
Preliminary Information
AMD Athlon™ XP Processor Model 10 Data Sheet | 26237C— May 2003 |
Connect State | Figure 6 below and Figure 7 on page 17 show the Northbridge | |||
Diagram | and processor connect state diagrams, respectively. | |||
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| 4/A |
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| 2/A | 1 | |
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Disconnect | Connect | Disconnect | ||
| Pending | Requested | ||
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| 3/C | 3 | |
5/B |
| 8 | 8 | |
Disconnect | Reconnect | Probe | ||
Pending | Pending 2 | |||
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7/D,C
6/C | Probe | 7/D |
| Pending 1 |
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| Condition |
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1 | A disconnect is requested and probes are still pending. |
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2 | A disconnect is requested and no probes are pending. |
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3 | A Connect special cycle from the processor. |
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4 | No probes are pending. |
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5 | PROCRDY is deasserted. |
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6 | A probe needs service. |
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7 | PROCRDY is asserted. |
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| Three SYSCLK periods after CLKFWDRST is deasserted. |
8 | Although reconnected to the system interface, the |
Northbridge must not issue any | |
| commands for a minimum of four SYSCLK periods after |
| deasserting CLKFWDRST. |
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| Action | |
A | Deassert CONNECT eight SYSCLK periods | |
after last SysDC sent. | ||
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BAssert CLKFWDRST.
CAssert CONNECT.
DDeassert CLKFWDRST.
Figure 6. Northbridge Connect State Diagram
16 | Power Management | Chapter 4 |