6
LatticeSC PCI Express x1
Lattice Semiconductor
Evaluation Board User’s Guide
ispVM Download Interface
J3 is an 10-pin JTAG connector used in conjunction with the ispVM USB download cable to program and control
the device. Connections to the cable typically consist of Pin[1:2:3:6:7:
8
]. The other pins are considered optional
and are not required to be connected for standard operation.
Table 4. ispVM JTAG Connector (see Appendix A, Figure 5)
Download Procedures
Requirements
• PC with ispVM System v.16.0 (or later) programming management software, installed with appropriate drivers
(USB driver for USB Cable,
W
indows
N
T/2000/XP parallel port driver for ispDO
WN
LOAD Cable). The latest
ispVM System software can be downloaded from the Lattice web site at www.latticesemi.com/ispvm.
Note: An option to install these drivers is included as part of the ispVM System setup.
• ispDO
WN
LOAD Cable
JTAG Download
The LatticeSC device can be configured easily via its JTAG port. The device is SRAM-based; it must remain pow-
ered on to retain its configuration when programmed in this fashion.
1.
Connect the ispDO
WN
LOAD cable to the appropriate header. J3 is used for the 1x10 cable. Connections to J3
use only pins[1-3][6-
8
].
2.
Connect the LatticeSC PCI Express x1 evaluation board to the appropriate power sources and power up
board.
3.
Start the ispVM System software.
Pin 1
VCC
Pin 2
TDO
Pin 3
TDI
Pin 4
PROGRAM
N
1
Pin 5
N
C
Pin 6
TMS
Pin 7
G
N
D
Pin
8
TCK
Pin 9
DO
N
E
1
Pin 10
I
N
IT
N
1
1. Optional pins.
