s3c4510b Samsung Semiconductor, Inc., s3c4510b Datasheet - Page 150

• Manufacturer Part Number: s3c4510b
• Description: 16/32-bit Risc Microcontroller
• Manufacturer: Samsung Semiconductor, Inc.

SYSTEM MANAGER
ENDIAN MODES
S3C4510B supports both little-endian and big-endian for external memory or I/O devices by setting the pin
LITTLE (pin 49).The system diagram for S3C4510B is shown in Figure 4-4.
Below tables (4-4 through 4-14) are show the program/data path between the CPU register and the external
memory using little-/big-endian and word/half-word/byte access.
4-8
CPU Data Bus
31
CPU Addr.
CPU Register
(ARM7TMDI)
CPU
S3C4510B
0
Figure 4-4. Data Bus Connection with External Memory
31
Special Register
SA (Addr.)
SD (Data)
Controller
Memory
0
XDATA
ADDR
External Memory
31
0
Bit Number
...X0
...X4
...X8
...XC
Word Address
S3C4510B