參數(shù)資料
型號: 101-1158
廠商: Rabbit Semiconductor
文件頁數(shù): 46/112頁
文件大?。?/td> 0K
描述: KIT DEVELOPMENT INT'L RCM4100
標(biāo)準(zhǔn)包裝: 1
系列: RabbitCore 4000
類型: MPU 模塊
適用于相關(guān)產(chǎn)品: RCM4100
所含物品: RabbitCore 模塊、開發(fā)板、交流適配器、纜線和 Dynamic C? 光盤
User’s Manual
35
4.2.2 Programming Port
The RCM4100 series of modules is programmed via the 10-pin header labeled J1. The
programming port uses the Rabbit 4000’s Serial Port A for communication. Dynamic C
uses the programming port to download and debug programs.
Serial Port A is also used for the following operations.
Cold-boot the Rabbit 4000 on the RCM4100 series after a reset.
Fast copy designated portions of flash memory from one Rabbit-based board (the
master) to another (the slave) using the Rabbit Cloning Board.
Alternate Uses of the Programming Port
All three clocked Serial Port A signals are available as
a synchronous serial port
an asynchronous serial port, with the clock line usable as a general CMOS I/O pin
The programming port may also be used as a serial port via the DIAG connector on the
programming cable.
In addition to Serial Port A, the Rabbit 4000 startup-mode (SMODE0, SMODE1), status,
and reset pins are available on the programming port.
The two startup mode pins determine what happens after a reset—the Rabbit 4000 is
either cold-booted or the program begins executing at address 0x0000.
The status pin is used by Dynamic C to determine whether a Rabbit microprocessor is
present. The status output has three different programmable functions:
1. It can be driven low on the first op code fetch cycle.
2. It can be driven low during an interrupt acknowledge cycle.
3. It can also serve as a general-purpose output.
Since the status pin is not used by the system once a program has been downloaded and is
running, the status pin can then be used as a general-purpose CMOS output.
The reset pin is an external input that is used to reset the Rabbit 4000.
Refer to the Rabbit 4000 Microprocessor User’s Manual for more information.
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