参数资料
型号: MB89PV950CF
元件分类: 微控制器/微处理器
英文描述: 8-BIT, 5 MHz, MICROCONTROLLER, CQFP64
封装: 0.80 MM PITCH, PIGGY BACK, MQFP-64
文件页数: 36/110页
文件大小: 619K
代理商: MB89PV950CF
HARDWARE CONFIGURATION
2– 16
(3) Description of registers
The details of each register is described below.
The ILRx sets the interrupt level of each peripheral. The digits in the center
of each bit correspond to the interrupt numbers.
[Bits 7 and 6][Bits 5 and 4][Bits 3 and 2][Bits 1 and 0]Lx1, Lx0: Interrupt
level setting bit
When an interrupt is requested from a peripheral, the interrupt controller
transfers the interrupt level based on the value set at the 2 bits of the ILRx
corresponding to the interrupt to the CPU.
CPU
(a) Interrupt level register 1 to 3 (ILRx: Interrupt Level Register x)
ILR1
ILR2
ILR3
ITR
Address: 007CH
Address: 007DH
Address: 007EH
(Initial value)
11111111B
Bit 7
Bit 6
Bit 5
Bit 4
Bit 3
Bit 2
Bit 1
Bit 0
L31
L30
L21
L20
L11
L10
L01
L00
L71
L70
L61
L60
L51
L50
L41
L40
LB1
LB0
LA1
LA0
L91
L90
L81
L80
(W)
Address: 007CH
Address: 007DH
Address: 007EH
Address: 007FH
IR0
IR1
IR2
IR3
IRB
#0
#1
#2
#3
#11
Interrupt control module
MB89820 hardware manual
Interrupt
number
Table address
Upper
Lower
FFFA
FFF8
FFF6
FFF4
FFE4
FFFB
FFF9
FFF7
FFF5
FFE5
Interrupt requests
from peripherals
L3X
[Example]
0
1
2
3 (None)
X
0
1
Lx1
Lx0
Required interrupt level
(b) Interrupt test register (ITR)
ILR1
Address: 007CH
ILR2
Address: 007DH
ILR3
Address: 007EH
ITR
Address: 007FH
Address: 007FH
(Initial value)
XXXXXX00B
Bit 7
Bit 6
Bit 5
Bit 4
Bit 3
Bit 2
Bit 1
Bit 0
——————
**
(—)
The ITR is used for testing. Do not access it.
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