NUC960ADN Datasheet, PDF (187/420 Pages) Nuvoton Technology Corporation – 32-BIT ARM926EJ-S BASED MCU

NUC960ADN
6.8 USB Host Controller (USBH)
32-BIT ARM926EJ-S BASED MCU
The Universal Serial Bus (USB) is a fast, bi-directional, isochronous, low-cost, dynamically attachable
serial interface standard intended for USB devices. The USB is a 4-wire serial cable bus that supports
serial data exchange between a Host Controller and a network of peripheral devices. The attached
peripherals share USB bandwidth through a host-scheduled, token-based protocol. Peripherals may be
attached, configured, used, and detached, while the host and other peripherals continue operation (i.e.
hot plug and unplug is supported).
A major design goal of the USB standard was to allow flexible, plug-and-play networks of USB devices. In
any USB network, there will be only one host, but there can be many devices and hubs.
The USB Host Controller includes the following features
 Fully compliant with USB Revision 2.0 specification.
 Enhanced Host Controller Interface (EHCI) Revision 1.0 compatible.
 Open Host Controller Interface (OHCI) Revision 1.0 compatible.
 Supports high-speed (480Mbps), full-speed (12Mbps) and low-speed (1.5Mbps) USB devices.
 Supports Control, Bulk, Interrupt, Isochronous and Split transfers.
 Integrated a port routing logic to route full/low speed device to OHCI controller.
 Built-in DMA for real-time data transfer.
6.8.1 Register Mapping
Register
Offset
R/W ^Description
Capability Registers (USBH_BA = 0xB000_5000)
EHCVNR
0xB000_5000
R _{EHCI Version Number Register}
EHCSPR
0xB000_5004
R EHCI Structural Parameters Register
EHCCPR
0xB000_5008
R EHCI Capability Parameters Register
Operational Registers
UCMDR
0xB000_5020 _{R/W USB Command Register}
USTSR
0xB000_5024 _{R/W USB Status Register}
UIENR
0xB000_5028 _{R/W USB Interrupt Enable Register}
UFINDR
0xB000_502C _{R/W USB Frame Index Register}
Reset Value
0x0095_0020
0x0000_0012
0x0000_0000
0x0008_0000
0x0000_1004
0x0000_0000
0x0000_0000
187
Publication Release Date: Jun. 18, 2010
Revision: A3