Operating Modes
MOTOROLA
SDRAM Memory Controller
24-27
The activate and read comprise the final two commands in the triplet and must refer to the same bank as
the original command register load. Changes to the bank address within the triplet will return
indeterminate results. Details on command register encodings and operation are covered in Section 24.9.4,
“SyncFlash Configuration.”
Figure 24-23. Load Command Register Timing Diagram
24.6.7 SyncFlash Program Mode
SyncFlash programming and status checking operations require the same 3 command sequence described
in Section 24.6.6. Because these operations are repeated many thousands of times to program the entire
array, a hardware programming mode is provided as an alternative to the software-intensive method
previously described.
SyncFlash programming mode implements two command sequence triplets: a program sequence (write)
and a status check sequence (read). The state diagram for these two sequences is illustrated in
Figure 24-24.
Figure 24-24. SyncFlash Program Mode State Diagram
COMMAND
SDCLK
RAS,
CAS,
SDWE
CSDx
DATA
ADDR
ROW
x
Config
x
LCR
ACT
READ
IDLE
Write
NOP
Read
LCR
Addr = 0x40
Bank = A
LCR
Addr = 0x70
Bank = *
ACT
Addr = Row
A
Bank = A
ACT
Addr = *
Bank = *
* — Any address within memory region
WRITE
Addr = Col
A
Bank = A
READ
Addr = *
Bank = *
Содержание DragonBall MC9328MX1
Страница 68: ...1 12 MC9328MX1 Reference Manual MOTOROLA Introduction ...
Страница 86: ...2 18 MC9328MX1 Reference Manual MOTOROLA Signal Descriptions and Pin Assignments ...
Страница 116: ...3 30 MC9328MX1 Reference Manual MOTOROLA Memory Map ...
Страница 126: ...4 10 MC9328MX1 Reference Manual MOTOROLA ARM920T Processor ...
Страница 160: ...8 8 MC9328MX1 Reference Manual MOTOROLA System Control ...
Страница 272: ...13 32 MC9328MX1 Reference Manual MOTOROLA DMA Controller ...
Страница 281: ...Programming Model MOTOROLA Watchdog Timer Module 14 9 ...
Страница 282: ...14 10 MC9328MX1 Reference Manual MOTOROLA Watchdog Timer Module ...
Страница 300: ...15 18 MC9328MX1 Reference Manual MOTOROLA Analog Signal Processor ASP ...
Страница 438: ...18 16 MC9328MX1 Reference Manual MOTOROLA Serial Peripheral Interface Modules SPI 1 and SPI 2 ...
Страница 478: ...19 40 MC9328MX1 Reference Manual MOTOROLA LCD Controller ...
Страница 542: ...20 64 MC9328MX1 Reference Manual MOTOROLA Multimedia Card Secure Digital Host Controller Module MMC SD ...
Страница 574: ...21 32 MC9328MX1 Reference Manual MOTOROLA Memory Stick Host Controller MSHC Module ...
Страница 598: ...23 16 MC9328MX1 Reference Manual MOTOROLA Real Time Clock RTC ...
Страница 670: ...24 72 MC9328MX1 Reference Manual MOTOROLA SDRAM Memory Controller ...
Страница 726: ...25 56 MC9328MX1 Reference Manual MOTOROLA SmartCard Interface Module SIM ...
Страница 736: ...26 10 MC9328MX1 Reference Manual MOTOROLA General Purpose Timers ...
Страница 854: ...29 18 MC9328MX1 Reference Manual MOTOROLA I2C Module ...
Страница 900: ...30 46 MC9328MX1 Reference Manual MOTOROLA Synchronous Serial Interface SSI ...
Страница 942: ...32 26 MC9328MX1 Reference Manual MOTOROLA GPIO Module and I O Multiplexer IOMUX ...