UMFT201XA-01 FTDI, UMFT201XA-01 Datasheet - Page 6

• Manufacturer Part Number: UMFT201XA-01
• Description: Interface Development Tools USB to I2C Dev Module for FT201X
• Manufacturer: FTDI
• Type: USB to I2Cr

Specifications of UMFT201XA-01

• Rohs: yes
• Product: Development Modules
• Tool Is For Evaluation Of: FT201XQ
• Interface Type: I2C, USB
• Operating Supply Voltage: 3.3 V
• Dimensions: 30.2 mm x 12.2 mm
• Tradename: X-Chip

CBUS Signal Option
4.3
The following options can be configured on the CBUS I/O pins. These options are all configured in the
internal MTP ROM using the utility software FT_PROG, which can be downloaded from the
www.ftdichip.com. The default configuration is described in
Table 4.2 – CBUS Signal Options
**When in USB suspend mode the outputs clocks are also suspended.
BCD_Charger#
Keep_Awake#
BitBang_WR#
BCD_Charger
BitBang_RD#
VBUS_Sense
Time_Stamp
TX&RXLED#
CLK24MHz
CLK12MHz
CLK6MHz
DRIVE_1
DRIVE_0
PWREN#
I2C_TXE
I2C_RXF
RXLED#
TXLED#
Tristate
SLEEP#
CBUS Signals Options
GPIO
CBUS0, CBUS1, CBUS2,
Available On CBUS
CBUS0 - CBUS5
CBUS0 - CBUS5
CBUS0 - CBUS5
CBUS0 - CBUS5
CBUS0 - CBUS5
CBUS0 - CBUS5
CBUS0 - CBUS5
CBUS0 - CBUS5
CBUS0 - CBUS5
CBUS0 - CBUS5
CBUS0 - CBUS5
CBUS0 - CBUS5
CBUS0 - CBUS5
CBUS0 - CBUS5
CBUS0 - CBUS5
CBUS0 - CBUS5
CBUS0 - CBUS5
CBUS0 - CBUS5
CBUS0 - CBUS5
CBUS0 - CBUS5
CBUS3
Pin
Copyright © 2012 Future Technology Devices International Limited
IO Pad is tri-stated
Output a constant 1
Output a constant 0
Output is low after the device has been configured by USB, then
high during USB suspend mode. This output can be used to control
power to external logic P-Channel logic level MOSFET switch.
NOTE: This function is driven by an open-drain to ground with no
internal pull-up, this is specially designed to aid battery charging
applications. UMFT201XE connects an on-board 47K pull-up on each
CBUS and DBUS signal.
Transmit data LED drive – pulses low when transmitting data via
USB.
Receive data LED drive – pulses low when receiving data via USB.
LED drive – pulses low when transmitting or receiving data via USB.
Goes low during USB suspend mode. Typically used to power down
an external TTL to RS232 level converter IC in USB to RS232
converter designs.
24 MHz Clock output.**
12 MHz Clock output.**
6 MHz Clock output.**
CBUS bit bang mode option. Allows up to 4 of the CBUS pins to be
used as general purpose I/O. Configured individually for CBUS0,
CBUS1, CBUS2 and CBUS3 in the internal MTP ROM. A separate
application note,
(
bang mode.
Battery charge Detect, indicates when the device is connected to a
dedicated battery charger host. Active high output.
Inverse of BCD Charger
Synchronous and asynchronous bit bang mode WR# strobe output.
Synchronous and asynchronous bit bang mode RD# strobe output.
Transmit buffer empty, used to indicate to I2C master device status
of the FT201X transmit buffer
Receive buffer full, used to indicate to I2C master device status of
FT201X receive buffer
Input to detect when VBUS is present.
Toggle signal which changes state each time a USB SOF is received
Active Low input, prevents the chip from going into suspend.
www.ftdichip.com
Document Reference No.: FT_000516
Section
AN232R-01
) describes in more detail how to use CBUS bit
9.
Description
, available from
UMFT201XA Datasheet
Clearance No.: FTDI#
FTDI website
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