参数资料
| 型号： | IP-VITERBI/SS |
| 厂商： | Altera |
| 文件页数： | 35/50页 |
| 文件大小： | 0K |
| 描述： | IP VITERBI LOW-SPEED |
| 标准包装： | 1 |
| 系列： | * |
| 类型： | MegaCore |
| 功能： | Viterbi 低速编译器 |
| 许可证： | 初始许可证 |
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Chapter 3: Functional Description
The Avalon Streaming Interface
3–9
1
In continuous mode, the state metrics are never reset, which creates a possible
difference if the same block of data is sent several times. The first time, the state
metrics are set such that the state metric for state 0 is 0, and all others infinity, based
on the assumption that the first state is always state 0. For any future blocks, the state
metrics contains whatever they had when the previous block ended.
The Avalon Streaming Interface
The Avalon ? Streaming (Avalon-ST) interface defines a standard, flexible, and
modular protocol for data transfers from a source interface to a sink interface and
simplifies the process of controlling the flow of data in a datapath. The Avalon-ST
interface signals can describe traditional streaming interfaces supporting a single
stream of data without knowledge of channels or packet boundaries. Such interfaces
typically contain data, ready, and valid signals. The Avalon-ST interface can also
support more complex protocols for burst and packet transfers with packets
interleaved across multiple channels. The Avalon-ST interface inherently
synchronizes multi-channel designs, which allows you to achieve efficient, time-
multiplexed implementations without having to implement complex control logic.
The Avalon-ST interface supports backpressure, which is a flow control mechanism,
where a sink can signal to a source to stop sending data. The sink typically uses
backpressure to stop the flow of data when its FIFO buffers are full or when there is
congestion on its output. When designing a datapath, which includes the Viterbi
MegaCore function, you may not need backpressure if you know the downstream
components can always receive data. You may achieve a higher clock rate by driving
the source ready signal source_rdy of the Viterbi high, and not connecting the sink
ready signal sink_rdy .
f For more information about the Avalon-ST interface, refer to the Avalon Streaming
Interface Specifications .
Parameters
options, which can be set in IP Toolbench (refer to “Parameterize the MegaCore
Function” on page 2–3 ):
■
■
■
■
Architecture Tab
Parameters Tab
Code Sets Tab
Test Data Tab
November 2013
Altera Corporation
Viterbi Compiler
User Guide
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相关代理商/技术参数 |
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| IPW 2819 | 制造商:FIBOX 功能描述:INSTRUMENT PROTECTION WINDOW 11INX7.5IN 制造商:FIBOX 功能描述:INSTRUMENT PROTECTION WINDOW, 11INX7.5IN 制造商:FIBOX 功能描述:INSTRUMENT PROTECTION WINDOW, 11INX7.5IN; For Use With:Front Panel Mounted Meters; Enclosure Material:-; IP Rating:(Not Available); Highest NEMA Rating:4X; External Height - Imperial:11"; External Width - Imperial:7.5"; NEMA Type:4X ;RoHS Compliant: Yes |
| IPW 2819-G | 制造商:FIBOX 功能描述:INSTRUMENT PROTECTION WINDOW 11INX7.5IN 制造商:FIBOX 功能描述:INSTRUMENT PROTECTION WINDOW, 11INX7.5IN; For Use With:Front Panel Mounted Meters; Enclosure Material:-; IP Rating:(Not Available); Highest NEMA Rating:4X; External Height - Imperial:11"; External Width - Imperial:7.5"; NEMA Type:4X ;RoHS Compliant: Yes |
| IPW 2828 | 制造商:FIBOX 功能描述:INSTRUMENT PROTECTION WINDOW 11INX11IN 制造商:FIBOX 功能描述:INSTRUMENT PROTECTION WINDOW, 11INX11IN; For Use With:Front Panel Mounted Meters; Enclosure Material:-; IP Rating:(Not Available); Highest NEMA Rating:4X; External Height - Imperial:11"; External Width - Imperial:11"; NEMA Type:4X ;RoHS Compliant: Yes |
| IPW 3819 | 制造商:FIBOX 功能描述:Inspection Window 制造商:FIBOX 功能描述:INSTRUMENT PROTECTION WINDOW, 15INX7.5IN, For Use With:Front Panel Mounted Meter 制造商:FIBOX 功能描述:INSTRUMENT PROTECTION WINDOW, 15INX7.5IN, For Use With:Front Panel Mounted Meters, Enclosure Material:-, IP Rating:-, NEMA Rating:4X, External Height - Imperial:15", External Width - Imperial:7.5", External Width - Metric:191mm , RoHS Compliant: Yes |
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