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H8SX/1663M 数据表(PDF) 1238 Page - Renesas Technology Corp

部件名 H8SX/1663M
功能描述  Renesas 32-Bit CISC Microcomputer H8SX Family / H8SX/1600 Series
PDF  1504 Pages
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制造商  RENESAS [Renesas Technology Corp]
网页  http://www.renesas.com
标志 RENESAS - Renesas Technology Corp

H8SX/1663M 数据表(HTML) 1238 Page - Renesas Technology Corp

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Section 26 Boundary Scan
Rev. 2.00 Sep. 24, 2008 Page 1206 of 1468
REJ09B0412-0200
26.2
Block Diagram of Boundary Scan Function
Figure 26.1 shows the block diagram of the boundary scan function.
JTBPR
TDI
TDO
TCK
TMS
TRST
MUX
TAP controller
Decoder
JTIR
JTDIR
JTBPR:
JTBSR:
JTIR:
JTDIR:
Bypass register
Boundary scan register
Instruction register
ID register
[Legend]
Figure 26.1 Block Diagram of Boundary Scan Function
26.3
Input/Output Pins
Table 26.1 shows the I/O pins used in the boundary scan function.
Table 26.1
Pin Configuration
Pin Name
I/O
Description
TCK
Input
Test clock input pin
Clock signal for boundary scan. Input the clock the duty cycle of which is 50
percent when boundary scan function is used.
TMS
Input
Test mode select pin
TDI
Input
Test data input pin
TDO
Output
Test data output pin
TRST
Input
Test reset input pin



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