Samsung S3C2500B User Manual page 289

S3C2500B
5.7.9.4 Write Buffer Time-out Register
The write buffer time-out register works with the merging write buffer (if write buffer is enabled). This 16-bit
read/write field of register sets the cycles for a forced flush of the write buffer.
Registers Address
WBTOREG 0xF002000C
WBTOREG Bit
WBTO [15:0]
[31:16]
A write to a merging write buffer loads the value in the timeout register into the time-out down counter of the
buffer. When the time-out counter reaches 0 the merging write buffer contents is written(flushed) to the external
memory. The down counter is clocked by system bus clock. Storing a value of 0 in the timeout register disables
the write buffer timeout function.
31
Table 5-28. SDRAM Write Buffer Time-out Register
R/W
R/W Write buffer time-out register
Write buffer time-out delay time
Reserved
RESERVED
[15:0] Write buffer time-out delay time:
[31:16] Reserved
Figure 5-26. SDRAM Write Buffer Time-out Register
Description
Description
16
15
MEMORY CONTROLLER
Reset value
0x00000000
R/W Default value
R/W 0x00000000
–
WBTO
0
5-53