PEX 8311RDK Hardware Reference Manual, Version 0.90
© 2005 PLX Technology, Inc. All rights reserved.
25
Table 4-5. Altera Uncommitted FPGA JTAG interconnections
FPGA JTAG
program option
Connector
[pin]
JTAG
signal
Link Resistor
(value)
FPGA signal [pin]
Pull-up resistor
or jumper
Pull-down
resistor or
jumper
JP6 [1]
F_TCK
R442 (0)
TCK [88]
-
R637 (10K)
JP6 [2]
GND
-
-
-
-
JP6 [3]
F_TDO
R450 (0)
TDO [90]
-
-
JP6 [4]
VCC
1
-
-
-
-
JP6 [5]
F_TMS
R445 (0)
TMS [89]
R631 (10K)
-
JP6 [6]
VIO (3.3V)
-
-
-
-
JP6 [7]
NC
-
-
-
-
JP6 [8]
NC
-
-
-
-
JP6 [9]
F_TDI
R399 (0)
TDI [95]
R630 (10K)
-
JP6 [10]
NC
2
-
-
-
-
-
-
R185 (0)
nCE [21]
-
R250 (0)
- -
R439
(0)
nSTATUS
[87]
3
JP5 [1-2] or
JP5 NC + R117
(10K)
-
-
-
R436 (0)
CONF_DONE [86]
4
JP4 [1-2] or
JP4 NC + R116
(10K)
-
-
-
R234 (0)
nCONFIG [14]
5,6
JP2 [1-2] or
JP2 NC + R114
(10K)
-
-
-
R189 (0)
MSEL0 [22]
5
- R250
(0)
-
-
R194 (0)
MSEL1 [23]
5
- R250
(0)
-
-
R230 (0)
DATA0 [13]
5
- R266
(0)
Altera FPGA using
ByteBlaster II,
MasterBlaster or
ByteBlas 10 pin
header.
-
-
R197 (0)
DCLK [24]
5,7
- JP3
[2-3]
Notes:
1) This pin is connected to TP20. Connect this pin to the same supply voltage as the download
cable.
2) For some programmers it may be necessary to tie this pin to GND.
3) nSTATUS is connected to GPIO3. During configuration ensure that GPIO3 is an input. This is the
default condition for GPIO3.
4) CONF_DONE is connected to GPIO2. During configuration ensure that GPIO2 is an input. This is
the default condition for GPIO2.
5) The connections for these pins assume only JTAG configuration is being used. When supporting
non-JTAG configuration schemes see section 4.4.2.3.2.
6) nCONFIG is connected to GPIO0. The low to high transition begins configuration. If GPIO0 is
programmed to be an output configuration can be enabled using this signal.
7) DCLK is connected to GPIO1. When JP3 is in position 2-3 GPIO1 is strapped to GND and must
always be configured as an input.
In addition to the above resistors the appropriate power supply and ground resistors must also be
populated.
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