GRSPW Datasheet, PDF (1/48 Pages) Actel Corporation – SpaceWire CODEC with RMAP GRSPW / GRSPW-FT

GAISLER
SpaceWire CODEC with RMAP
GRSPW / GRSPW-FT
CompanionCore Data Sheet
Features
Description
• Full implementation of SpaceWire standard
ECSS-E-ST-50-12C
• Protocol ID extension ECSS-E-ST-50-11C
• RMAP protocol ECSS-E-ST-50-11C
• AMBA AHB back-end with DMA
• Descriptor-based autonomous multi-packet
transfer
• SEU protection and fault-tolerance
• Low area and high transfer frequency
• 100 Mbit/s data transfer on Actel RTAX
• Support for Fusion, IGLOO, RT-ProASIC3/E,
Axcelerator and RTAX-S Product Families
The GRSPW core implements a SpaceWire
Codec with RMAP support and AMBA^TM host
interface. The core implements the SpaceWire
standard with the protocol identification
extension and RMAP protocol draft. Receive and
transmit data is autonomously transferred
between the SpaceWire Codec and the AMBA
AHB bus using DMA transfers.
Through the use of receive and transmit
descriptors, multiple SpaceWire packets can be
received and transmitted without processor
involvement. The GRSPW control registers are
accessed through an APB interface.
TxClk
D
S
Transmitter
Tx clock domain
Rx clock domain
LinkInterface
FSM
D
Receiver
RxClock
RxClock
S Recovery
AHB clock domain
Send
FSM
Transmitter
FIFO
RMAP
Transmitter
Transmitter
DMA Engine
Receiver
DMA Engine
AHB Master
Interface
RMAP
Receiver
Receiver
AHB FIFO
Registers
APB
Interface
N-Char
FIFO
Data
Parallelization
Applications
The fault tolerant design of the SpaceWire core in
combination with the radiation tolerant Actel
FPGA gives total immunity to radiation effects
and makes it well suited for space applications.
Copyright Aeroflex Gaisler AB
December 2008, Version 1.0.2