6
LatticeECP2M PCI Express x4
Lattice Semiconductor
Evaluation Board User’s Guide
Table 4. ispVM JTAG Connector (see Appendix A, Figure 8)
Programming Daisy Chain
This board includes two Lattice programmable devices that can be programmed in a daisy chain. A jumper setting
of J105 controls the chain. Both devices are in the programming chain from the JTAG header, J8, with jumpers on
J105 across Pins{1-2}, Pins{3-4}, and Pins{5-6}. Jumpers on J10 across Pins{1-2} and Pins{3-4} are also required
for both devices to be in the chain.
If the user desires to only program U1, J105 requires jumpers across Pins{1-2} and Pins{4-6}. J10 requires only a
jumper across Pins {1-2}.
Download Procedures
Requirements:
• PC with ispVM System v.16.1.2 (or later) programming management software, installed with appropriate drivers
(USB driver for USB Cable, Windows
N
T/2000/XP parallel port driver for ispDOW
N
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.
• ispDOW
N
LOAD Cable (HW-DL
N
-3C, HW-USB
N
-2A, or equivalent)
JTAG Download
The LatticeECP2M device can be configured easily via its JTAG port. The device is SRAM-based; it must remain
powered on to retain its configuration when programmed in this fashion.
1.
Connect the ispDOW
N
LOAD Cable to the appropriate header. J8 is used for the 1x10 cable.
Important Note:
The board must be un-powered when connecting, disconnecting, or reconnecting the isp-
DOWNLOAD Cable. Always connect the ispDOWNLOAD Cable's GND pin (black wire), before connecting any
other JTAG pins. Failure to follow these procedures can in result in damage to the LatticeECP2M FPGA device
and render the board inoperable.
2.
Connect the LatticeECP2M 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
Pin 5
N
C
Pin 6
TMS
Pin 7
G
N
D
Pin 8
TCK
Pin 9
DO
N
E
Pin 10
I
N
IT
N
