Preliminary
S3C2451X RISC MICROPROCESSOR
STATIC MEMORY CONTROLLER
5-17
Preliminary product information describe products that are in development,
for which full characterization data and associated errata are not yet available.
Specifications and information herein are subject to change without notice.
BANK CONTROL REGISTERS 0-5
Register Address
R/W
Description
Reset
Value
SMBCR0
0x4F000014
R/W
Bank0 control register
See note in p5-17
SMBCR1 0x4F000034
R/W
Bank1
control register
0x303000
SMBCR2 0x4F000054
R/W
Bank2
control register
0x303010
SMBCR3 0x4F000074
R/W
Bank3
control register
0x303000
SMBCR4 0x4F000094
R/W
Bank4
control register
0x303010
SMBCR5 0x4F0000B4
R/W
Bank5
control register
0x303010
Bit
Description
Initial
State
[31:26]
Read undefined. Write as zero.
0x0
DELAYnCS
[25:22]
Controls the delay between ADDR signal and nCS signal. The field
is valid only when DRnCS bit is 1.
0x0
[21]
not available(should be high)
0x1
AddrValid
WriteEn
[20]
Controls the behavior of the signal RSMAVD
during write operations:
0: Signal always HIGH
1: Signal active for asynchronous and synchronous write accesses
(default).
0x1
BurstLenWrite
[19:18]
Burst transfer length. Sets the number of sequential transfers that
the burst device supports for a write:
00: 4-transfer burst (default)
01: Reserved
10: Reserved
11: Reserved
0x0
SyncWriteDev
[17]
0: Asynchronous device (default).
1: Synchronous device.
0x0
BMWrite
[16]
Burst mode write:
0: Nonburst writes to memory devices (default at reset)
1: Burst mode writes to memory devices.
0x0
DRnOWE [15]
0: No delay (default)
1: Get the delay between nCS signal and nOE/nWE signal.
nOE: The number of cycle is defined by SMBWSTOENRx which
must be larger than 1.
nWE: The number of cycle is defined by SMBWSTWENRx which
must be larger than 1.
This bit is applied only when nWAIT signal is used.
0x0
Reserved [14]
Reserved
0x0
Reserved
[13]
not available(should be high)
0x1
AddrValid
ReadEn
[12]
Controls the behavior of the signal RSMAVD during read operations:
0: Signal always HIGH.
1: Signal active for asynchronous and synchronous read accesses
(default).
0x1
BurstLen
Read
[11:10]
Burst transfer length. Sets the number of sequential transfers that
the burst device supports for a read:
00: 4-transfer burst. 01: 8-transfer burst.
10: 16-transfer burst. 11: Reserved
0x0