C.8 Clear Interrupt — BASE+24H
Table C-7 PCI-1784 Register for clock control
Base Addr. | 15 | 14 | 13 | 12 | 11 | 10 | 9 | 8 | 7 |
| 6 | 5 | 4 | 3 | 2 | 1 | 0 | |
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31 | 30 | 29 | 28 | 27 | 26 | 25 | 24 | 23 |
| 22 | 21 | 20 | 19 | 18 | 17 | 16 | ||
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| Clock Control |
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24H | W |
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| SC1 | SC0 | ||
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| TB2 | TB1 | TB0 | DV7 |
| DV6 | DV5 | DV4 | DV3 | DV2 | DV1 | DV0 |
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SC1 ~ SC0 | Sampling clock select | ||
| 00 | 8 | MHz sampling clock |
| 01 | 4 | MHz sampling clock |
| 10 | 2 | MHz sampling clock |
| 11 | 1 | MHz sampling clock |
DV7 ~ DV0 | Timer divider control | ||
TB2 ~ TB0 | Timer time base select | ||
| 000 | 50 KHz time base | |
| 001 | 5 | KHz time base |
| 010 | 500 Hz time base | |
| 011 | 50 Hz time base | |
| 100 | 5 | Hz time base |
| 101 | N/A | |
| 110 | N/A | |
| 111 | N/A |
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