
ML62Q1000 Series User's Manual
Chapter 2 CPU and Memory Space
FEUL62Q1000
2-9
2.3.2.2
Operation Mode Register (CR8), Operation Status Register (CR9)
The operation mode register (CR8) is a coprocessor general-purpose register to set the operation mode and
enables/disables the operation.
The operation status register (CR9) is a register to store the status of each operation result.
CR8 and CR9 are byte type registers and they can be accessed as a word type register (CERn), double word type register
(CXRn), or quad word type register (CQRn) combining the consecutive registers.
The bit symbol are unavailable to use in the software.
Access:
R/W
Access size:
8/16 bits
Initial value:
0x0000
15
14
13
12
11
10
9
8
7
6
5
4
3
2
1
0
Word
CER8
Byte
CR9
CR8
Bit
c
z
s
ov
q
-
-
use
clen
-
-
sign
-
clmod
2
clmod
1
clmod
0
R/W
R/W
R/W
R/W
R/W
R/W
R
R
R/W
R/W
R
R
R/W
R
R/W
R/W
R/W
Initial
value
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
Bit No.
Bit symbol name
Description
15
c
This becomes "1" if the operation result is carried or the divisor is 0 in the division mode.
The value is updated in each operation. In addition, a value can be written.
14
z
This becomes "1" if the operation result is "0". The value is updated in each operation. In
addition, a value can be written.
13
s
This becomes "1" if the operation result is a negative number. For a multiply-accumulate
(saturating/non-saturating) operation, this indicates the state of the most significant bit in
the operation result. The value is updated in each operation. In addition, a value can be
written.
12
ov
This becomes "1" if the operation result exceeds the range expressible by two's
complement. The value is updated every time the operation is executed.
In addition, a value can be written.
11
q
This becomes "1" for the saturated result of a saturating multiply-accumulate operation.
The value is held in the next operation.
To initialize it to "0", it is necessary to write "0".
8
use
A bit to indicate that the operation is in progress.
0: Operation under suspension (initial value)
1: Operating
7
clen
A bit to enable/disable the operation.
If the clen bit is cleared to "0" during an operation, the next operation is disabled after
completion of the current one.
0: Operation disabled (initial value)
1: Operation enabled
4
sign
A bit to set the sign operation.
0: Unsigned operation (initial value)
1: Signed operation
Содержание ML62Q1000 Series
Страница 17: ...Chapter 1 Overview...
Страница 112: ...Chapter 2 CPU and Memory Space...
Страница 154: ...Chapter 3 Reset Function...
Страница 166: ...Chapter 4 Power Management...
Страница 196: ...Chapter 5 Interrupts...
Страница 248: ...Chapter 6 Clock generation Circuit...
Страница 274: ...Chapter 7 Low Speed Time Base Counter...
Страница 291: ...Chapter 8 16 Bit Timer...
Страница 320: ...Chapter 9 Functional Timer FTM...
Страница 382: ...Chapter 10 Watchdog Timer...
Страница 402: ...Chapter 11 Serial Communication Unit...
Страница 456: ...Chapter 12 I2 C Bus Unit...
Страница 491: ...Chapter 13 I2 C Master...
Страница 512: ...Chapter 14 DMA Controller...
Страница 531: ...Chapter 15 Buzzer...
Страница 550: ...Chapter 16 Simplified RTC...
Страница 559: ...Chapter 17 GPIO...
Страница 594: ...Chapter 18 External Interrupt Function...
Страница 612: ...Chapter 19 CRC Generator...
Страница 632: ...Chapter 20 Analog Comparator...
Страница 644: ...Chapter 21 D A Converter...
Страница 655: ...Chapter 22 Voltage Level Supervisor...
Страница 676: ...Chapter 23 Successive Approximation Type A D Converter...
Страница 709: ...Chapter 24 Regulator...
Страница 714: ...Chapter 25 Flash Memory...
Страница 743: ...Chapter 26 Code Option...
Страница 750: ...Chapter 27 LCD Driver...
Страница 788: ...Chapter 28 On Chip Debug Function...
Страница 795: ...Chapter 29 Safety Function...
Страница 813: ...Appendix A...
Страница 881: ...Revision History...