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LM3S8530-IQR80-C1

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型号: LM3S8530-IQR80-C1
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  • LM3S8530-IQR80-C1 PDF文件
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功能描述: Stellaris® LM3S8530 Microcontroller
PDF文件大小: 4249.13 Kbytes
PDF页数: 共526页
制造商: TI[Texas Instruments]
制造商LOGO: TI[Texas Instruments] LOGO
制造商网址: http://www.ti.com
捡单宝LM3S8530-IQR80-C1
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120%
Figure 5-2. Test Access Port State Machine
Test Logic Reset
Run Test Idle Select DR Scan Select IR Scan
Capture DR Capture IR
Shift DR Shift IR
Exit 1 DR Exit 1 IR
Exit 2 DR Exit 2 IR
Pause DR Pause IR
Update DR Update IR
1 11
1 1
1
1 1
1 1
1 1
1 1
1 10 0
00
00
0 0
0 0
0 0
00
0
0
5.2.3 Shift Registers
The Shift Registers consist of a serial shift register chain and a parallel load register. The serial shift
register chain samples specific information during the TAP controller’s CAPTURE states and allows
this information to be shifted out of TDOduring the TAP controller’s SHIFT states. While the sampled
data is being shifted out of the chain on TDO, new data is being shifted into the serial shift register
on TDI. This new data is stored in the parallel load register during the TAP controller’s UPDATE
states. Each of the shift registers is discussed in detail in “Register Descriptions” on page 58.
5.2.4 Operational Considerations
There are certain operational considerations when using the JTAG module. Because the JTAG pins
can be programmed to be GPIOs, board configuration and reset conditions on these pins must be
considered. In addition, because the JTAG module has integrated ARM Serial Wire Debug, the
method for switching between these two operational modes is described below.
55June 22, 2010
Texas Instruments-Production Data
Stellaris® LM3S8530 Microcontroller
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