For more details, please see ourCookie Policy.


Ethernet Switch

Reply
Contributor
Posts: 21
Registered: ‎07-05-2016
Accepted Solution

JTAG Signal Levels...

Hi,

I'm using both the BCM53286 SoC and a BCM5482S GPHY in our system and wish to daisychain together the JTAG ports to allow access via one JTAG connector.

What are the signals levels for the JTAG ports on each of these devices?

Is the TDO output on either device a +1V2, +2V5 or +3V3 signal?

Are TDI, TCK, TMS, TRST inputs +3V3 tolerant?

Thanks,

Darren

Highlighted
Broadcom
Posts: 300
Registered: ‎02-15-2016

Re: JTAG Signal Levels...

Hi Darren,

The JTAG pins are 2.5V IO pins and are 3.3V tolerant.

Thanks,

Ryan

Contributor
Posts: 21
Registered: ‎07-05-2016

Re: JTAG Signal Levels...

Thanks Ryan!

Darren

Join the Broadcom Support Community

Get quick and easy access to valuable resources across the Broadcom Community Network.