MPC8360E/MPC8358E PowerQUICC II Pro Processor Revision 2.x TBGA Silicon Hardware Specifications, Rev. 4
26
Freescale Semiconductor
DDR and DDR2 SDRAM
Figure 7
shows the DDR SDRAM output timing for address skew with respect to any MCK.
Figure 7. Timing Diagram for t
AOSKEW
Measurement
Figure 8
provides the AC test load for the DDR bus.
Figure 8. DDR AC Test Load
Table 22. DDR and DDR2 SDRAM Measurement Conditions
Symbol
DDR
DDR2
Unit
Notes
V
TH
MV
REF
± 0.31 V
MV
REF
± 0.25 V
V
1
V
OUT
0.5
×
GV
DD
0.5
×
GV
DD
V
2
Notes:
1. Data input threshold measurement point.
2. Data output measurement point.
ADDR/CMD
MCK[n]
MCK[n]
t
MCK
CMD
NOOP
t
AOSKEW(min)
ADDR/CMD
CMD
NOOP
t
AOSKEW(max)
Output
Z
0
= 50
Ω
GV
DD
/2
R
L
= 50
Ω