Cypress SL811HS 用户手册

SL811HS Embedded USB Host/Slave Controller

•

198 Champion Court

•

San Jose

,

CA 95134-1709

•

408-943-2600

Document 38-08008 Rev. *D

 Revised February 2, 2007

• First USB Host/Slave controller for embedded systems in 

the market with a standard microprocessor bus interface

• Supports both full speed (12 Mbps) and low speed (1.5 

Mbps) USB transfer in both master and slave modes

• Conforms to USB Specification 1.1 for full- and low speed

• Operates as a single USB host or slave under software 

control

• Automatic detection of either low- or full speed devices

• 8-bit bidirectional data, port I/O (DMA supported in slave 

mode) 

• On-chip SIE and USB transceivers

• On-chip single root HUB support

• 256-byte internal SRAM buffer

• Ping-pong buffers for improved performance

• Operates from 12 or 48 MHz crystal or oscillator (built-in 

DPLL)

• 5V-tolerant interface 

• Suspend/resume, wake up, and low-power modes are 

supported

• Auto-generation of SOF and CRC5/16

• Auto-address increment mode, saves memory 

READ/WRITE cycles 

• Development kit including source code drivers is available

• 3.3V power source, 0.35 micron CMOS technology

• Available in both a 28-pin PLCC package and a 48-pin 

TQFP package

The SL811HS is an Embedded USB Host/Slave Controller
capable of communicating in either full speed or low speed.
The SL811HS interfaces to devices such as microprocessors,
microcontrollers, DSPs, or directly to a variety of buses such
as ISA, PCMCIA, and others. The SL811HS USB Host
Controller conforms to USB Specification 1.1.

The SL811HS incorporates USB Serial Interface functionality
along with internal full or low speed transceivers. The
SL811HS supports and operates in USB full speed mode at 12
Mbps, or in low speed mode at 1.5 Mbps. When in host mode,
the SL811HS is the master and controls the USB bus and the
devices that are connected to it. In peripheral mode, otherwise
known as a slave device, the SL811HS operates as a variety
of full- or low speed devices.

The SL811HS data port and microprocessor interface provide
an 8-bit data path I/O or DMA bidirectional, with interrupt
support to allow easy interface to standard microprocessors or
microcontrollers such as Motorola or Intel CPUs and many
others. The SL811HS has 256-bytes of internal RAM which is
used for control registers and data buffer.

The available package types offered are a 28-pin PLCC
(SL811HS) and the lead-free packages are a 28-pin
(SL811HS-JCT) and a 48-pin (SL811HST-AXC) package. All
packages operate at 3.3 VDC. The I/O interface logic is
5V-tolerant.

Block Diagram