參數(shù)資料
型號: KL5KUSB121_L
廠商: Electronic Theatre Controls, Inc.
英文描述: USB to 10/100 Ethernet Controller
中文描述: USB接口10/100以太網(wǎng)控制器
文件頁數(shù): 5/17頁
文件大小: 310K
代理商: KL5KUSB121_L
KL5KUSB121
USB to 10/100 Ethernet Controller
Kawasaki LSI
2570 North First Street
Suite 301
San Jose, CA 95131
Tel: (408) 570-0555
Fax: (408) 570-0567
www.klsi.com
5
Ver. 1.1
PRELIMINARY
Pin #
LQFP
98
99
100
I/O
Pin Name
Description
IN/OUT
IN/OUT
IN
XD_14
XD_15
VDD
External Data Pins
External Data Pins
VDD
Function Description
16 Bit Processor
The integrated 16 bit processor serves as a micro controller for USB peripherals. The
processor can execute approximately five million instructions per second. With this
processing power it allows the design of intelligent peripherals that can process data prior
to passing it on to the host PC, thus improving overall performance of the system. The
masked ROM (4K X 16) in the KL5KUSB121 or external memory contains a specialized
instruction set that has been designed for highly efficient coding of processing algorithms
and USB transaction processing.
The 16-bit processor is designed for efficient data execution by having direct access to
the RAM Buffer, external memory, I/O interfaces, and all the control and status registers.
The divide/multiply feature expands the capability of USB peripherals.
The processor supports prioritized vectored hardware interrupts. In addition, as many as
240 software interrupt vectors are available.
The processor provides six addressing modes, supporting memory-to-memory, memory-
to-register,
register-to-register,
immediate-to-register
operations. Register, direct, immediate, indirect, and indirect indexed addressing modes
are supported. In addition, there is an auto-increment mode in which a register, used as
an address pointer is automatically incremented after each use, making repetitive
operations more efficient both from a programming and a performance standpoint.
or
immediate-to-memory
The processor features a full set of program control, logical, and integer arithmetic
instructions. All instructions are sixteen bits wide, although some instructions require
operands, which may occupy another one or two words. Several special “ short
immediate” instructions are available, so that certain frequently used operations with
small constant operand will fit into a 16-bit instruction.
RAM Buffer
The USB controller contains a 3K byte (1.5K X 16) internal buffer memory. The memory
is used to buffer data and USB packets and accessed by the 16 Bit processor and the
SIE. USB transactions are automatically routed to the memory buffer. The 16-bit
processor has the ability to set up pointers and block sizes in buffer memory for USB
transactions. Data is read from the interface and is processed and packetized by the 16-
bit I/O processor.
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