参数资料
| 型号： | COREFIR-RM |
| 厂商： | Microsemi SoC |
| 文件页数： | 34/67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页当前第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
Folded Filter Implementation Details
CLK
DATAI_VALID
DATAI
SAMPLE_ID
Figure 32 · SAMPLE_ID Timing Diagram
The ID must be generated by a regular incremental binary counter. The bit width of the ID is configurable.
With the 5-bit ID, consider the example in the Input Rate Limitations section on page 32 . Figure 33 shows
the SAMPLE_ID attached to the input data and the output FIRO_ID. The IDs are shown in decimal format
for convenience. The output sample with the ID 16 is the filtered result produced by the input samples from
16 to 27; the output ID 17 is the filtered input sequence from 17 to 28, etc. Due to the limited bit width, the ID
rolls over to 0 when the ID counter overflows. The FIRO_ID 22 marks the filtered output of the input samples
DATAI_VALID
SAMPLE_ID
DATAO_VALID
FIRO
FIRO_ID
Filtered data
samples from
16 to 27
Filtered data
samples from
17 to 28
Filtered data
samples from
18 to 29
Filtered data
samples from 22
to 31 to 0 to 1
Filtered data
samples from 23
to 31 to 0 to 2
Filtered data
samples from 24
to 31 to 0 to 3
Figure 33 · Numeric ID Use Example
Warm-Up Time
In addition to initial coefficient copying time described in the “ Coefficient Modes ” section on page 30 , the
filter takes certain warm-up time. Theoretically, an FIR filter starts producing valid output samples after it
collects enough data to be entered in EQ 1 on page 5, N data samples. After initial reset when the filter
delay line is empty, the first valid output can possibly be available only after the filter receives N data
samples. CoreFIR requires PHY_TAPS more input samples to start generating valid results. It also discards
the first result as it is not accurate. The core deasserts the DATAO_VALID signal while initial inaccurate
results are generated.
After the warm-up, every subsequent PHY_TAPS input samples causes the filter to generate PHY_TAPS
valid output samples.
CoreFIR v8.5 Handbook
35
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。