24-56
MC9328MX1 Reference Manual
MOTOROLA
SDRAM Memory Controller
Figure 24-52. Single 256 Mbit (8M x 32) Connection Diagram (IAM = 0)
NOTE:
JEDEC has not issued a standard pinout and array configuration for the
256 Mbit density memories in a x32 package option. This connection
diagram is based on the PC100 Standard.
24.8.3 SDRAM Reset Initialization
SDRAM initialization must follow a defined sequence following the power-on condition. The steps are as
follows:
1. Apply power and start clock. Attempt to maintain CKE high, DQM high and NOP conditions
at the command inputs.
2. Maintain stable power, clock, and NOP conditions for a minimum of 200
µ
s.
3. Issue precharge commands for all banks either with precharge all or precharge individual
bank commands.
4. After all banks are in the idle state for a minimum time of t
RP
, issue 8 or more auto-refresh
commands.
5. Issue a mode register set command to initialize the mode register.
Table 24-32. Single 256 Mbit (8M x 32) Control Register Values (IAM = 0)
Control Field
Value
Density
32 Mbyte
Page size
1024 bytes
ROW
13
COL
8
DSIZ
32 (D [31:0])
IAM
Non-bank–interleaved
CLK
CKE
BA0
A[12:11]
A[10:0]
RAS
CAS
CS
WE
DQM1
DQM0
DQ[31:0]
8M x 32
SDRAM
SDCLK
SDCKE
A13
A[12:11]
MA[11:10], A[10:2]
RAS
CAS
CS2/CSD0
SDWE
DQM3
DQM2
DQM1
DQM0
D[31:0]
MC9328MX1
DQM3
DQM2
BA1
A14
Summary of Contents for DragonBall MC9328MX1
Page 68: ...1 12 MC9328MX1 Reference Manual MOTOROLA Introduction ...
Page 86: ...2 18 MC9328MX1 Reference Manual MOTOROLA Signal Descriptions and Pin Assignments ...
Page 116: ...3 30 MC9328MX1 Reference Manual MOTOROLA Memory Map ...
Page 126: ...4 10 MC9328MX1 Reference Manual MOTOROLA ARM920T Processor ...
Page 160: ...8 8 MC9328MX1 Reference Manual MOTOROLA System Control ...
Page 272: ...13 32 MC9328MX1 Reference Manual MOTOROLA DMA Controller ...
Page 281: ...Programming Model MOTOROLA Watchdog Timer Module 14 9 ...
Page 282: ...14 10 MC9328MX1 Reference Manual MOTOROLA Watchdog Timer Module ...
Page 300: ...15 18 MC9328MX1 Reference Manual MOTOROLA Analog Signal Processor ASP ...
Page 438: ...18 16 MC9328MX1 Reference Manual MOTOROLA Serial Peripheral Interface Modules SPI 1 and SPI 2 ...
Page 478: ...19 40 MC9328MX1 Reference Manual MOTOROLA LCD Controller ...
Page 574: ...21 32 MC9328MX1 Reference Manual MOTOROLA Memory Stick Host Controller MSHC Module ...
Page 598: ...23 16 MC9328MX1 Reference Manual MOTOROLA Real Time Clock RTC ...
Page 670: ...24 72 MC9328MX1 Reference Manual MOTOROLA SDRAM Memory Controller ...
Page 726: ...25 56 MC9328MX1 Reference Manual MOTOROLA SmartCard Interface Module SIM ...
Page 736: ...26 10 MC9328MX1 Reference Manual MOTOROLA General Purpose Timers ...
Page 854: ...29 18 MC9328MX1 Reference Manual MOTOROLA I2C Module ...
Page 900: ...30 46 MC9328MX1 Reference Manual MOTOROLA Synchronous Serial Interface SSI ...
Page 942: ...32 26 MC9328MX1 Reference Manual MOTOROLA GPIO Module and I O Multiplexer IOMUX ...