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参数资料
| 型号： | S5N8947 |
| 厂商： | SAMSUNG SEMICONDUCTOR CO. LTD. |
| 英文描述： | MCU for ADSL/Cable Modem |
| 中文描述： | 单片机为ADSL / Cable Modem的 |
| 文件页数： | 19/49页 |
| 文件大小： | 407K |
| 代理商： | S5N8947 |
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ELECTRONICS
S5N8947 (ADSL/Cable Modem MCU)
SAMSUNG ELECTRONICS
Page : 19
MagIC Team
An exception arises whenever the normal flow of program execution is interrupted. For example,
when processing must be diverted to handle an interrupt from a peripheral. The processor's state just prior
to handling the exception must be preserved so that the program flow can be resumed when the exception
routine is completed. Multiple exceptions may arise simultaneously.
To process exceptions, the S5N8947 uses the banked core registers to save the current state. The
old PC value and the CPSR contents are copied into the appropriate R14 (LR) and SPSR register. The PC
and mode bits in the CPSR are forced to a value which corresponds to the type of exception being
processed.
The S5N8947 core supports seven types of exceptions. Each exception has a fixed priority and a
corresponding privileged processor mode, as shown in following Table
Exception
Mode on Entry
Supervisor mode
Abort mode
FIQ mode
IRQ mode
Abort mode
Undefined mode
Supervisor mode
Priority
1 (highest)
2
3
4
5
6
6 (lowest)
Reset
Data abort
FIQ
IRQ
Prefetch abort
Undefined instruction
SWI
Table 2 S5N8947 CPU Exceptions
相关PDF资料 |
PDF描述 |
|---|---|
| S5N8947X | MCU for ADSL/Cable Modem |
| S5N8950 | G.dmt ADSL Transceiver for CO and CPE |
| S5N8951 | G.dmt ADSL Analog Front End IC |
| S5N8951X | G.dmt ADSL Analog Front End IC |
| S5N8952 | ADSL Transceiver for NIC |
相关代理商/技术参数 |
参数描述 |
|---|---|
| S5N8947X | 制造商:SAMSUNG 制造商全称:Samsung semiconductor 功能描述:MCU for ADSL/Cable Modem |
| S5N8950 | 制造商:SAMSUNG 制造商全称:Samsung semiconductor 功能描述:G.dmt ADSL Transceiver for CO and CPE |
| S5N8951 | 制造商:SAMSUNG 制造商全称:Samsung semiconductor 功能描述:G.dmt ADSL Analog Front End IC |
| S5N8951X | 制造商:SAMSUNG 制造商全称:Samsung semiconductor 功能描述:G.dmt ADSL Analog Front End IC |
| S5N8952 | 制造商:SAMSUNG 制造商全称:Samsung semiconductor 功能描述:ADSL Transceiver for NIC |
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