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參數(shù)資料
| 型號： | PC8240VTPU200ETC |
| 廠商： | Atmel Corp. |
| 英文描述： | Integrated Processor Family |
| 中文描述： | 綜合處理器系列 |
| 文件頁數(shù)： | 38/42頁 |
| 文件大?。?/td> | 421K |
| 代理商： | PC8240VTPU200ETC |
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38
PC8240
2149A–HIREL–05/02
JTAG Configuration Signals
Boundary scan testing is enabled through the JTAG interface signals. (BSDL descrip-
tions
of
the
PC8240
are
available
www.mot.com/SPS/PowerPC/teksupport/tools/BSDL/) The TRST signal is optional in
the IEEE 1149.1 specification but is provided on all PowerPC implementations. While it
is possible to force the TAP controller to the reset state using only the TCK and TMS
signals, more reliable power-on reset performance will be obtained if the TRST signal is
asserted during power-on reset. Since the JTAG interface is also used for accessing the
common on-chip processor (COP) function of PowerPC processors, simply tying TRST
to HRST_CPU/HRST_CTRL is not practical. Note that the two hard reset signals on the
PC8240 (HRST_CPU and HRST_CTRL) must be asserted and negated together to
guarantee normal operation.
on
the
internet
at
The common on-chip processor (COP) function of PowerPC processors allows a remote
computer system (typically a PC with dedicated hardware and debugging software) to
access and control the internal operations of the processor. The COP interface con-
nects primarily through the JTAG port of the processor, with some additional status
monitoring signals. The COP port requires the ability to independently assert
HRST_CPU/HRST_CTRL or TRST in order to fully control the processor. If the target
system has independent reset sources, such as voltage monitors, watchdog timers,
power supply failures, or push-button switches, then the COP reset signals must be
merged into these signals with logic.
The arrangement shown in Figure 28 allows the COP to independently assert
HRST_CPU/HRST_CTRL or TRST while ensuring that the target can drive
HRST_CPU/HRST_CTRL as well. The shown COP header, adds many benefits includ-
ing breakpoints, watchpoints, register and memory examination/modification and other
standard debugger features are possible through this interface. Availability of these fea-
tures can be as inexpensive as an unpopulated footprint for a header to be added when
needed.
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相關(guān)代理商/技術(shù)參數(shù) |
參數(shù)描述 |
|---|---|
| PC8245 | 制造商:ATMEL 制造商全稱:ATMEL Corporation 功能描述:Integrated Processor Family |
| PC8245MTPU300D | 制造商:e2v Aerospace & Defense 功能描述:MPU MPC82xx RISC 32-Bit 0.25um 300MHz 3.3V 352-Pin TBGA 制造商:e2v technologies 功能描述:MPU MPC82XX RISC 32BIT 0.25UM 300MHZ 3.3V 352TBGA - Trays |
| PC8245MTPU333D | 制造商:e2v Aerospace & Defense 功能描述:MPU MPC82xx RISC 32-Bit 0.25um 333MHz 3.3V 352-Pin TBGA 制造商:e2v technologies 功能描述:MPU MPC82XX RISC 32BIT 0.25UM 333MHZ 3.3V 352TBGA - Trays |
| PC8245MTPU350D | 制造商:e2v technologies 功能描述:PC8245MTPU350D - Trays |
| PC824A | 功能描述:PHOTOCOUPLER 2CH AC INPUT 8-DIP RoHS:否 類別:隔離器 >> 光隔離器 - 晶體管，光電輸出 系列:- 標準包裝:1,000 系列:- 通道數(shù):2 輸入類型:DC 電壓 - 隔離:2500Vrms 電流傳輸比（最小值）:7% @ 16mA 電流傳輸比（最大）:50% @ 16mA 輸出電壓:20V 電流 - 輸出 / 通道:8mA 電流 - DC 正向(If):25mA Vce飽和（最大）:- 輸出類型:有 Vcc 的晶體管 安裝類型:通孔 封裝/外殼:8-DIP（0.400"，10.16mm） 包裝:管件 其它名稱:HCPL-2530W |
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