- 您現(xiàn)在的位置：買賣IC網(wǎng) > PDF目錄67681 > IBM25403GCX-3JC76C2 RISC PROCESSOR, PQFP16 PDF資料下載
參數(shù)資料
| 型號： | IBM25403GCX-3JC76C2 |
| 元件分類： | 微控制器/微處理器 |
| 英文描述： | RISC PROCESSOR, PQFP16 |
| 封裝： | PLASTIC, QFP-160 |
| 文件頁數(shù)： | 45/54頁 |
| 文件大?。?/td> | 541K |
| 代理商： | IBM25403GCX-3JC76C2 |
第1頁第2頁第3頁第4頁第5頁第6頁第7頁第8頁第9頁第10頁第11頁第12頁第13頁第14頁第15頁第16頁第17頁第18頁第19頁第20頁第21頁第22頁第23頁第24頁第25頁第26頁第27頁第28頁第29頁第30頁第31頁第32頁第33頁第34頁第35頁第36頁第37頁第38頁第39頁第40頁第41頁第42頁第43頁第44頁當前第45頁第46頁第47頁第48頁第49頁第50頁第51頁第52頁第53頁第54頁
IBM PowerPC 403GCX
5
Asynchronous imprecise exceptions include sys-
tem resets and machine checks. Synchronous
precise exceptions include most debug excep-
tions, program exceptions, data storage viola-
tions, TLB misses, system calls, and alignment
error exceptions. Asynchronous precise excep-
tions include the critical interrupt exception,
external interrupts, and internal timer facility
exceptions and some debug events.
Only one exception is handled at a time. If multi-
ple exceptions occur simultaneously, they are
handled in priority order.
The 403GCX processes exceptions as reset, crit-
ical, or noncritical. Four exceptions are dened
as critical: machine check exceptions, debug
exceptions, exceptions caused by an active level
on the critical interrupt pin, and the rst time-out
from the watchdog timer.
When a noncritical exception is taken, special
purpose register Save/Restore 0 (SRR0) is
loaded with the address of the excepting instruc-
tion (synchronous exceptions other than system
call) or the next sequential instruction to be pro-
cessed (asynchronous exceptions and system
call). If the 403GCX is executing a multicycle
instruction (load/store multiple, load/store string,
multiply or divide), the instruction is terminated
and its address stored in SRR0. Save/Restore
Register 1 (SRR1) is loaded with the contents of
the machine state register. The MSR is then
updated to reect the new context of the
machine. The new MSR contents take effect
beginning with the rst instruction of the excep-
tion handling routine.
At the end of the exception handling routine, exe-
cution of a return from interrupt (r) instruction
forces the contents of SRR0 and SRR1 to be
loaded into the program counter and the MSR,
respectively. Execution then begins at the
address in the program counter.
The four critical exceptions are processed in a
similar manner. When a critical exception is
taken, SRR2 and SRR3 hold the next sequential
address to be processed when returning from the
exception and the contents of the machine state
register, respectively. After the critical exception
handling routine, return from critical interrupt
(rfci) forces the contents of SRR2 and SRR3 to
be loaded into the program counter and the
MSR, respectively.
Timers
The 403GCX contains four timer functions: a
time base, a programmable interval timer (PIT), a
xed interval timer (FIT), and a watchdog timer.
The time base is a 64-bit counter incremented at
the timer clock rate. The timer clock may be
driven by either an internal signal equal to the
processor clock rate or by a separate external
timer clock pin. No interrupts are generated when
the time base rolls over.
Table 2. 403GCX Exception Priorities, Types and Classes
Priority
Exception Type
Exception Class
1
System Reset
Asynchronous imprecise
2
Machine Check
Asynchronous imprecise
3
Debug
Synchronous precise
(except UDE and EXC)
4
Critical Interrupt
Asynchronous precise
5
WatchdogTimer Time-out
Asynchronous precise
6
Program Exception, Data Storage Exception,TLB Miss, and
System Calls
Synchronous precise
7
Alignment Exceptions
Synchronous precise
8
External Interrupts
Asynchronous precise
9
Fixed Interval Timer
Asynchronous precise
10
Programmable Interval Timer
Asynchronous precise
相關(guān)PDF資料 |
PDF描述 |
|---|---|
| IBM25405GP-3BA200C2 | RISC PROCESSOR, PBGA456 |
| IBM25EMPPC603EFG-100 | 32-BIT, 100 MHz, RISC PROCESSOR, PQFP240 |
| IBM25EMPPC603EBG-100 | 32-BIT, 100 MHz, RISC PROCESSOR, CBGA255 |
| IBM25EMPPC740LDBC4000 | 32-BIT, 400 MHz, RISC PROCESSOR, CBGA255 |
| IBM25EMPPC750LCBF3330 | 32-BIT, 333 MHz, RISC PROCESSOR, CBGA360 |
相關(guān)代理商/技術(shù)參數(shù) |
參數(shù)描述 |
|---|---|
| IBM25403GCX-JA50C2 | 制造商:IBM 功能描述:403GCX-JA50C |
| IBM25403GCX-JA60C2 | 制造商:IBM 功能描述:403GCX-JA60C2 |
| IBM25C710AB3A100 | 制造商:未知廠家 制造商全稱:未知廠家 功能描述:Controller Miscellaneous - Datasheet Reference |
| IBM25CPC700BB3B66 | 制造商:未知廠家 制造商全稱:未知廠家 功能描述:Peripheral (Multifunction) Controller |
| IBM25CPC700BB3B83 | 制造商:未知廠家 制造商全稱:未知廠家 功能描述:Peripheral (Multifunction) Controller |
發(fā)布緊急采購，3分鐘左右您將得到回復。