MEDIA5200KIT1 Freescale Semiconductor, MEDIA5200KIT1 Datasheet - Page 20

• Manufacturer Part Number: MEDIA5200KIT1
• Description: MCU, MPU & DSP Development Tools MEDIA5200 SW DEVT SYSTEM
• Manufacturer: Freescale Semiconductor

Specifications of MEDIA5200KIT1

• Processor To Be Evaluated: MPC5200B
• Data Bus Width: 32 bit
• Interface Type: Ethernet, USB
• Lead Free Status / Rohs Status: Not Compliant

20
Sample position A: data are sampled on the expected edge of MEM_CLK, the MDQS signal indicate the valid data
Sample position B: data are sampled on a later edge of MEM_CLK, SDRAM controller is waiting for the valid MDQS signal
NOTE: Control Signals signals are composed of RAS, CAS, MEM_WE, MEM_CS, MEM_CS1 and CLK_EN
MDQS (Data Strobe)
MBA (Bank Selects)
Sample Window
MDQS (Data Strobe)
Sample Window
MA (Address)
Control Signals
MDQ (Data)
Read Data
MDQ (Data)
Read Data
MEM_CLK
MEM_CLK
t
t
valid
valid
Figure 7. Timing Diagram—DDR SDRAM Memory Read Timing
t
valid
Active
Row
t
t
t
hold
hold
hold
NOP
MPC5200B Data Sheet, Rev. 4
Column
READ
t
data_sample_min
t
data_valid_min
NOP
t
data_valid_min
0.5
× t
MEM_CLK
NOP
t
data_sample_max
t
data_valid_max
NOP
t
t
data_sample_max
data_sample_min
t
data_valid_max
NOP
Freescale Semiconductor
NOP
Sample
position
Sample
position
A
B