P R E L I M I N A R Y
BLOCK DIAGRAM
Transceiver Attachment Interface Unit
IRQ
MD[7:0]
Interrupt
Generator
Transceiver Interface
Unit Control
Transceiver
Control
Signals
| TIR0 | TCR0 | TX |
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| TIR... | TCR... |
| RX | ||
| FIFO |
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| TIR31 | TCR31 |
| FIFO | ||
| 8 |
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| 15 | |
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| Bytes |
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| Bytes | |
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TAICE |
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| Empty | MUX |
| C |
Slave |
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Slave |
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Control |
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| R | |
Control | Memory |
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MA[4:0] | Interface |
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| C |
| C |
DRQ[1:0] | Bus I/O |
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| R |
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| and DMA |
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| C | SFD | FDET |
RXCSEL |
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| Detect | Count |
RXCIN |
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| M | MUX |
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| C | U |
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| DPLL |
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| Phylen | ||
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| X |
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| RXD |
| ÷80 |
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| BIAS | TXD |
| ÷40 | M |
| Suppress | |
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| TXC | |||
| ÷5 | U | Sleep |
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RESET | ÷10 | X |
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| ÷20 |
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| RXC |
CLKIN |
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Am79C930 | 5 |