參數(shù)資料
型號: TMS320C240PQQ
英文描述: 16-Bit Microcontroller
中文描述: 16位微控制器
文件頁數(shù): 21/105頁
文件大?。?/td> 1481K
代理商: TMS320C240PQQ
TMS320C240, TMS320F240
DSP CONTROLLERS
SPRS042D – OCTOBER 1996 – REVISED NOVEMBER 1998
21
POST OFFICE BOX 1443
HOUSTON, TEXAS 77251–1443
hardware-generated interrupts (continued)
DSP Core
5
INTC INTB
INTA
Address
Lines 5–1
INT6 INT5 INT4 INT3 INT2 INT1 NMI
Address
Lines 5–1
System Module
Event Manager
IACK
INT6 INT5 INT4 INT3 INT2 INT1 NMI
IACK
NC
NC
NC
Figure 5. DSP Interrupt Structure
At the level of the system module and the event manager, each of the maskable interrupt lines (INT1–INT6) is
connected to multiple maskable interrupt sources. Sources connected to interrupt line INT1 are called Level 1
interrupts; sources connected to interrupt line INT2 are called Level 2 interrupts; and so on. For each interrupt
line, the multiple sources also have a set priority ranking. The source with the highest priority has its interrupt
request responded to by the DSP core first.
Figure 6 shows the sources and priority ranking for the interrupts controlled by the system module. For each
interrupt chain, the interrupt source of highest priority is at the top. Priority decreases from the top of the chain
to the bottom. Figure 7 shows the interrupt sources and priority ranking for the event manager interrupts.
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