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Document Reference No.: FT_000254
VNC2 Debug Module Datasheet Version 1.1
Clearance No.: FTDI# 149
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3.2 Components
Name
Debug Connector
USB Connector
FT232R
2 Port Buffer
Transmit / Receive LED (red)
Power LED (yellow)
FET switch
Board
Designator
CN2
CN1
U1
U3
D1
D2
Q1
Description
Debug connector, 6-way 2mm pitch female connector.
USB Mini-B type connector for connecting to PC.
FTDI FT232R USB to serial converter device.
2 port buffer device used to convert VNC2 debug signal
from single bit bidirectional signal into separate
transmit and receive signals for FT232R. Data flow
direction control on the buffer is carried out by the
TXEN output from the FT232R. TXEN at logic ‘1’ will
indicate transmit.
LED indicating transmit or receive traffic.
LED indicating power status.
FET switch used to switch power on or off on connector
CN2. FET switch is controlled by PWREN# output from
FT232R.
Table 3.1 Component Descriptions
3.3
Debug Interface Description (CN2)
Pin No.
1
2
3
Name
Debug. IF
[Key]
GND
Type
I/O
-
PWR
Description
Debugger Interface.
Not connected.
Module ground supply pin.
Connects to VNC2 RESET# pin. This pin may be
4
RESET#
Output
used in combination with PROG# and the UART
interface to program firmware into the VNC2
device.
Connects to VNC2 PROG# pin. This pin is used in
5
6
PROG#
VCC
Output
5V Output
combination with the RESET# pin and the UART
interface to program firmware into the VNC2
device.
5V output to V2DIP module (from USB bus power).
Table 3.2 Signal Descriptions
Note: Signal levels on pins 1, 4 and 5 have 3.3V signalling levels to match the VNC2 interface.
Copyright ? 2010 Future Technology Devices International Limited
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