參數(shù)資料
型號: CY7C63742-SC
廠商: CYPRESS SEMICONDUCTOR CORP
元件分類: 微控制器/微處理器
英文描述: 8-BIT, OTPROM, 12 MHz, RISC MICROCONTROLLER, PDSO24
封裝: 0.300 INCH, PLASTIC, SOIC-24
文件頁數(shù): 28/48頁
文件大?。?/td> 425K
代理商: CY7C63742-SC
PRELIMINARY
FO R
enCoRe USB CY7C63722/23
CY7C63742/43
34
21.1
Interrupt Vectors
The Interrupt Vectors supported by the device are listed in Table 21-1. The highest priority interrupt is #1 (USB Bus Reset / PS/2
activity), and the lowest priority interrupt is #11 (Wake-up Timer). Although Reset is not an interrupt, the first instruction executed
after a reset is at ROM address 0x0000h, which corresponds to the first entry in the Interrupt Vector Table. Interrupt vectors occupy
2 bytes to allow for a 2 byte JMP instruction to the appropriate Interrupt Service Routine (ISR).
Figure 21-3. Interrupt Controller Logic Block Diagram
Table 21-1. Interrupt Vector Assignments
Interrupt Vector Number
ROM Address
Function
not applicable
0x0000
Execution after Reset begins here.
1
0x0002
USB Bus Reset or PS/2 Activity interrupt
2
0x0004
128-
s timer interrupt
3
0x0006
1.024-ms timer interrupt
4
0x0008
USB Endpoint 0 interrupt
5
0x000A
USB Endpoint 1 interrupt
6
0x000C
USB Endpoint 2 interrupt
7
0x000E
SPI Interrupt
8
0x0010
Capture Timer A interrupt
9
0x0012
Capture Timer B interrupt
10
0x0014
GPIO interrupt
11
0x0016
Wake-up Timer interrupt
CLR
Global
Interrupt
Acknowledge
IRQout
USB-PS/2 Clear
Interrupt
Priority
Encoder
Enable [0]
D
Q
1
Enable
Bit
CLR
USB-PS/2 IRQ
128
s CLR
128
s IRQ
1 ms CLR
1 ms IRQ
EP0 IRQ
EP0 CLR
Wake-up IRQ
Vector
Enable [7]
CLK
CLR
D
Q
CLK
1
Wake-up CLR
Int
Wake-up
Int
USB-
EP1 IRQ
EP1 CLR
IRQ Pending
IRQ
Controlled by DI, EI, and
RETI Instructions
To CPU
CPU
PS/2
GPIO IRQ
GPIO CLR
EP2 IRQ
EP2 CLR
Capture A IRQ
Capture A CLR
Capture B IRQ
Capture B CLR
(Reg 0x20)
CLR
Enable [2]
D
Q
1
CLK
Int
EP2
(Reg 0x21)
Int Enable
Sense
(Bit 7, Reg 0xFF)
(Bit 2, Reg 0xFF)
SPI IRQ
SPI CLR
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