Sink Core

R

When a DIP-4 error occurs on a payload control word (start of burst for the next packet), the Sink core stores a SnkFFPayloadDIP4 flag. If the payload control word was also the end-of-burst control word for the previous packet, then SnkFFDIP4Err would also be asserted for the previous packet. Since the OIF SPI-4.2specification does not distinguish between these two DIP-4 errors, the Sink core will tag each terminated packet with a DIP- 4 error on SnkFFDIP4Err, and each started packet with a DIP-4 error on SnkFFPayloadDIP4.

This is illustrated in Figure 4-19where packet 1 is flagged with a SnkFFDIP4Err and packet 2 is flagged with SnkFFPayloadDIP4. Note that both DIP-4 errors are asserted at the end of the burst or packet.

SPI-4.2 Interface

IDLE

CH 4

DATA

DATA

DATA

CH4

IDLE

SOP

EOP

 

 

 

 

 

DIP-4 Error Calculated

User Interface

Addr4

Addr4

Addr4

 

EOP

---

SOP

--

Data

Data

Data

SnkFFDIP4Err

 

Figure 4-18:Example of Error Flag SnkFFDIP4Err

SPI-4.2 Interface

 

 

 

 

 

CH 0

 

 

 

 

 

 

IDLE

SOP

DATA

DATA

DATA

EOP

DATA

DATA

DATA

DATA

EOP

IDLE

CH 1

CH 1

CH 1

 

 

 

 

 

 

 

 

 

 

 

 

Packet 1

SOP

 

Packet 2

 

 

 

 

 

 

 

SnkFFDIP4Err

 

 

SnkFFPayloadDIP4

 

 

 

DIP-4 Error

User Interface

Addr0

Addr0

Addr0

Addr1

Addr1

Addr1

Addr1

SOP

--

EOP

SOP

--

--

EOP

Data

Data

SnkFFDIP4Err

Data

Data

Data

SnkFFPayloadDIP4

Figure 4-19:Example of Error Flag SnkFFDIP4Err and SnkFFPayloadDIP4

SPI-4.2 Lite v4.3 User Guide

www.xilinx.com

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UG181 June 27, 2008

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Image 75
Xilinx UG181 manual 18Example of Error Flag SnkFFDIP4Err

UG181 specifications

Xilinx UG181 refers to the User Guide for the Xilinx 7 Series FPGAs, which offers a comprehensive overview of the architecture, capabilities, and features of these powerful field-programmable gate arrays (FPGAs). Designed to cater to a wide range of applications, Xilinx 7 Series FPGAs are widely adopted in industries such as telecommunications, automotive, aerospace, and consumer electronics.

One of the main features of the Xilinx 7 Series FPGAs is their use of advanced 28nm technology, which enables them to achieve high performance while maintaining low power consumption. This fine process technology not only ensures better power efficiency but also allows for increased logic density. The 7 Series includes several families, such as Artix-7, Kintex-7, and Virtex-7, each tailored for specific application demands ranging from cost-sensitive solutions to high-performance data processing.

Xilinx 7 Series FPGAs also incorporate a rich set of programmable logic resources. This includes Look-Up Tables (LUTs), Flip-Flops, and Digital Signal Processing (DSP) slices that have been optimized for various arithmetic functions. With several thousands of logic cells available, designers can implement complex algorithms and systems directly in hardware for improved performance over traditional software solutions.

In addition to their logic capabilities, Xilinx 7 Series FPGAs feature an array of high-speed serial communication interfaces. These include support for technologies like PCI Express, Gigabit Ethernet, and Serial RapidIO, which facilitate efficient data transfer and integration into enterprise-level systems. The presence of high-speed transceivers also makes them ideal for applications that require fast data handling like video processing or high-frequency trading.

Furthermore, these FPGAs offer extensive memory options, including support for a wide range of external memory interfaces. This versatility allows for the integration of high-bandwidth memory solutions, which is essential for performance-intensive applications. With the introduction of the Memory Controller IP, users can easily connect various memory types, ensuring flexibility in system design.

Finally, Xilinx has made significant strides in development tools for 7 Series FPGAs, providing a robust ecosystem for design engineers. With design suites such as Vivado and SDK, users benefit from a comprehensive platform for deciding, simulating, and implementing designs efficiently. The combination of advanced hardware capabilities and powerful software tools solidifies the position of Xilinx 7 Series FPGAs as a preferred choice for custom digital hardware design across various industries.