MPC8315E-RDBA Freescale Semiconductor, MPC8315E-RDBA Datasheet - Page 21

• Manufacturer Part Number: MPC8315E-RDBA
• Description: BOARD MPU 8315 POWERQUICC II
• Manufacturer: Freescale Semiconductor
• Series: PowerQUICC II™ PROr
• Type: MPUr

Specifications of MPC8315E-RDBA

• Contents: Board
• Processor To Be Evaluated: MPC8315E
• Data Bus Width: 32 bit
• Interface Type: Ethernet, I2C, SPI, UART
• Operating Supply Voltage: 1.8 V
• For Use With/related Products: MPC8315E
• Lead Free Status / RoHS Status: Lead free / RoHS Compliant

Table 18
Figure 6
Freescale Semiconductor
At recommended operating conditions with GVDD of (1.8 V± 100 mV)
At recommended operating conditions with GVDD of (2.5V ± 200 mV)
Controller Skew for MDQS—MDQ
Note:
1. t
2. The amount of skew that can be tolerated from MDQS to a corresponding MDQ signal is called t
3. Memory controller ODT value of 150 Ω is recommended.
Controller Skew for MDQS—MDQ
Note:
1. t
2. The amount of skew that can be tolerated from MDQS to a corresponding MDQ signal is called t
MDQS[n]
captured with MDQS[n]. This should be subtracted from the total timing budget.
determined by the following equation: tDISKEW =+/–(T/4 – abs(t
absolute value of t
captured with MDQS[n]. This should be subtracted from the total timing budget.
determined by the following equation: t
absolute value of t
CISKEW
CISKEW
MDQ[x]
MCK[n]
MCK[n]
shows the DDR SDRAM input AC timing for the tolerated MDQS to MDQ skew (t
and
represents the total amount of skew consumed by the controller between MDQS[n] and any corresponding bit to be
represents the total amount of skew consumed by the controller between MDQS[n] and any corresponding bit to be
Table 19
CISKEW
CISKEW
MPC8315E PowerQUICC
Parameter
Parameter
lists the input AC timing specifications for the DDR SDRAM interface.
.
.
Table 18. DDR2 SDRAM Input AC Timing Specifications
Table 19. DDR SDRAM Input AC Timing Specifications
Figure 6. Timing Diagram for t
DISKEW
t
t
MCK
DISKEW
266 MHz
200 MHz
266 MHz
200 MHz
™
=+/–(T/4 – abs(t
II Pro Processor Hardware Specifications, Rev. 0
D0
Symbol
Symbol
t
t
CISKEW
CISKEW
CISKEW
CISKEW
D1
)) where T is the clock period and abs(t
)) where T is the clock period and abs(t
t
DISKEW
DISKEW
–1250
–1250
–875
–750
Min
Min
1250
1250
Max
Max
875
750
DISKEW
DISKEW
DDR and DDR2 SDRAM
.This can be
. This can be
Unit
Unit
ps
ps
CISKEW
CISKEW
DISKEW
Notes
1, 2, 3
Notes
) is the
) is the
1, 2
)
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