Lattice Semiconductor
Turbo Decoder User’s Guide
Signal Descriptions
Table 2 shows the signal descriptions for the input and output ports of the Turbo Decoder IP core.
Table 2. Turbo Decoder Signal De?nitions
Port Name
clk
rstn
sr
din
dout
iterations
I/O Type
Input
Input
Input
Input
Output
Input
Width
1
1
1
3-6
1
4
Signal Description
System Clock
Active Low Asynchronous Reset
Synchronous Reset
Data Input (soft encoded data from demodulator)
Data Output
Input bus to set the number of decoding iterations. The valid values are from
1 to 15.
blocksiz-
eset(ipcfgset)
inpvalid
rfi
Input
Input
Output
1
1
1
Interleaver initialization. blocksize on input pins can be changed and
accepted when this signal is asserted.
Enables the decoder to read the data at din when asserted.
Active High signal. Indicates that decoder is available to accept data. This
signal is de-asserted one data symbol before buffer is full.
blocksize
Input
13-15
Block size up to 20730 bits can be set depending on the con?guration
selected. Block size ranges:
3GPP: 40-5114
3GPP2: 378-20730
CCSDS: 1784, 3568, 7136, 8920
rfno
rfo
rate
Input
Output
Input
1
1
1 or 2
Asserted to indicate successful reading of encoded data from dout .
When asserted encoded data is ready and available at dout .
Determines the rate of the Turbo Decoder
For 3GPP, size 1 bit, 0-rate 1/3 and 1- rate 1/2
For 3GPP2, size 2 bits, 0-rate 1/2, 1- rate 1/3, 2- rate 1/4 and 3- rate 1/5
For CCSDS, size 2 bits, 0-rate 1/2, 1- rate 1/3, 2- rate 1/4 and 3- rate 1/6
10
相关PDF资料
TVB058SA-L SURGE PROTECTOR 58V DO-214AA
TVB200SA-L SURGE PROTECTOR 200V BREAKOVER
TVB200SC-L SURGE PROTECTOR 200V BREAKOVER
TVB270SB-L SURGE PROTECTOR 270V DO-214AA
TVB270SC-L SURGE PROTECTOR 270V DO-214AA
TVB300SA-L SURGE PROTECTOR 300V DO-214AA
TVB300SB-L SURGE PROTECTOR 300V DO-214AA
TVB300SC-L SURGE PROTECTOR 300V DO-214AA
相关代理商/技术参数
TURBO-DECO-XP-N1 功能描述:编码器、解码器、复用器和解复用器 Turbo Decoder RoHS:否 制造商:Micrel 产品:Multiplexers 逻辑系列:CMOS 位数: 线路数量(输入/输出):2 / 12 传播延迟时间:350 ps, 400 ps 电源电压-最大:2.625 V, 3.6 V 电源电压-最小:2.375 V, 3 V 最大工作温度:+ 85 C 安装风格:SMD/SMT 封装 / 箱体:QFN-44 封装:Tray
TURBO-ENCO-E2-U3 功能描述:编码器、解码器、复用器和解复用器 Turbo Encoder RoHS:否 制造商:Micrel 产品:Multiplexers 逻辑系列:CMOS 位数: 线路数量(输入/输出):2 / 12 传播延迟时间:350 ps, 400 ps 电源电压-最大:2.625 V, 3.6 V 电源电压-最小:2.375 V, 3 V 最大工作温度:+ 85 C 安装风格:SMD/SMT 封装 / 箱体:QFN-44 封装:Tray
TURBO-ENCO-O4-N1 功能描述:编码器、解码器、复用器和解复用器 Turbo Encoder RoHS:否 制造商:Micrel 产品:Multiplexers 逻辑系列:CMOS 位数: 线路数量(输入/输出):2 / 12 传播延迟时间:350 ps, 400 ps 电源电压-最大:2.625 V, 3.6 V 电源电压-最小:2.375 V, 3 V 最大工作温度:+ 85 C 安装风格:SMD/SMT 封装 / 箱体:QFN-44 封装:Tray
TURBO-ENCO-P2-U3 功能描述:编码器、解码器、复用器和解复用器 Turbo Encoder RoHS:否 制造商:Micrel 产品:Multiplexers 逻辑系列:CMOS 位数: 线路数量(输入/输出):2 / 12 传播延迟时间:350 ps, 400 ps 电源电压-最大:2.625 V, 3.6 V 电源电压-最小:2.375 V, 3 V 最大工作温度:+ 85 C 安装风格:SMD/SMT 封装 / 箱体:QFN-44 封装:Tray
TURBO-ENCO-PM-U3 功能描述:开发软件 Turbo Encoder RoHS:否 制造商:Atollic Inc. 产品:Compilers/Debuggers 用于:ARM7, ARM9, Cortex-A, Cortex-M, Cortex-R Processors
TURBO-ENCO-SC-U3 功能描述:编码器、解码器、复用器和解复用器 Turbo Encoder RoHS:否 制造商:Micrel 产品:Multiplexers 逻辑系列:CMOS 位数: 线路数量(输入/输出):2 / 12 传播延迟时间:350 ps, 400 ps 电源电压-最大:2.625 V, 3.6 V 电源电压-最小:2.375 V, 3 V 最大工作温度:+ 85 C 安装风格:SMD/SMT 封装 / 箱体:QFN-44 封装:Tray
TURBO-ENCO-X2-U3 功能描述:开发软件 Turbo Encoder RoHS:否 制造商:Atollic Inc. 产品:Compilers/Debuggers 用于:ARM7, ARM9, Cortex-A, Cortex-M, Cortex-R Processors
TURBO-ENCO-X2-UT3 功能描述:开发软件 TURBO ENCODER RoHS:否 制造商:Atollic Inc. 产品:Compilers/Debuggers 用于:ARM7, ARM9, Cortex-A, Cortex-M, Cortex-R Processors