HS_USB 2.0 device
RM0082
464/844
Doc ID 018672 Rev 1
23.2 Block
diagram
shows the block diagram of the UDC-AHB subsystem.
Figure 38.
UDC-AHB subsystem block diagram within the USB 2.0 device
Figure 39.
UDC_Device block diagram
USB 1.1
Transceiver
External RAM (IN Endpoints)
READ Port
WRITE Port
EP FIFO
CNTRL 1
EP FIFO
CNTRL 2
EP FIFO
CNTRL N
External RAM (OUT Endpoints)
READ Port
WRITE Port
Control &
Status
Registers
SOF
Tracker
Receive FIFO
Controller(s)
Interrupt
Manage
r
UTU
UDC
USB 2.0
UTMI
AHB
Slave-only
Interface
DMA
CSR Slave
Access
Interrupt
System
Memory
AHB
Master
(ARM)
AM
B
A
Hi
gh
Pe
rf
or
m
a
nc
e Bu
s(
A
H
B
)
USB_PLUG_DETECT
UDC_AHB
USB_DEVICE
IRQ24
to VIC