S3C9454B View Datasheet(PDF) - Samsung
Part Name
Description
MFG CO.
'S3C9454B' PDF : 199 Pages View PDF
S3C9454B/F9454B
INDEXED ADDRESSING MODE (Concluded)
ADDRESSING MODES
4-Bit Working
Register Address
Program Memory
XLH (OFFSET)
XLL (OFFSET)
dst
src
OPCODE
NEXT 3 Bits
Point to working
register pair
(1 of 8)
LSB Selects
+
16-Bit 16-Bit
Register File
Register
Pair
Program Memory
or
Datamemory
16-Bit
address
added to
offset
Sample Instructions:
LDC
R4, #1000H[RR2]
LDE
R4, #1000H[RR2]
16-Bit
OPERAND
Value used in
instruction
; The values in the program address (RR2 + #1000H)
are loaded into register R4.
; Identical operation to LDC example, except that
external program memory is accessed.
Figure 3-9. Indexed Addressing to Program or Data Memory with Long Offset
3-9
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