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ispDOWNLOAD Cables
ispDOWNLOAD Cable Pin Definitions
The functions provided by the ispDOWNLOAD cables correspond with available functions on Lattice programmable
devices. Since some devices contain different programming features, the specific functions provided by the isp-
DOWNLOAD cable may depend on the selected target device. ispVM System/Diamond Programmer software will
automatically generate the appropriate functions based on the selected device. See Table 1 for an overview of the
ispDOWNLOAD cable functions.
Table 1. ispDOWNLOAD Cable Pin Definitions
ispDOWNLOAD
ispDOWNLOAD Cable
Cable Pin
VCC
SDO/TDO
SDI/TDI
ispEN/Enable/ ?
PROG
TRST
DONE
MODE/TMS
GND
SCLK/TCK
INIT
Name
Programming Voltage
Test Data Output
Test Data Input
Enable
Test Reset
DONE
Test Mode Select Input
Ground
Test Clock Input
Initialize
Pin Type
Input
Input
Output
Output
Output
Input
Output
Input
Output
Input
Description
Connect to V CC or V CCJ plane of the target device. Typical
I CC = 10mA. Your board design supplies the power for
V CC . Note: This may not be the same as a target device’s
V CCO plane.
Used to shift data out via the IEEE1149.1 (JTAG) ?
programming standard.
Used to shift data in via the IEEE1149.1 programming
standard.
Enable device to be programmed.
Optional IEEE 1149.1 state machine reset.
DONE indicates status of configuration
Used to control the IEEE1149.1 state machine.
Connect to ground plane of the target device
Used to clock the IEEE1149.1 state machine
Indicates that ORCA ? device is ready for configuration.
Figure 2. ispDOWNLOAD Cable In-System Programming Interface for the PC (HW-USB-1A or HW-USB-2A) 1
Function
V CC
SDO/TDO
SDI/TDI
Color
Red
Brown
Orange
To
PC
ispEN/Enable/PROG
TRST/DONE
MODE/TMS
Yellow
Green
Purple
To
System
Board
6'
HW-USB-1A
GND
SCLK/TCK
INIT
Black
White
Blue
1. Lattice PAC-Designer ? software does not support programming with USB cables. To program ispPAC devices with these cables, use the
ispVM System software/Diamond Programmer.
Figure 3. ispDOWNLOAD Cable In-System Programming Interface for the PC (HW-DLN-3C and Equivalents) 1
HW7265-DL3 and HW7265-DL3A – Grey Housing with RJ-45 Connector
Other Cables are Labeled with Part Number
Function
V CC
SDO/TDO
SDI/TDI
Color
Red
Brown
Orange
To
PC
25-pin
Parallel
Port
Adapter
6'
ispEN/Enable/Prog
TRST
MODE/TMS
Yellow
Green
Purple
To
System
Board
GND
SCLK/TCK
Black
White
1. HW7265-DL3, HW7265-DL3A, HW-DL-3B, HW-DL-3C and HW-DLN-3C are functionally equivalent products.
3
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