HW-USBN-2A Lattice, HW-USBN-2A Datasheet - Page 3

• Manufacturer Part Number: HW-USBN-2A
• Description: Programming Accessories ispDOWNLOAD Cable
• Manufacturer: Lattice
• Series: -r

Specifications of HW-USBN-2A

• Product: Cable Assemblies
• Accessory Type: IspDOWNLOAD Cable
• Features: Connect To Multiple PC Interfaces, Easy-to-Use Programming Connectors
• Rohs Compliant: Yes
• Lead Free Status / RoHS Status: Lead free / RoHS Compliant
• For Use With: Programming Lattice ISP Devices
• For Use With/related Products: Lattice Programmable Products

Lattice Semiconductor
Target Board Design Considerations
A 4.7K pull-down resistor is recommended on the TCK connection of the target board. This pull-down is recom-
mended to avoid inadvertent clocking of the TAP controller induced by fast clock edges or as Vcc ramps up. This
pull-down is recommended for all Lattice programmable families.
Programming Flywire and Connection Reference
Refer to Table 2 when connecting a flywire download cable to systems that use the 1x8-position or 2x5-position
connectors. For newer Lattice FPGA families, a 1x10 connector used in conjunction with the ispDOWNLOAD USB
cable adds support for the DONE and INITN signals. Both of these signals are inputs to the cable, and can be used
to help verify device configuration.
Table 2. Flywire Conversion Reference
Table 3 lists the recommend pin connections. Please contact Lattice technical support for information on unlisted
device families. (e-mail: [e-mail], phone: 1-800-LATTICE).
V
TDO/SDO
TDI/SDI
ispEN
TRST
TMS/MODE
GND
TCK
DONE
INITN
1. For devices that have a V
2. For older Lattice ISP devices, a 0.01µF decoupling capacitor is required on ispEN/ENABLE of the target board.
3. The TRST and DONE pin is multiplexed on the ispDOWNLOAD USB cable. If the device TRST signal is available on the board, connect the
4. A 4.7K pull-down resister is recommended on TCK of the target board.
CC
close to the device. Please refer to the device data sheet to determine if the device has a V
USB flywire TRST/DONE wire to TRST. If the device DONE signal is available on the board (or if both TRST and DONE are available), con-
nect the USB flywire TRST/DONE wire to DONE. Please make sure the correct setting is selected in ispVM (Options, Cable and I/O Port
Setup). This will tell ispVM whether the TRST/DONE cable is used as a TRST or a DONE signal.
1
4
/SCLK
2
3
3
/Enable/PROGRAMN
Function
CCJ
pin, the V
CCJ
Flywire Cable
must be connected to the cable’s V
Orange
Purple
Brown
Yellow
Green
Green
White
Black
Blue
Red
1x10 Connector
3
10
1
2
3
4
5
6
7
8
9
CC,
and a 0.1µF decoupling capacitor is required on V
CCJ
1x8 Connector
pin.
1
2
3
4
5
6
7
8
ispDOWNLOAD Cables
2x5 Connector
4 (2 and 8)
10
6
7
5
9
3
1
CCJ