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Copyright © 2010 Future Technology Devices International Limited

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Document Reference No.: FT_000164

V2DIP2-32 VNCL2-32Q Development Module Datasheet Version 1.01

Clearance No.: FTDI# 151

When FIFO_WR# goes low FIFO_TXE# flag will always go high. FIFO_TXE# goes low again only when

there is still space for data to be written in to the module.

3.7 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 J2-10 pin on the DIL connector or, more easily, it can be

accessed by connecting a VNC2_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

3.7.1 Signal Description - Debugger Interface

Table 3.8 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 V2DIP2-32 from the

debugger interface when the V2DIP2-32 is not

powered from the USB connector (VBUs) or the

DIL connector pins J1-1 and J3-6.

Table 3.8 - Signal Name and Description – Debugger Interface