Corelis PCIe-1149.1, Руководство пользователя

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Recommended Target Connectors A-11
Figure A-7 shows a typical schematic of the target TAP connector with termination resistors. The
1K pull-up resistors should connect to the target Vcc supply corresponding to the interface voltage
(programmable on the PCIe-1149.1 from 1.25 to 3.3 V). Recommended resistor values are +/- 5%.
1K
3.3V
1K
3.3V
1 2
3 4
5 6
7 8
9 10
11 12
13 14
15 16
17 18
19 20
TRST*
TDI
TDO
TMS
TCK
Write_Strobe* / GPIO1
Ready_Busy* / GPIO3
GPIO2
UUT Power Test Point 1
UUT Power Test Point 2
I2C_SCL
I2C_SDA
1K
Vcc
1K
Vcc
1K
Vcc
1K
Vcc
1K
Vcc
1K
Vcc
1K
Vcc
to all bounday-scan devices
to I2C
devices
to I2C
devices
to TDI of first device
in the chain
to all bounday-scan devices
to all bounday-scan devices
from TDO of last device in
chain
for voltage measurement /
short testing
for voltage measurement /
short testing
from Flash Ready/Busy* pin(s)
to Flash Write_Strobe* pin(s)
33
The 33 ohm resistor
should be placed
physically close to the
device pin that drives
this signal
Figure A-7. 20-pin TAP Connector Schematic for I2C