
x
MPC106 PCIB/MC User’s Manual
MOTOROLA
CONTENTS
Paragraph
Number
Title
Page
Number
Memory Interface
6.1
6.2
6.2.1
6.2.2
6.2.3
6.2.4
6.3
6.3.1
6.3.2
6.3.3
6.3.3.1
6.3.4
6.3.5
6.3.6
6.3.7
6.3.8
6.3.8.1
6.3.9
6.3.9.1
6.3.10
6.3.10.1
6.3.10.2
6.3.10.2.1
6.3.10.2.2
6.3.11
6.3.12
6.4
6.4.1
6.4.2
6.4.3
6.4.4
6.4.5
6.4.6
6.4.7
6.4.7.1
6.4.8
6.4.8.1
6.4.9
6.4.9.1
6.4.9.2
Overview..............................................................................................................6-1
Memory Interface Signal Buffering.....................................................................6-2
Flow-Through Buffers.....................................................................................6-3
Transparent Latch Buffers...............................................................................6-4
Registered Buffers ...........................................................................................6-4
Parity/ECC Path Read Control ........................................................................6-6
DRAM/EDO Interface Operation........................................................................6-7
Supported DRAM/EDO Organizations...........................................................6-8
DRAM/EDO Address Multiplexing................................................................6-9
DRAM/EDO Power-On Initialization...........................................................6-10
Supported Memory Interface Configurations............................................6-11
DRAM/EDO Interface Timing......................................................................6-12
DRAM/EDO Burst Wrap...............................................................................6-19
DRAM/EDO Latency....................................................................................6-19
DRAM/EDO Page Mode Retention ..............................................................6-20
DRAM/EDO Parity and RMW Parity...........................................................6-21
RMW Parity Latency Considerations........................................................6-21
ECC................................................................................................................6-22
DRAM/EDO Interface Timing with ECC.................................................6-22
DRAM/EDO Refresh.....................................................................................6-26
DRAM/EDO Refresh Timing....................................................................6-26
DRAM/EDO Refresh and Power Saving Modes.......................................6-28
Self-Refresh in Sleep and Suspend Modes............................................6-28
RTC Refresh in Suspend Mode.............................................................6-29
Processor-to-System-Memory Transaction Examples...................................6-29
PCI-to-System-Memory Transaction Examples............................................6-33
SDRAM Interface Operation.............................................................................6-40
Supported SDRAM Organizations ................................................................6-42
SDRAM Address Multiplexing.....................................................................6-42
SDRAM Burst and Single-Beat Transactions ...............................................6-43
SDRAM Page Mode Retention......................................................................6-43
SDRAM Power-On Initialization ..................................................................6-45
JEDEC Standard SDRAM Interface Commands...........................................6-46
SDRAM Interface Timing.............................................................................6-49
SDRAM Mode-Set Command Timing......................................................6-54
SDRAM Parity and RMW Parity ..................................................................6-55
RMW Parity Latency Considerations........................................................6-56
SDRAM Refresh............................................................................................6-56
SDRAM Refresh Timing...........................................................................6-57
SDRAM Refresh and Power Saving Modes..............................................6-58