OPERATION
4.3 GT200 Block PMC Diagram
INT_BUF
NET_STAT
RX_FIFO
RC_CTRL
RW_FIFO
RX_CTRL
MEM_CTRL
RT_FIFO
TX_CTRL
RAM
TXN_FIFO
TXM_FIFO
XCVR
XCVR
P
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Figure 4-4 GT200 PMC Block Diagram
4.3.1 Network Logic
XVCR.....................SFP 2.5 Gbps fiber optic transceiver.
RX_CTRL ..............Receive control logic. Decodes receive framing protocol
RT_FIFO ................Retransmit FIFO. Buffers retransmitted link data
TXN_FIFO .............Transmit to Network FIFO. Buffers network transmit data
TX_CTRL ..............Transmit control logic. Handles transmit framing protocol
4.3.2 Host Logic
INT_BUF ...............Network to Host Interrupt Queue. Buffers received network
interrupts
NET_STAT ............Network Status Look Up Table
RX_FIFO................Receive FIFO. Buffers received data
MEM_CTRL ..........Memory Controller
RAM.......................Memory. 125 MHz 32-bit DDR SDRAM
TXM_FIFO ............Transmit to Memory FIFO. Buffers transmit data
RW_FIFO...............Read/Write FIFO
RC_CTRL ..............Read Cache Controller
Copyright 2005
4-7
GT200 VME Hardware Reference
Summary of Contents for GT200 VME
Page 1: ...GT200 VME Hardware Reference Document No G T MR G1VME6U A 0 A2 ...
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Page 41: ...A A SPECIFICATIONS APPENDIX A SPECIFICATIONS ...
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Page 45: ...B ORDERING APPENDIX B ORDERING INFORMATION ...
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Page 49: ...GLOSSARY ...
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Page 55: ...INDEX ...
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