参数资料
| 型号： | COREFIR-RM |
| 厂商： | Microsemi SoC |
| 文件页数： | 21/67页 |
| 文件大小： | 0K |
| 描述： | IP MODULE COREFIR |
| 标准包装： | 1 |
| 系列： | * |
第1页第2页第3页第4页第5页第6页第7页第8页第9页第10页第11页第12页第13页第14页第15页第16页第17页第18页第19页第20页当前第21页第22页第23页第24页第25页第26页第27页第28页第29页第30页第31页第32页第33页第34页第35页第36页第37页第38页第39页第40页第41页第42页第43页第44页第45页第46页第47页第48页第49页第50页第51页第52页第53页第54页第55页第56页第57页第58页第59页第60页第61页第62页第63页第64页第65页第66页第67页
Fully Enumerated Filter
Clock
DATAI_VALID
DATAO_VALID
Pipeline
Latency
Figure 19 · Pipeline Latency
The flag is not of particular use, when the valid data to be filtered are coming at every clock period
Clock
DATAI_VALID
DATAO_VALID
Pipeline
Latency
Figure 20 · Pipeline Latency with No Breaks in the Input Data
Transition Latency
The FIR filter starts producing valid output samples after its delay line is filled with input data samples. Until
then, there is not enough data to be entered in EQ 1 on page 5 . In other words, after reset, when the filter
delay line becomes empty, the first valid output will be available only when the filter receives N data
samples. After that, every subsequent input sample will cause the filter to generate a fresh output sample.
The reset is not the only event causing the transitional delay. The same applies to the filter coefficient
modification or update that takes place on the COEF_ON signal.
Figure 21 shows an example of a 20-tap transposed filter. This filter must collect 20 input samples to satisfy
EQ 1 on page 5 . The transition latency depends on the number of taps (TAPS), filter architecture, and
symmetry.
Event
clock
DATAI_VALID
Valid input count
1
2
3
4
5
6
7
8
...
16
17
18
19
20
Transition latency
Figure 21 · Transition Latency of a 20-Tap Filter
CoreFIR can be configured to generate the DATAO_VALID flag that accounts for the pipeline and transition
latencies. To do so, the configuration parameter VALID_O must be set.
22
CoreFIR v8.5 Handbook
相关PDF资料 |
PDF描述 |
|---|---|
| COREPCIF-RM | IP MODULE COREPCIF |
| COREU1LL-AR | IP MODULE COREU1LL |
| COREU1PHY-AR | IP MODULE COREU1PHY |
| CORR-8BIT-XM-UT2 | SITE LICENSE IP CORRELATOR XP |
| CP2-GSA-L | CONN SHIELD LOWER TYPE A 22 |
相关代理商/技术参数 |
参数描述 |
|---|---|
| COREFIR-UR | 制造商:ACTEL 制造商全称:Actel Corporation 功能描述:CoreFIR Finite Impulse Response (FIR) Filter Generator |
| COREFIR-XX | 制造商:ACTEL 制造商全称:Actel Corporation 功能描述:CoreFIR Finite Impulse Response (FIR) Filter Generator |
| COREMP7 | 制造商:ACTEL 制造商全称:Actel Corporation 功能描述:CoreMP7 |
| COREPCI-AN | 制造商:ACTEL 制造商全称:Actel Corporation 功能描述:CorePCI v5.41 |
| COREPCI-AR | 制造商:ACTEL 制造商全称:Actel Corporation 功能描述:CorePCI v5.41 |
发布紧急采购，3分钟左右您将得到回复。