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Copyright © 2010 Future Technology Devices International Limited

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Document Reference No.: FT_000166

V2DIP2-64 VNCL2-64Q Development Module Datasheet Version 1.01

Clearance No.: FTDI# 155

3.8 Debugger Interface

The purpose of the debugger interface is to provide access to the VNC2 silicon/firmware debugger. The

debug interface can be accessed via the appropriate pin on the DIL connector or more easily, it can be

accessed by connecting a debug module to the J3 connector. This debug module will give access to the

debugger through a USB connection to a PC via the Integrated Development Environment (IDE). The IDE

is a graphical interface to the VNC2 software development tool-chain and gives the following debug

capabilities through the debugger interface:

Flash Erase, Write and Program.

Application debug - application code can have breakpoints, be single stepped and can be halted.

Detailed internal debug - memory and register read/write access.

The Debugger Interface, and how to use it, is further described in the following applications Note

Vinculum-II Debug Interface Description

3.8.1 Signal Description - Debugger Interface

Table 3.10 shows the signals and pins description for the Debugger Interface pin header J3

Pin No.

Name

Name

On PCB

Type

Description

J3-1

IO0

DBG

I/O

Debugger Interface

J3-2

-

[Key]

-

Not connected. Used to make sure that the debug

module is connected correctly.

J3-3

GND

GND

PWR

Module ground supply pin

J3-4

RESET#

RST#

Input

Can be used by an external device to reset the

VNCL2. This pin is also used in combination with

PROG# and the UART interface to program

firmware into the VNC2.

J3-5

PROG#

PRG#

Input

This pin is used in combination with the RESET#

pin and the UART interface to program firmware

into the VNC2.

J3-6

5V0

VCC

PWR Input

5.0V module supply pin. This pin can be used to

provide the 5.0V input to the V2DIP2-64 from the

debugger interface when the V2DIP2-64 is not

powered from the USB connector (VBUS) or the

DIL connector pins J1-12, J1-13, J1-19 and J3-6.

Table 3.10 - Signal Name and Description – Debugger Interface