- 您現(xiàn)在的位置：買(mǎi)賣(mài)IC網(wǎng) > PDF目錄358620 > 30046-23 (NATIONAL SEMICONDUCTOR CORP) Low Power Integrated x86-Compatible 32-Bit Geode GXLV Processor(低功耗集成兼容X86的32位 Geode GXLV技術(shù)處理器) PDF資料下載
參數(shù)資料
| 型號(hào)： | 30046-23 |
| 廠商： | NATIONAL SEMICONDUCTOR CORP |
| 元件分類： | 微控制器/微處理器 |
| 英文描述： | Low Power Integrated x86-Compatible 32-Bit Geode GXLV Processor(低功耗集成兼容X86的32位 Geode GXLV技術(shù)處理器) |
| 中文描述： | 32-BIT, 200 MHz, MICROPROCESSOR, CPGA320 |
| 封裝： | SPGA-320 |
| 文件頁(yè)數(shù)： | 80/247頁(yè) |
| 文件大?。?/td> | 4379K |
| 代理商： | 30046-23 |
第1頁(yè)第2頁(yè)第3頁(yè)第4頁(yè)第5頁(yè)第6頁(yè)第7頁(yè)第8頁(yè)第9頁(yè)第10頁(yè)第11頁(yè)第12頁(yè)第13頁(yè)第14頁(yè)第15頁(yè)第16頁(yè)第17頁(yè)第18頁(yè)第19頁(yè)第20頁(yè)第21頁(yè)第22頁(yè)第23頁(yè)第24頁(yè)第25頁(yè)第26頁(yè)第27頁(yè)第28頁(yè)第29頁(yè)第30頁(yè)第31頁(yè)第32頁(yè)第33頁(yè)第34頁(yè)第35頁(yè)第36頁(yè)第37頁(yè)第38頁(yè)第39頁(yè)第40頁(yè)第41頁(yè)第42頁(yè)第43頁(yè)第44頁(yè)第45頁(yè)第46頁(yè)第47頁(yè)第48頁(yè)第49頁(yè)第50頁(yè)第51頁(yè)第52頁(yè)第53頁(yè)第54頁(yè)第55頁(yè)第56頁(yè)第57頁(yè)第58頁(yè)第59頁(yè)第60頁(yè)第61頁(yè)第62頁(yè)第63頁(yè)第64頁(yè)第65頁(yè)第66頁(yè)第67頁(yè)第68頁(yè)第69頁(yè)第70頁(yè)第71頁(yè)第72頁(yè)第73頁(yè)第74頁(yè)第75頁(yè)第76頁(yè)第77頁(yè)第78頁(yè)第79頁(yè)當(dāng)前第80頁(yè)第81頁(yè)第82頁(yè)第83頁(yè)第84頁(yè)第85頁(yè)第86頁(yè)第87頁(yè)第88頁(yè)第89頁(yè)第90頁(yè)第91頁(yè)第92頁(yè)第93頁(yè)第94頁(yè)第95頁(yè)第96頁(yè)第97頁(yè)第98頁(yè)第99頁(yè)第100頁(yè)第101頁(yè)第102頁(yè)第103頁(yè)第104頁(yè)第105頁(yè)第106頁(yè)第107頁(yè)第108頁(yè)第109頁(yè)第110頁(yè)第111頁(yè)第112頁(yè)第113頁(yè)第114頁(yè)第115頁(yè)第116頁(yè)第117頁(yè)第118頁(yè)第119頁(yè)第120頁(yè)第121頁(yè)第122頁(yè)第123頁(yè)第124頁(yè)第125頁(yè)第126頁(yè)第127頁(yè)第128頁(yè)第129頁(yè)第130頁(yè)第131頁(yè)第132頁(yè)第133頁(yè)第134頁(yè)第135頁(yè)第136頁(yè)第137頁(yè)第138頁(yè)第139頁(yè)第140頁(yè)第141頁(yè)第142頁(yè)第143頁(yè)第144頁(yè)第145頁(yè)第146頁(yè)第147頁(yè)第148頁(yè)第149頁(yè)第150頁(yè)第151頁(yè)第152頁(yè)第153頁(yè)第154頁(yè)第155頁(yè)第156頁(yè)第157頁(yè)第158頁(yè)第159頁(yè)第160頁(yè)第161頁(yè)第162頁(yè)第163頁(yè)第164頁(yè)第165頁(yè)第166頁(yè)第167頁(yè)第168頁(yè)第169頁(yè)第170頁(yè)第171頁(yè)第172頁(yè)第173頁(yè)第174頁(yè)第175頁(yè)第176頁(yè)第177頁(yè)第178頁(yè)第179頁(yè)第180頁(yè)第181頁(yè)第182頁(yè)第183頁(yè)第184頁(yè)第185頁(yè)第186頁(yè)第187頁(yè)第188頁(yè)第189頁(yè)第190頁(yè)第191頁(yè)第192頁(yè)第193頁(yè)第194頁(yè)第195頁(yè)第196頁(yè)第197頁(yè)第198頁(yè)第199頁(yè)第200頁(yè)第201頁(yè)第202頁(yè)第203頁(yè)第204頁(yè)第205頁(yè)第206頁(yè)第207頁(yè)第208頁(yè)第209頁(yè)第210頁(yè)第211頁(yè)第212頁(yè)第213頁(yè)第214頁(yè)第215頁(yè)第216頁(yè)第217頁(yè)第218頁(yè)第219頁(yè)第220頁(yè)第221頁(yè)第222頁(yè)第223頁(yè)第224頁(yè)第225頁(yè)第226頁(yè)第227頁(yè)第228頁(yè)第229頁(yè)第230頁(yè)第231頁(yè)第232頁(yè)第233頁(yè)第234頁(yè)第235頁(yè)第236頁(yè)第237頁(yè)第238頁(yè)第239頁(yè)第240頁(yè)第241頁(yè)第242頁(yè)第243頁(yè)第244頁(yè)第245頁(yè)第246頁(yè)第247頁(yè)
www.national.com
80
Revision 1.2
Processor Programming (
Continued
)
G
Single-step operation is enabled by setting the TF bit (bit
8) in the EFLAGS register. When the TF is set, the CPU
generates a debug exception (vector 1) after the execution
of every instruction. Data breakpoints also generate a
debug exception and are specified by loading the debug
registers (DR0-DR3, see Table 3-12 on page 55) with the
appropriate values.
A
Fault exception
is reported before completion of the
instruction that generated the exception. By reporting the
fault before instruction completion, the CPU is left in a
state that allows the instruction to be restarted and the
effects of the faulting instruction to be nullified. Fault
exceptions include divide-by-zero errors, invalid opcodes,
page faults and coprocessor errors. Debug exceptions
(vector 1) are also handled as faults (except for data
breakpoints and single-step operations). After execution
of the fault service routine, the instruction pointer points to
the instruction that caused the fault.
An
Abort exception
is a type of fault exception that is
severe enough that the CPU cannot restart the program at
the faulting instruction. The double fault (vector 8) is the
only abort exception that occurs on the CPU.
3.6.3
When the CPU services an interrupt or exception, the cur-
rent program
’
s instruction pointer and flags are pushed
onto the stack to allow resumption of execution of the
interrupted program. In protected mode, the processor
also saves an error code for some exceptions. Program
control is then transferred to the interrupt handler (also
called the interrupt service routine). Upon execution of an
IRET at the end of the service routine, program execution
resumes at the instruction pointer address saved on the
stack when the interrupt was serviced.
Interrupt Vectors
3.6.3.1
Each interrupt (except SMI#) and exception are assigned
one of 256 interrupt vector numbers as shown in Table 3-
29. The first 32 interrupt vector assignments are defined
or reserved. INT instructions acting as software interrupts
may use any of interrupt vectors, 0 through 255.
Interrupt Vector Assignments
The non-maskable hardware interrupt (NMI) is assigned
vector 2. Illegal opcodes including faulty FPU instructions
will cause an illegal opcode exception, interrupt vector 6.
NMI interrupts are enabled by setting bit 2 of the CCR7
register (Index EBh[2] = 1, see Table 3-11 on page 52 for
register format).
In response to a maskable hardware interrupt (INTR), the
CPU issues interrupt acknowledge bus cycles used to read
the vector number from external hardware. These vectors
should be in the range 32 to 255 as vectors 0 to 31 are pre-
defined.
3.6.3.2
The interrupt vector number is used by the CPU to locate
an entry in the interrupt descriptor table (IDT). In real
mode, each IDT entry consists of a 4-byte far pointer to
the beginning of the corresponding interrupt service rou-
tine. In protected mode, each IDT entry is an 8-byte
descriptor. The Interrupt Descriptor Table Register (IDTR)
specifies the beginning address and limit of the IDT. Fol-
lowing RESET, the IDTR contains a base address of
00000000h with a limit of 3FFh.
Interrupt Descriptor Table
The IDT can be located anywhere in physical memory as
determined by the IDTR register. The IDT may contain dif-
ferent types of descriptors: interrupt gates, trap gates and
task gates. Interrupt gates are used primarily to enter a
hardware interrupt handler. Trap gates are generally used
to enter an exception handler or software interrupt han-
dler. If an interrupt gate is used, the Interrupt Enable Flag
(IF) in the EFLAGS register is cleared before the interrupt
handler is entered. Task gates are used to make the tran-
sition to a new task.
Table 3-29. Interrupt Vector Assignments
Interrupt
Vector
Function
Exception
Type
0
1
2
3
4
5
6
7
8
9
Divide error
Debug exception
NMI interrupt
Breakpoint
Interrupt on overflow
BOUND range exceeded
Invalid opcode
Device not available
Double fault
Reserved
Invalid TSS
Segment not present
Stack fault
General protection fault
Page fault
Reserved
FPU error
Alignment check exception
Reserved
Maskable hardware interrupts
Programmed interrupt
Note:
*Data breakpoints and single steps are traps. All other
debug exceptions are faults.
Fault
Trap/Fault*
---
Trap
Trap
Fault
Fault
Fault
Abort
---
Fault
Fault
Fault
Trap/Fault
Fault
---
Fault
Fault
---
Trap
Trap
10
11
12
13
14
15
16
17
18:31
32:55
0:255
相關(guān)PDF資料 |
PDF描述 |
|---|---|
| 300471U | Radial, -55dotc, long life wsitching-power |
| 300CNQ | SCHOTTKY RECTIFIER |
| 300CNQ035 | SCHOTTKY RECTIFIER |
| 300CNQ040 | SCHOTTKY RECTIFIER |
| 300CNQ045 | SCHOTTKY RECTIFIER |
相關(guān)代理商/技術(shù)參數(shù) |
參數(shù)描述 |
|---|---|
| 30046-46L | 制造商:LENOX 功能描述:HOLE SAW BI-METAL 73MM |
| 300-466A | 制造商:LG Corporation 功能描述:CABINET ASSYCMT-9325 |
| 300-466B | 制造商:LG Corporation 功能描述:CABINET ASSYCMT-9324 |
| 300-466K | 制造商:LG Corporation 功能描述:CABINET ASSYCMT-9322 |
| 300-466R | 制造商:LG Corporation 功能描述:FRONT CABINET |
發(fā)布緊急采購(gòu)，3分鐘左右您將得到回復(fù)。