sc3200 Advanced Micro Devices, sc3200 Datasheet - Page 382

• Manufacturer Part Number: sc3200
• Description: Geode-tm Sc3200 Processor
• Manufacturer: Advanced Micro Devices

Note 1. Control output includes all the following signals: RASA#, CASA#, WEA#, CKEA, DQM[7:0], and CS[1:0]#.
Note 2. Use the Min/Max equations [value+(x * y)] to calculate the actual output value.
382
Symbol
t
t
t
t
t
t
t
t
t
t
1
2
3
4
5
6
7
9
10
11
Load = 50 pF, V
x is the shift value which is applied to the SHFTSDCLK field, and y is 0.45 the core clock period.
Note that the SHFTSDCLK field = GX_BASE+Memory Offset 8404h[5:3]. Refer to the AMD Geode™ GX1 Proces-
sor Data Book for more information.
For example, for a 266 MHz SC3200 running a 88.7 MHz SDRAM clock, with a shift value of 3:
t1 Min = -3 + (3 * (3.76 * 0.45)) = 2.08 ns
t1 Max = 0.1 + (3 * (3.76 * 0.45)) = 5.18 ns
Parameter
Control output valid from SDCLK[3:0]
MA[12:0], BA[1.0] output valid from
SDCLK[3:0]
MD[63.0] output valid from SDCLK[3:0]
MD[63.0] read data in setup to SDCLK_IN
MD[63:0] read data hold to SDCLK_IN
SDCLK[3:0], SDCLK_OUT cycle time
233 MHz
266 MHz
SDCLK[3:0], SDCLK_OUT fall/rise time
between (V
SDCLK_IN fall/rise time between
(V
SDCLK[3:0], SDCLK_OUT high time
233 MHz
266 MHz
SDCLK[3:0], SDCLK_OUT low time
233 MHz
266 MHz
ILD
-V
Revision 5.1
IHD
)
CORE
OLD
-V
= 1.8V@ 233/266 MHz, V
Table 9-12. Memory Controller Timing Parameters
OHD
)
IO
= 3.3V, @25
-3.0 + (x
-3.2 + (x
-2.2 + (x
Min
1.3
2.0
8.3
4.0
3.0
4.0
2.5
10
*
*
*
y)
y)
y)
o
C.
0.1 + (x
0.1 + (x
0.7 + (x
Max
13.5
14
AMD Geode™ SC3200 Processor Data Book
2
2
*
*
*
y)
y)
y)
Unit
ns
ns
ns
ns
ns
ns
ns
ns
ns
ns
Electrical Specifications
Comments
Note 1, Note 2
Note 2
Note 2