 Jan 25, 2006 page 194 of 872
REJ09B0286-0300
USB host
Function core section
(USB protocol processing section)
Transmission
data (12 MHz)
EP4 transmit buffer
(2-byte buffer)
Transmisison data
(8 MHz to 24 MHz)
Internal data bus
RFU
Data area for
On-chip RAM
communication
(10 kbytes)
pipe 1
(32 to 2048 bytes)

Figure 8.4 RFU Interface of USB

(12 Mbps)
Transmission
data (12 MHz)
EP5 receive buffer
(2-byte buffer)
Reception data
(8 MHz to 24 MHz)
Data area for
communication
pipe 2
(32 to 2048 bytes)