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參數(shù)資料
| 型號： | HSP50214AVC |
| 廠商： | HARRIS SEMICONDUCTOR |
| 元件分類： | 通信及網(wǎng)絡(luò) |
| 英文描述： | Programmable Downconverter |
| 中文描述： | SPECIALTY TELECOM CIRCUIT, PQFP120 |
| 文件頁數(shù)： | 54/60頁 |
| 文件大?。?/td> | 467K |
| 代理商： | HSP50214AVC |
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54
CONTROL WORD 25: COUNTER AND ACCUMULATOR RESET (SYNCHRONIZED TO BOTH CLKIN AND PROCCLK)
BIT
POSITION
FUNCTION
DESCRIPTION
N/A
Counter and
Accumulator Reset
A write to this address initializes the counters and accumulators for testing. Items that are reset
are:
Carrier NCO.
1. Loads phase offset <9:0> into register to be used for adding to accumulator.
2. Enables feedback on the accumulator.
CIC Filter
1. Resets the decimation counter.
2. Clears enables to CIC.
3. Clears accumulators in CIC.
4. Clears enable leaving CIC.
Halfband Filters
1. Resets compute counter in Halfband control.
2. Resets read address for all Halfband Filters.
3. Resets write address for all Halfband Filters.
4. Clears input available strobe.
5. Resets Halfband control logic.
255 Tap FIR
1. Resets FIR read and write address pointers.
2. Zero’s coefficient read address.
AGC Loop
1. Clears accumulator in loop filter.
Re-Sampler and Interpolation Halfband Filters.
1. Resets counters for Halfband addresses for writing.
2. Resets output enable.
3. Reset controller for Re-Sampler.
Timing NCO
1. Initializes counters for inserting extra pulses when interpolating halfbands are enabled. In
the HSP50214A, a configuration control word bit determines if a Timing NCO reset is ex-
ecuted. If Control Word 27, Bit 20 is set to a logic one, a reset will clear the feedback in the
timing NCO phase accumulator. If Control Word 27, Bit 20 is zero, a reset will not clear the
timing NCO phase accumulator feedback, which is how the HSP50214 operated.
Discriminator
1. Resets read and write address pointers.
2. Zero’s coefficient read address.
Cartesian to Polar Coordinate Counter
1. Resets Cordic counters (stops current computation).
FIFO Control
1. Resets decoder for controlling FIFO.
2. Resets write address for FIFO.
3. Clears RD and INTRRPT.
4. Resets “depth” and “full” flags.
5. Sets the empty flag.
6. Sets the read address to “7”, write address to “0”.
Snapshot Control
1. Zeros the group number.
2. Load interval counter.
3. Resets write address and read address for FIFO.
Output Serial Control
1. Reloads shift counter.
2. Reloads “Number of Words” counter.
3. Reloads counter for sync (for early or late).
4. Reloads counter for dividing down SERCLK.
5. In the HSP50214A, the Control Word 25 reset signal is designed such that the front end
reset is 10 CLKIN periods wide and the back end reset is 10 PROCCLK periods wide. This
guarantees that no enables will be caught in the pipelines.
HSP50214A
相關(guān)PDF資料 |
PDF描述 |
|---|---|
| HSP50214AVI | Programmable Downconverter |
| HSP50214B | Programmable Downconverter |
| HSP50214BVC | Programmable Downconverter |
| HSP50214BVI | Programmable Downconverter |
| HT84 | ADSL Coupling Transformers |
相關(guān)代理商/技術(shù)參數(shù) |
參數(shù)描述 |
|---|---|
| HSP50214AVI | 制造商:INTERSIL 制造商全稱:Intersil Corporation 功能描述:Programmable Downconverter |
| HSP50214B | 制造商:INTERSIL 制造商全稱:Intersil Corporation 功能描述:Programmable Downconverter |
| HSP50214B_07 | 制造商:INTERSIL 制造商全稱:Intersil Corporation 功能描述:Programmable Downconverter |
| HSP50214BVC | 功能描述:上下轉(zhuǎn)換器 120L MQFP COMTEMP 14-BIT PROGRAMMABLE DOWNCONVERTER 65MSPS RoHS:否 制造商:Texas Instruments 產(chǎn)品:Down Converters 射頻:52 MHz to 78 MHz 中頻:300 MHz LO頻率: 功率增益: P1dB: 工作電源電壓:1.8 V, 3.3 V 工作電源電流:120 mA 最大功率耗散:1 W 最大工作溫度:+ 85 C 安裝風(fēng)格:SMD/SMT 封裝 / 箱體:PQFP-128 |
| HSP50214BVCZ | 功能描述:上下轉(zhuǎn)換器 120L MQFP COMTEMP 14-BIT PROG DWNCNVRT RoHS:否 制造商:Texas Instruments 產(chǎn)品:Down Converters 射頻:52 MHz to 78 MHz 中頻:300 MHz LO頻率: 功率增益: P1dB: 工作電源電壓:1.8 V, 3.3 V 工作電源電流:120 mA 最大功率耗散:1 W 最大工作溫度:+ 85 C 安裝風(fēng)格:SMD/SMT 封裝 / 箱體:PQFP-128 |
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