ML620Q503/Q504 User's Manual
Chapter 2 CPU and Memory Space
FEUL620Q504 2–5
2.7 Multiplication/Division Coprocessor
2.7.1 General Description
This LSI has the built-in multiplication/division function as a coprocessor of the CPU nX-U16/100.
For the coprocessor instructions, see "nX-U16/100 Core Instruction Manual".
For the multiplication/division library including the routines that carry out operations using this function, see
"MULDIVU8LIB User's Manual".
• Signed or unsigned operation setting
• Multiplication: 16bit x 16bit (operation time 4 cycles)
• Division: 32bit / 16bit (operation time 8 cycles)
• Division: 32bit / 32bit (operation time 16 cycles)
• Multiply-accumulate (non-saturating): 16bit x 16bit + 32bit (operation time 4 cycles)
• Multiply-accumulate (saturating): 16bit x 16bit + 32bit (operation time 4 cycles)
• In a saturating multiply-accumulate operation, the result is fixed to 7FFF_FFFFH for a positive number
and 8000_0000H for a negative number when it is out of the expressible range.
2.7.2 List of Registers
These are byte type registers for carrying out operations.
Though the registers are in byte length, consecutive registers can be accessed as a word type register (ERn), double
word type register (XRn), or quad type register (QRn) by combining them using different addressing modes.
Name
Symbol
(Quad-Word)
Symbol
(Double-Word)
Symbol
(Word)
Symbol
(Byte)
R/W Size
Initial value
[H]
A register L
CQR0
CXR0
CER0
CR0
R/W
8
00
A register H
CR1
R/W
8
00
B register L
CER2
CR2
R/W
8
00
B register H
CR3
R/W
8
00
C register L
CXR4
CER4
CR4
R/W
8
00
C register H
CR5
R/W
8
00
D register L
CER6
CR6
R/W
8
00
D register H
CR7
R/W
8
00
Operation mode register
CQR8
CXR8
CER8
CR8
R/W
8
00
Operation status register
CR9
R/W
8
00
–
CER10
CR10
-
-
00
–
CR11
-
-
00
–
CXR12
CER12
CR12
-
-
00
–
CR13
-
-
00
–
CER14
CR14
-
-
00
Coprocessor ID register
CR15
R
8
81
CR10 to CR14 have no function. Reading them gives "00H". Writing is ignored.
Содержание LAPIS SEMICONDUCTOR ML620Q503
Страница 2: ...ML620Q503 Q504 User s Manual Issue Date Apr 16 2015 FEUL620Q504 01...
Страница 18: ...Chapter 1 Overview...
Страница 32: ...Chapter 2 CPU and Memory Space...
Страница 44: ...Chapter 3 Reset Function...
Страница 50: ...Chapter 4 Power Management...
Страница 70: ...Chapter 5 Interrupts...
Страница 134: ...Chapter 6 Clock Generation Circuit...
Страница 161: ...Chapter 7 Time Base Counter...
Страница 170: ...Chapter 8 Timers...
Страница 183: ...Chapter 9 Function Timer FTM...
Страница 231: ...Chapter 10 Watchdog Timer...
Страница 239: ...Chapter 11 Synchronous Serial Port SSIO...
Страница 251: ...Chapter 12 Synchronous Serial Port with FIFO SSIOF...
Страница 283: ...Chapter 13 UART...
Страница 303: ...Chapter 14 UART with FIFO UARTF...
Страница 327: ...Chapter 15 I2 C Bus Interface...
Страница 344: ...Chapter 16 Port XT...
Страница 350: ...Chapter 17 Port 0...
Страница 361: ...Chapter 18 Port 1...
Страница 368: ...Chapter 19 Port2...
Страница 379: ...Chapter 20 Port 3...
Страница 395: ...Chapter 21 Port 4...
Страница 410: ...Chapter 22 Port 5...
Страница 426: ...Chapter 23 Melody Driver...
Страница 439: ...Chapter 24 RC Oscillation type A D Converter RC ADC...
Страница 462: ...Chapter 25 Successive Approximation Type A D Converter SA ADC...
Страница 479: ...Chapter 26 Analog Comparator...
Страница 489: ...Chapter 27 Flash Memory Control...
Страница 505: ...Chapter 28 Voltage Level Supervisor VLS...
Страница 517: ...Chapter 29 LLD circuit...
Страница 519: ...Chapter 30 On Chip Debug Function...
Страница 522: ...Appendixes...
Страница 552: ...Revision History...