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| SRIO Functional Description |
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| Table 10. Bits of SERDES_CFGTXn_CNTL Registers (continued) | ||
Bit | Field | Value | Description |
|
4:2 | BUS- |
| Bus width. Selects the width of the parallel interface (10 or 8 bit). | |
| WIDTH | 000 | ||
|
| |||
|
| 001 | ||
|
|
| TDn[1:0] are ignored. |
|
|
| 01x | Reserved |
|
|
| 1xx | Reserved |
|
1 | Reserved |
| Reserved |
|
0 | ENTX |
| Enable transmitter. Enables this transmitter when high. | |
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|
| Table 11. SWING Bits |
|
CFGTX[11:9] |
| Amplitude (mVdfpp) |
| |
000 |
|
| 125 |
|
001 |
|
| 250 |
|
010 |
|
| 500 |
|
011 |
|
| 625 |
|
100 |
|
| 750 |
|
101 |
|
| 1000 |
|
110 |
|
| 1125 |
|
111 |
|
| 1250 |
|
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| Table 12. DE Bits |
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| CFGTX[15:12] | Amplitude Reduction |
| |
|
|
| % | dB |
| 0000 |
| 0 | 0 |
| 0001 |
| 4.76 | |
| 0010 |
| 9.52 | |
| 0011 |
| 14.28 | |
| 0100 |
| 19.04 | |
| 0101 |
| 23.8 | |
| 0110 |
| 28.56 | |
| 0111 |
| 33.32 | |
| 1000 |
| 38.08 | |
| 1001 |
| 42.85 | |
| 1010 |
| 47.61 | |
| 1011 |
| 52.38 | |
| 1100 |
| 57.14 | |
| 1101 |
| 61.9 | |
| 1110 |
| 66.66 | |
| 1111 |
| 71.42 |
SPRU976 | Serial RapidIO (SRIO) | 31 |
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