Table of Contents
(Continued)
Chapter 4 Thumb Instruction Set
(Continued)
Format 16: Conditional Branch..............................................................................................................4-34
Operation....................................................................................................................................4-34
Instruction Cycle Times................................................................................................................4-35
Examples ...................................................................................................................................4-35
Format 17: Software Interrupt................................................................................................................4-36
Operation....................................................................................................................................4-36
Instruction Cycle Times................................................................................................................4-36
Examples ...................................................................................................................................4-36
Format 18: Unconditional Branch..........................................................................................................4-37
Operation....................................................................................................................................4-37
Examples ...................................................................................................................................4-37
Format 19: Long Branch With Link ........................................................................................................4-38
Operation....................................................................................................................................4-38
Instruction Cycle Times................................................................................................................4-39
Examples ...................................................................................................................................4-39
Instruction Set Examples .....................................................................................................................4-40
Multiplication by a Constant Using Shifts and Adds ........................................................................4-40
General Purpose Signed Divide.....................................................................................................4-41
Division by a Constant .................................................................................................................4-43
Chapter 5 Memory Controller
Overview .............................................................................................................................................5-1
Function Description............................................................................................................................5-3
Bank0 Bus Width........................................................................................................................5-3
Memory (SROM/SDRAM) Address Pin Connections.......................................................................5-3
Sdram Bank Address Pin Connection............................................................................................5-4
Nwait Pin Operation.....................................................................................................................5-5
Programmable Access Cycle .......................................................................................................5-11
Bus Width & Wait Control Register (BWSCON) .............................................................................5-13
Bank Control Register (BANKCONN: NGCS0-NGCS5)....................................................................5-15
Bank Control Register (BANKCONN: NGCS6-NGCS7)....................................................................5-16
Refresh Control Register ..............................................................................................................5-17
Banksize Register .......................................................................................................................5-18
SDRAM Mode Register Set Register (MRSR) ................................................................................5-19
viii
S3C2410A MICROPROCESSOR
SAMSUNG [ SAMSUNG SEMICONDUCTOR ]
