Pentek Model 78741 Installation Manual
Page 17
Rev.: 2.5
2.6
PCIe Carrier Jumpers
(continued)
Jumper blocks
J18, J19, J20, J21
, and
J22
(shown in
) select the signal
source for JTAG operation, from either the carrier’s
J4
JTAG connector (
)
or the carrier’s PCIe connector. The following table shows the jumper settings.
Table 2
−
4: JTAG Signal Select
−
Jumper Blocks J18, J19, J20, J21, J22
Jumper Block JTAG Signal Jumper Pins
Signal Source
J18
TMS (Test
Mode Select)
Pins 1
−
3 *
Use JTAG J4 connector TMS
Pins 2
−
4
Use PCIE connector TMS
J19
TCK (Test
Clock)
Pins 1
−
3 *
Use JTAG J4 connector TCK
Pins 2
−
4
Use PCIE connector TCK
J20
TDI (Test Data
In)
Pins 1
−
3 *
Use JTAG J4 connector TDI
Pins 2
−
4
Use PCIE connector TDI
J21
TDO (Test
Data Out)
Pins 1
−
3 *
Use JTAG J4 connector TDO
Pins 2
−
4
Use PCIE connector TDO
J22
TRST (Test
Reset)
Pins 1
−
3
Use JTAG J4 connector TRST_N
Pins 2
−
4 *
Use PCIe connector PERST_N
* Factory Default Setting
−
For proper JTAG operation, all jumpers
should be set to 1
−
3 except J22, which should be set to 2
−
4.
Note
The user should not change jumpers that are
not
described in these pages—
these are reserved for factory test and setup purposes only.
