HW-USBN-2A【PDF 5/12 页】ACCY USB DOWNLOAD CABLE STD SPD

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ispDOWNLOAD Cables

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

Flywire

Wire

1x10

1x8

2x5

ispEN /Enable/PROGRAMN/SN/SPI_SS_B

Function

V CC 1

TDO/SO/SPI_SO

TDI/SI/SPI_SI

2

TRST 3 /CRESET_B

TMS/MODE

GND

TCK 4 /SCLK/CCLK/SPI_SCK

DONE 3

INITN/CDONE

Cable

Red

Brown

Orange

Yellow

Green

Purple

Black

White

Green

Blue

Label

VCC

TDO

TDI

ispEN/PROG

TRST/DONE

TMS

GND

TCK

TRST/DONE

INITN

Connector

1

2

3

4

5

6

7

8

9

10

Connector

1

2

3

4

5

6

7

8

Connector

6

7

5

10

9

3

4 (2 and 8)

1

1. For devices that have a V CCJ pin, the V CCJ must be connected to the cable’s V CC, and a 0.1μF decoupling capacitor is required on V CCJ

close to the device. Please refer to the device data sheet to determine if the device has a V CCJ pin.

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

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/Diamond Programmer (Options,

Cable and I/O Port Setup). This will tell ispVM/Diamond Programmer whether the TRST/DONE cable is used as a TRST or a DONE signal.

4. A 4.7K pull-down resister is recommended on TCK of the target board.

Table 3 lists the recommend pin connections. Please contact Lattice technical support for information on unlisted

device families. (e-mail: techsupport@latticesemi.com, phone: 1-800-LATTICE).

Table 3. Recommended Pin Connections

Device Family

TDI

TDO

TMS

TCK

ispEN/PROG 1,6 TRST 2 /DONE 3,6

INITN 3,6

VCC

GND

LatticeECP3?

LatticeECP2M?/LatticeECP2?

LatticeECP?/LatticeEC?

LatticeXP2?

LatticeXP?

LatticeSC?/LatticeSCM?

Mandatory Mandatory Mandatory Mandatory

Mandatory Mandatory Mandatory Mandatory

Mandatory Mandatory Mandatory Mandatory

Mandatory Mandatory Mandatory Mandatory

Mandatory Mandatory Mandatory Mandatory

Mandatory Mandatory Mandatory Mandatory

Optional

Optional

Optional

Optional

Optional

Optional

Optional

Optional

Optional

Optional

Optional

Optional

Optional

Optional

Optional

Optional

Optional

Optional

Mandatory Mandatory

Mandatory Mandatory

Mandatory Mandatory

Mandatory Mandatory

Mandatory Mandatory

Mandatory Mandatory

iCE40?

Mandatory Mandatory

N/A

Mandatory

Mandatory

Recommended Recommended Mandatory Mandatory

MachXO2?

MachXO?

ORCA ? /FPSC

ispXPGA ?

ispXPLD?

ispMACH ? 4000

ispMACH/ispLSI? 5000

MACH ? 4A 4

ispGDX2?

ispClock?

Platform Manager?

Power Manager/Power Manager II

Mandatory Mandatory Mandatory Mandatory

Mandatory Mandatory Mandatory Mandatory

Mandatory Mandatory Mandatory Mandatory

Mandatory Mandatory Mandatory Mandatory

Mandatory Mandatory Mandatory Mandatory

Mandatory Mandatory Mandatory Mandatory

Mandatory Mandatory Mandatory Mandatory

Mandatory Mandatory Mandatory Mandatory

Mandatory Mandatory Mandatory Mandatory

Mandatory Mandatory Mandatory Mandatory

Mandatory Mandatory Mandatory Mandatory

Mandatory Mandatory Mandatory Mandatory

N/A

N/A

Optional

N/A

N/A

N/A

N/A

N/A

N/A

N/A

N/A

N/A

N/A

N/A

Optional

N/A

N/A

N/A

N/A

N/A

N/A

N/A5

Optional 5

Optional 5

N/A

N/A

Optional

N/A

N/A

N/A

N/A

N/A

N/A

N/A

N/A

N/A

Mandatory Mandatory

Mandatory Mandatory

Mandatory Mandatory

Mandatory Mandatory

Mandatory Mandatory

Mandatory Mandatory

Mandatory Mandatory

Mandatory Mandatory

Mandatory Mandatory

Mandatory Mandatory

Mandatory Mandatory

Mandatory Mandatory

5

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