8201, 8202, 8203, 8204 Acceleration Processor Data Sheet, DS-0157-05
Page 102
Exar Confidential
5. If dual command pointer ring mode is enabled, the host should update the
appropriate command write pointer of Command Pointer Ring 0 or Command
Pointer Ring 1.
6. As long as the read and the write pointer registers for Command Pointer Ring 0 or
Command Pointer Ring 1 are not equal, the 820x recognizes that commands are
available to fetch from host memory. A command read request will be sent by the
820x Read Request Controller which will alternate sending the command to either
Command Pointer Ring 0 or Command Pointer Ring 1. In this example, the
command is sent to Command Pointer Ring 0.
7. The 820x reads the source descriptor to determine the location of the source data
and the operation. The Compression, Decompression, Hash, and Pad engines
process the data according to the control fields in the command structure.
8. The 820x writes the slice hash values and file chaining hash value to the first
destination buffer if the command has Hash related operation.
9. After the Compression, Decompression, Hash, and Pad engines complete
processing the data, the 820x writes the result data to the host destination buffers
whose location is defined in the destination descriptor.
10. After the 820x writes the result data to host memory, it updates the appropriate
command structure Result Ring. Because the 820x has two channels (each channel
includes one group of Compression, Decompression, Hash, and Pad engines) which
process commands in parallel, and the commands may have different sizes, it is
very probable for commands to complete out of order. The Result Ring is used to
keep track of the finished commands.
相关PDF资料
PIC16F882-I/SS IC PIC MCU FLASH 2KX14 28SSOP
2-84984-8 CONN FFC 28POS 1.00MM VERT PCB
2-84984-7 CONN FFC 27POS 1.00MM VERT PCB
2-84984-3 CONN FFC 23POS 1.00MM VERT PCB
2-84984-2 CONN FFC 22POS 1.00MM VERT PCB
22-15-3173 CONN FFC/FPC 17POS .100 RT ANG
2-84984-1 CONN FFC 21POS 1.00MM VERT PCB
1-84984-8 CONN FFC 18POS 1.00MM VERT PCB
相关代理商/技术参数
PIC16F1847-I/SO 功能描述:8位微控制器 -MCU 14K FL 1KB RAM 32MHz 16I/0 Enhance Mid RoHS:否 制造商:Silicon Labs 核心:8051 处理器系列:C8051F39x 数据总线宽度:8 bit 最大时钟频率:50 MHz 程序存储器大小:16 KB 数据 RAM 大小:1 KB 片上 ADC:Yes 工作电源电压:1.8 V to 3.6 V 工作温度范围:- 40 C to + 105 C 封装 / 箱体:QFN-20 安装风格:SMD/SMT
PIC16F1847-I/SS 功能描述:8位微控制器 -MCU 14K FL 1KB RAM 32MHz 16I/0 Enhance Mid RoHS:否 制造商:Silicon Labs 核心:8051 处理器系列:C8051F39x 数据总线宽度:8 bit 最大时钟频率:50 MHz 程序存储器大小:16 KB 数据 RAM 大小:1 KB 片上 ADC:Yes 工作电源电压:1.8 V to 3.6 V 工作温度范围:- 40 C to + 105 C 封装 / 箱体:QFN-20 安装风格:SMD/SMT
PIC16F1847T-I/ML 功能描述:8位微控制器 -MCU 14K FL 1KB RAM 32MHz 16I/0 Enhance Mid RoHS:否 制造商:Silicon Labs 核心:8051 处理器系列:C8051F39x 数据总线宽度:8 bit 最大时钟频率:50 MHz 程序存储器大小:16 KB 数据 RAM 大小:1 KB 片上 ADC:Yes 工作电源电压:1.8 V to 3.6 V 工作温度范围:- 40 C to + 105 C 封装 / 箱体:QFN-20 安装风格:SMD/SMT
PIC16F1847T-I/MV 功能描述:8位微控制器 -MCU 14KB FL 1KBRAM 32MHz 16I/0 Enh Mid RoHS:否 制造商:Silicon Labs 核心:8051 处理器系列:C8051F39x 数据总线宽度:8 bit 最大时钟频率:50 MHz 程序存储器大小:16 KB 数据 RAM 大小:1 KB 片上 ADC:Yes 工作电源电压:1.8 V to 3.6 V 工作温度范围:- 40 C to + 105 C 封装 / 箱体:QFN-20 安装风格:SMD/SMT
PIC16F1847T-I/SO 功能描述:8位微控制器 -MCU 14K FL 1KB RAM 32MHz 16I/0 Enhance Mid RoHS:否 制造商:Silicon Labs 核心:8051 处理器系列:C8051F39x 数据总线宽度:8 bit 最大时钟频率:50 MHz 程序存储器大小:16 KB 数据 RAM 大小:1 KB 片上 ADC:Yes 工作电源电压:1.8 V to 3.6 V 工作温度范围:- 40 C to + 105 C 封装 / 箱体:QFN-20 安装风格:SMD/SMT
PIC16F1847T-I/SS 功能描述:8位微控制器 -MCU 14K FL 1KB RAM 32MHz 16I/0 Enhance Mid RoHS:否 制造商:Silicon Labs 核心:8051 处理器系列:C8051F39x 数据总线宽度:8 bit 最大时钟频率:50 MHz 程序存储器大小:16 KB 数据 RAM 大小:1 KB 片上 ADC:Yes 工作电源电压:1.8 V to 3.6 V 工作温度范围:- 40 C to + 105 C 封装 / 箱体:QFN-20 安装风格:SMD/SMT
PIC16F1933-E/ML 功能描述:8位微控制器 -MCU 7KB Flash 1.8-5.5V 256B RAM 256B EEPROM RoHS:否 制造商:Silicon Labs 核心:8051 处理器系列:C8051F39x 数据总线宽度:8 bit 最大时钟频率:50 MHz 程序存储器大小:16 KB 数据 RAM 大小:1 KB 片上 ADC:Yes 工作电源电压:1.8 V to 3.6 V 工作温度范围:- 40 C to + 105 C 封装 / 箱体:QFN-20 安装风格:SMD/SMT
PIC16F1933-E/MV 功能描述:8位微控制器 -MCU 7KB Flash 256B RAM LCD 1.8-5.5V RoHS:否 制造商:Silicon Labs 核心:8051 处理器系列:C8051F39x 数据总线宽度:8 bit 最大时钟频率:50 MHz 程序存储器大小:16 KB 数据 RAM 大小:1 KB 片上 ADC:Yes 工作电源电压:1.8 V to 3.6 V 工作温度范围:- 40 C to + 105 C 封装 / 箱体:QFN-20 安装风格:SMD/SMT