SH7760 Datasheet, PDF (765/1345 Pages) Renesas Technology Corp – SuperHTM RISC engine

Section 21 USB Host Module (USB)
The USB Host Controller module supports Open Host Controller Interface (Open HCI)
Specification for the Universal Serial Bus (USB) as well as the Universal Serial Bus specification
ver.1.1.
The Open HCI Specification for the USB is a register-level description of Host Controller for the
USB.
It is necessary to refer Open HCI specification to develop drivers for this USB Host Controller and
hardware.
Abbreviations used in this section are shown below.
HC: host controller
HCD: host controller driver
21.1 Features
The USB host module has the following features.
• Supports the register set compliant with the Open Host Controller Interface (Open HCI)
Specification Release 1.0*
• Compatible with the Universal Serial Bus Ver.1.1 Specifications.
• Supports full speed (12 Mbps) mode and low speed (1.5 Mbps) mode as USB transfer speeds
• Supports four transfer modes (control transfer, bulk transfer, interrupt transfer, and
isochronous transfer)
• Supports the overcurrent detection circuit
• Supports 127 endpoints at the maximum
• One USB port
• On-chip 8-kbyte SRAM used as shared memory which is defined in the OpenHCI specification
Note: * Part of registers is not supported. For details, see section 21.3, Register Descriptions and
section 21.6, Restrictions on HcRhDescriptorA.
Rev. 1.0, 02/03, page 715 of 1294