MSP-GANG: About single wires for SBW connection between MSP-GANG and target device

Tao_2199

Genius 5740 points

Part Number: MSP-GANG
Other Parts Discussed in Thread: MSP430FR5738, MSP430FR5959

Hello,

About single wires for SBW connection between MSP-GANG and target device

Regarding to single wires for SBW connection, my customer has some question.

They extend JTAG cable with single wires (about 10cm) as following.

They will use it for mass production at assembly factory.

MCU: MSP430FR5738

Target MCU board power : External supply

SBW I/F : Speed →Fast , SBW DATA → via TDOI

(Question)

Is there any problem about single wires connection?

Or they should connect it with twisted-pairs?

(MSP-GANG manual page 135 session 6.2)

･TDOI、Vcc　→ twisted-pair?

･TCK、GND　→ twisted-pair?

･Vcc、GND　→ twisted-pair?

Regards,

Tao_2199

over 4 years ago

0 Dennis Lehman over 4 years ago

TI__Guru 67911 points

Hello Tao_2199

Please refer your customer to the MSP Gand Programmer User Guide, section 6.2

0 zrno soli over 4 years ago

Guru 34453 points

I am using 8 MHz SBW on 60 cm flat (not twisted pair) cable with FRAM target devices (no cap on reset pin) without issues. I also tested it (SBW) on longer cables without issues. Not using MSP-GANG, but anyway I don't see how 30 cm can be a problem for SBW.

d:\msp>flash -f msp430fr5959_red_blink.txt -w -v

File: "msp430fr5959_red_blink.txt"
@4400 64512 bytes
Total Size: 64512 bytes

Found master device at COM14

Get Device
# JTID Fuse Device Core Hard Soft LotWafer DieX DieY
2 99 OK 6581 1106 30 30 E1271D07 2F00 1900
3 99 OK 6181 1106 30 30 C1F22407 2B00 2200

Write 271 ms 231,7 KB/s

Verify 296 ms 212,6 KB/s

Release Device

Total Time: 672 ms

d:\msp>

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MSP-GANG: About single wires for SBW connection between MSP-GANG and target device