AMD-762 Advanced Micro Devices, AMD-762 Datasheet - Page 41
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AMD-762
Manufacturer Part Number
AMD-762
Description
System Controller
Manufacturer
Advanced Micro Devices
Datasheet
1.AMD-762.pdf
(122 pages)
- Current page: 41 of 122
- Download datasheet (2Mb)
24416C—December 2001
Chapter 2
5. After all queues are flushed, the AMD-762 system
6. The AMD-762 system controller issues a Stop Grant special
7. The Southbridge detects the Stop Grant special cycle on
8. The AMD-762 system controller samples DCSTOP# active
controller’s power management logic requests the DRAM
controller to place the DRAM in self-refresh mode. The
DRAM controller initiates self-refresh, then acknowledges
to the power management logic.
•
cycle on the PCI bus.
the PCI bus and asserts the DCSTOP# signal.
and gates off most of the internal clock trees. The DDR
DRAM address/command outputs are three-stated. The CKE
pins remain driven Low. The external clock sources and the
AMD-762 system controller PLLs continue to run.
•
Self-refresh mode is initiated by generating an auto-
refresh cycle and deasserting the CKE pins.
Note
CLKOUT[5:0]#) continue to run. This action is required
because the reset signal to the registered DIMMs is
connected to the AMD-762 system controller’s RESET# pin.
The RESET# pin is not asserted in the S1 state, thus the
clocks cannot be removed from the registered DIMMs.
Preliminary Information
Functional Operation
that
the DDR DRAM clocks (CLKOUT[5:0],
AMD-762™ System Controller Data Sheet
29
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