AMD-762 Advanced Micro Devices, AMD-762 Datasheet - Page 68
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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: 68 of 122
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AMD-762™ System Controller Data Sheet
Figure 14.
4.5.2
Table 19.
Table 20.
56
t
t
*
t
t
*
1
2
This table contains preliminary information, which is subject to change.
1
2
This table contains preliminary information, which is subject to change.
Symbol
Symbol
SYSCLK
AGPCLK
Frequency
CLKOUTH/L[5:0] High Time
CLKOUTH/L[5:0] Low Time
CLKOUTH/L[5:0] Fall Time
CLKOUTH/L[5:0] Rise Time
CLKOUTH/L[5:0] Period Stability
CLKOUTH/L[5:0] Skew
Frequency
CLKOUTH/L[5:0] High Time
CLKOUTH/L[5:0] Low Time
CLKOUTH/L[5:0] Fall Time
CLKOUTH/L[5:0] Rise Time
CLKOUTH/L[5:0] Period Stability
CLKOUTH/L[5:0] Skew
Clock Skew Requirements
DDR Clock Switching Characteristics for 100-MHz DDR Operation
DDR Clock Switching Characteristics for 133-MHz DDR Operation
DDR Interface Timing
Parameter Description
Parameter Description
t
Skew
Ta b l e 19 and Ta ble 20 show t h e DDR SDRAM inte r fa ce
timings. Figure 15 on page 57 shows DDR clock specifications.
The AMD-762 system controller’s DDR DRAM interface complies
to JEDEC specifications for 100/133-MHz device timing.
1.15 V
t
Skew
Preliminary Information
0.4 (VDD_PCI)
Electrical Data
3.625 ns
3.625 ns
4.75 ns
4.75 ns
0.86 ns
0.86 ns
0.86 ns
0.86 ns
Min
Min
Preliminary Data
Preliminary Data
0
0
100 MHz
133 MHz
1.30 ns
1.30 ns
0.12 ns
1.30 ns
1.30 ns
0.12 ns
Max
Max
2%
2%
Figure
Figure
15
15
15
15
Drive strength:
P = 3, N = 2;
P
Relative to all other
CLKOUTH/L pairs
Drive strength:
P = 3, N = 2;
P
Relative to all other
CLKOUTH/L pairs
SLEW
SLEW
24416C—December 2001
Comments
Comments
= 5, N
= 5, N
SLEW
SLEW
Chapter 4
= 5
= 5
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