max v jtag resistors

ok found the answer:

For MAX V devices, there are weak pull-up resistors for

TDI

and

TMS

, and pull-down

resistors for

TCK

. However, in a JTAG chain, there might be some devices that do not

have internal pull-up or pull-down resistors. In this case, Altera recommends pulling

the

TMS

pin high (through an external 10-k



resistor), and pulling

TCK

low (through an

external 1-k



resistor) during BST or in-system programmability (ISP) to prevent the

TAP controller from going into an unintended state. Pulling-up the

TDI

signal

externally for the MAX V device is optional.