MPC8313EZQADDC Freescale Semiconductor, MPC8313EZQADDC Datasheet - Page 436

• Manufacturer Part Number: MPC8313EZQADDC
• Description: Microprocessors - MPU 8313 REV2.2 PB W/ENC
• Manufacturer: Freescale Semiconductor

Specifications of MPC8313EZQADDC

• Processor Series: MPC8313E
• Core: e300
• Data Bus Width: 16 bit
• Maximum Clock Frequency: 133 MHz
• Program Memory Size: 16 KB
• Data Ram Size: 16 KB
• Interface Type: I2C
• Mounting Style: SMD/SMT
• Package / Case: PBGA
• Number Of Programmable I/os: 32
• Number Of Timers: 4

DDR Memory Controller
9.5.4.1
9.5.5
The DDR memory controller transfers the mode register set commands to the SDRAM array, and it uses
the setting of TIMING_CFG_0[MRS_CYC] for the Mode Register Set cycle time.
Figure 9-27
code; the second corresponds to SDMODE. The Mode Register Set cycle time is set to 2 DRAM cycles.
9-42
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If running with many devices, zero-delay PLL clock buffers, JEDEC-JESD82 standard, should be
used. These buffers were designed for DDR applications.
PCB traces for DDR clock signals should be short, all on the same layer, and of equal length and
loading.
DDR SDRAM manufacturers provide detailed information on PCB layout and termination issues.
DDR SDRAM Mode-Set Command Timing
SDRAM Clock
shows the timing of the mode-set command. The first transfer corresponds to the ESDMODE
MCK, MCK
Clock Distribution
MPC8313E PowerQUICC™ II Pro Integrated Processor Family Reference Manual, Rev. 2
Figure 9-26. DDR SDRAM Clock Distribution Example for x8 DDR SDRAMs
CS[0]
MDQ n
MRAS
MCAS
MDQS
MBA n
MWE
MCS
MA n
Figure 9-27. DDR SDRAM Mode-Set Command Timing
Code
0x4
0
1
DDR
Code
0x0
2
3
4
A[13:0], BA[2:0], MRAS, MCAS, MWE, CKE
DQ[0:7], DQS[0], DM[0]
DQ[8:15], DQS[1], DM[1]
DQ[16:23], DQS[2], DM[2]
DQ[24:31], DQS[3], DM[3]
5
6
7
8
9
10
Freescale Semiconductor
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12