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## Introduction
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## Introduction
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The Cute-WR-A7 is the enhanced version of the [CUTE-WR-DP](https://www.ohwr.org/project/cute-wr-dp/wiki) with an Xilinx Artix7 series FPGA. It inherits similar interfaces with Cute-WR-DP: two SFP ports, two SMA/LEMO connectors, FMC form factor with LPC connector that is compatible with VITA-57 standard.
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The Cute-WR-A7 is the enhanced version of the [CUTE-WR-DP](https://www.ohwr.org/project/cute-wr-dp/wiki) with an Xilinx Artix7 series FPGA. It inherits similar interfaces from Cute-WR-DP: two SFP ports, two SMA/LEMO connectors, FMC form factor with LPC connector, etc. thus makes it a ideal replacement of Cute-WR-DP.
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The three function modes of Cute-WR-DP is also possible on Cute-WR-A7:
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The three operation modes of Cute-WR-DP are also supported by Cute-WR-A7:
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1. **Normal mode (Cute-WR-A7-NM)**
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1. **Normal mode (Cute-WR-A7-NM)**
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- In Normal mode, Cute-WR-A7 acts as a normal WR node with one SFP
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- In Normal mode, Cute-WR-A7 acts as a normal WR node with one SFP
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up-link (SFP0) to support cascade topology. Two ports also
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up-link (SFP0) to support cascade topology. Two ports also
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support a simple switch function for normal Ethernet packets.
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support a simple switch function for normal Ethernet packets.
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3. **Parallel mode (Cute-WR-A7-PM)**
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3. **Parallel mode (Cute-WR-A7-PM)**
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- In PM mode both port act as down-link port connect to different
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- In PM mode both ports act as down-link port connect to different
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WRS, provide redundancy to improve the reliability for safety
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WRS, provide redundancy to improve the reliability for safety
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related applications. The current firmware doesn't support this
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related applications. The current firmware doesn't support this
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function.
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function.
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... | @@ -31,8 +31,8 @@ The three function modes of Cute-WR-DP is also possible on Cute-WR-A7: |
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## Hardware Features:
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## Hardware Features:
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- XC7A35T-2CSG325I (Pin compatible with XC7A50T-2CSG325I)
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- XC7A35T-2CSG325I (XC7A50T-2CSG325I compatible)
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- Two WR compatible SFP sockets
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- Two SFP sockets that support WR
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- 128Mb QSPI FLASH (N25Q128A13ESE40F)
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- 128Mb QSPI FLASH (N25Q128A13ESE40F)
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- 512Kb I2C EEPROM (24FC512-I/SM)
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- 512Kb I2C EEPROM (24FC512-I/SM)
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- UART port (TTL level with 3-state buffer)
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- UART port (TTL level with 3-state buffer)
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- [SHINE](https://shine.shanghaitech.edu.cn/)
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- [SHINE](https://shine.shanghaitech.edu.cn/)
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## Evaluation board
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As a FMC mezzanine, the Cute-WR-A7 is not supposed to work alone thus a carrier board is always expected. A evaluation board with FMC socket, power supply, USB-UART converter and LED can simplify the development setup of Cute-WR-A7.
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![image](uploads/511e2fa5c3f5c605eaec61b092cf03fa/image.png)
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**Cute-WR-A7 EVB **
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-----
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-----
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## Contacts
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## Contacts
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