r8a77850anbg Renesas Electronics Corporation., r8a77850anbg Datasheet - Page 191

• Manufacturer Part Number: r8a77850anbg
• Description: Renesas 32-bit Risc Microcomputer Superh? Risc Engine Family
• Manufacturer: Renesas Electronics Corporation.

Bit
31 to 8
7 to 0
Bit Name
⎯
UB
Initial
Value
All 0
H'00
R/W
R
R/W
Description
Reserved
For details on reading from or writing to these bits, see
description in General Precautions on Handling of
Product.
Buffered Write Control for Each Area (64 Mbytes)
When writing is performed without using the cache or in
the cache write-through mode, these bits specify
whether the next bus access from the CPU waits for the
end of writing for each area.
0 : Buffered write (The CPU does not wait for the end of
1 : Unbuffered write (The CPU waits for the end of
UB[7]: Corresponding to the control register area
UB[6]: Corresponding to area 6
UB[5]: Corresponding to area 5
UB[4]: Corresponding to area 4
UB[3]: Corresponding to area 3
UB[2]: Corresponding to area 2
UB[1]: Corresponding to area 1
UB[0]: Corresponding to area 0
writing bus access and starts the next bus access)
writing bus access and starts the next bus access)
Rev.1.00 Jan. 10, 2008 Page 161 of 1658
7. Memory Management Unit (MMU)
REJ09B0261-0100