STATIC MEMORY CONTROLLER
S3C2416X RISC MICROPROCESSOR
5-10
3.5 SYNCHRONOUS WRITE/ SYNCHRONOUS BURST WRITE
Figure 5-11 shows an example synchronous write operation. In this example the signal SMADDRVALID provides
a one-cycle pulse. This behavior is enabled by setting the SyncWriteDev bit in the SMBCRx register. You must
also set the AddrValidWriteEn bit for synchronous write.
The signal PnWE is only active for one cycle. This is active at the start of the transfer unless it is delayed using
the control bits WSTWEN to delay it.
Synchronous burst writes are supported by the SMC. There is no write buffer so you must delay the AHB transfer
to enable the data to be output onto the SMDATA bus. You can control the write in the same way as reads using
the bits AddrValidWriteEn, BurstLenWrite, SyncEnWrite, and BMWrite contained in the Bank Control Register,
SMCRx.
SMCLK
ADDR
DATA(OUT)
Synchronous Write
nCS
nWE
A
D(A)
SMAVD
WSTWR=3
WSTWEN=2
Figure 5-11. Synchronous Two Wait State Write
Summary of Contents for S3C2416
Page 122: ...BUS MATRIX EBI S3C2416X RISC MICROPROCESSOR 3 4 NOTES ...
Page 204: ...DMA CONTROLLER S3C2416X RISC MICROPROCESSOR 8 18 NOTES ...
Page 284: ...WATCHDOG TIMER S3C2416X RISC MICROPROCESSOR 11 6 NOTES ...
Page 320: ...REAL TIME CLOCK S3C2416X RISC MICROPROCESSOR 13 16 NOTES ...
Page 344: ...UART S3C2416X RISC MICROPROCESSOR 14 24 NOTES ...
Page 380: ...USB2 0 DEVICE S3C2416X RISC MICROPROCESSOR 16 34 NOTES ...
Page 432: ...2D S3C2416X RISC MICROPROCESSOR 18 38 NOTES ...
Page 446: ...HS_SPI CONTROLLER S3C2416X RISC MICROPROCESSOR 19 14 NOTES ...
Page 604: ...S3C2416X RISC MICROPROCESSOR S3C2416X RISC MICROPROCESSOR 23 22 NOTES ...
Page 638: ...PCM AUDIO INTERFACE S3C2416X RISC MICROPROCESSOR 25 18 NOTES ...
Page 670: ...ELECTRICAL DATA S3C2416X RISC MICROPROCESSOR 26 32 NOTES ...