7-8
PmPPC440: Development Mezzanine Card
April 2005
7.2.4 JTAG Chain Header
This header allows access to the CPLD programming interface.
Figure 7-5. DMC JTAG Chain Header, P4
Table 7-5. DMC JTAG Chain Header Pin Assignments, P4
Pin
Signal
Pin
Signal
1
TCK
6
no connection
2
GND
7
no connection
3
TDO
8
no connection
4
Fused 3.3 V
9
TDI
5
TMS
10
GND
TCK
Test Clock Input. This is the clock input to the boundary scan test (BST)
circuitry. Some operations occur at the rising edge, while others occur at
the falling edge.
TDI
Test Data Input. This is the serial input pin for instructions as well as test
and programming data. Data is shifted in on the rising edge of TCK.
TDO
Test Data Output. This is the serial data output pin for instructions as
well as test and programming data. Data is shifted out on the falling edge
of TCK.
TMS
Test Mode Select. This input pin provides the control signal to determine
the transitions of the TAP controller state machine. Transitions within
the state machine occur at the rising edge of TCK. Therefore, TMS must
be set up before the rising edge of TCK. TMS is evaluated on the rising
edge of TCK.
1
2
9
1
0
Содержание PmPPC440
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Страница 24: ...2 4 PmPPC440 Setup April 2005 Figure 2 3 Component Map Bottom Rev 02 P1 DMC Connector U19 MSC PLD ...
Страница 34: ...2 14 PmPPC440 Setup April 2005 ...
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Страница 56: ...6 4 PmPPC440 Ethernet Interface April 2005 ...
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