Subversion Repositories OpenARM Single-board Computer

INVERTER, HEX SCHMITT

http://www.interfacebus.com/Design_Connector_JTAG_Bus.html

page 374 - user.manual.lpc3180.01.pdf

Table 418. Debug pins on LPC3180/01

Pin name        Description                 Alternate function      I/O type        Reset state         Pin detail

JTAG1_TCK       ARM Jtag clock              -                       I               Input                -[1]

JTAG1_RTCK      ARM Jtag return clock       -                       O               Low                  -

JTAG1_NTRST     ARM Jtag reset              -                       I               Input                pullup[2]

JTAG1_TMS       ARM Jtag mode select        -                       I               Input                pullup

JTAG1_TDI       ARM Jtag data in            -                       I               Input                pullup

JTAG1_TDO       ARM Jtag data out           -                       O               Low                  -

Total pins: 6

[1]   This pin has a pullup on the LPC3180.

[2]   This pin has a pulldown on the LPC3180.

[3]   General note: Inputs from JTAG emulators may have strong drivers. It is recommended to add termination resistors on the PCB.