Preliminary
USB2.0 DEVICE
S3C2451X RISC MICROPROCESSOR
17-2
Preliminary product information describe products that are in development,
for which full characterization data and associated errata are not yet available.
Specifications and information herein are subject to change without notice.
BLOCK DIAGRAM
DP
DM
UTMI Interface
Serial Interface
AHB
Master/Slave
Interface
AHB
Master/Slave
Interface
PHY Control Signal
PHY Clock
(48Mhz or
30Mhz)
PHY Clock
(30Mhz)
PHY or Internal
Clock
(48Mhz)
Internal Clock
(48Mhz)
System
Controller
SFR setting
USB 2.0 Function
USB 2.0 PHY
Control Block
USB 1.1
Host
USB 2.0
PHY
External
USB HOST
or Device
Serial Interface 2
USB 1.1
Transceiver
DP
DN
Figure 17-1. USB2.0 Block Diagram
USB2.0 Function has a AHB Slave which provides the microcontroller with read and write access to the Control
and Status Registers. And also Function has an AHB Master to enable the link to transfer data on the AHB. The
S3C2451x USB system shown as Figure 17-1, can be configured as following :
1. USB 1.1 Host 1 Port & USB 2.0 Device 1 Port
2. USB 1.1 Host 2 Ports