FT201XQ-R FTDI, FT201XQ-R Datasheet - Page 26

• Manufacturer Part Number: FT201XQ-R
• Description: USB Interface IC USB to I2C IC QFN-16
• Manufacturer: FTDI

Specifications of FT201XQ-R

• Rohs: yes
• Product: USB 2.0
• Data Rate: 12 Mbps, 480 Mbps
• Interface Type: I2C, USB
• Operating Supply Voltage: 2.97 V to 5.5 V
• Operating Supply Current: 6.4 mA to 8.65 mA
• Maximum Operating Temperature: + 85 C
• Mounting Style: SMD/SMT
• Package / Case: QFN-16
• Tradename: X-Chip

In a combined message, each read or write begins with a START and the slave address. After the first
START, these are also called repeated START bits; repeated START bits are not preceded by STOP bits,
which is how slaves know the next transfer is part of the same message.
The
Please refer to the
8.2 USB Battery Charging Detection
A recent addition to the USB specification (
is to allow for additional charging profiles to be used for charging batteries in portable devices. These
charging profiles do not enumerate the USB port of the peripheral. The FT201X device will detect that a
USB compliant dedicated charging port (DCP) is connected. Once detected while in suspend mode a
battery charge detection signal is provided to allow external logic to switch to charging mode as opposed
to operation mode.
To use the FT201X with battery charging detection the CBUS pins must be reprogrammed to allow for the
BCD Charger output to switch the external charger circuitry on. The CBUS pins are configured in the
internal MTP memory with the free utility FT_PROG. If the charging circuitry requires an active low signal
to enable it, the CBUS pin can be programmed to BCD Charger# as an alternative.
When connected to a USB compliant dedicated charging port (DCP, as opposed to a standard USB host)
the device USB signals will be shorted together and the device suspended. The BCD charger signal will
bring the LTC4053 out of suspend and allow battery charging to start. The charge current in the example
below is 1A as defined by the resistance on the PROG pin.
Figure 8.2 USB Battery Charging Detection (1- pin)
0.1uF
VBUS
GND
EEPROM Setting
X-Chip Pin

I
CBUS0
2
VBUS
CN USB
GND
SLD
C
4.7uF
VBUS
Combined messages, where a master issues at least two reads and/or writes to one or more
slaves
address of the FT201X is stored in the device internal MTP
GND
GND
D+
D-
ID
0R
N.F.
1
2
3
4
5
Function
0.1uF
VBUS
GND
GND
BCD
10nF
600R/2A
VBUS
GND
I
27R
27R
Copyright © 2013 Future Technology Devices International Limited
2
0.1uF
C
Battery Charger Enable
3V3OUT
1
2
3
4
5
Battery Options
De-acticate Sleep
GND
Force Power Enable
specification for more information on the protocol.
VCC
GND
CHRG
FAULT
TIMER
DM
DP
3V3OUT
RESET#
GND
VBUS
LTC4053EDD
ACPR
SHDN
PROG
BAT
NTC
GND
X
3V3OUT
10
9
8
7
6
JUMPER-2mm
CBUS0
GND
2K2
FT201X
VBUS
4K32 1%
GND
1K5
BCD
NTC
http://www.usb.org/developers/devclass_docs/BCv1.2_011912.zip
JP1
SIP-3
BCD
NTC
0A when in sleep
0A when enumerated
0.1uF
0A when not enumerated and not in sleep
1A when connected to a dedicated charger port
VBUS
GND
VBATT
GND
GND
1R
1uF
3V3OUT
FT201X USB I2C SLAVE IC Datasheet
GND
GND
1-2
2-3
JP1
NCT Available
0.1uF
NCT Enabled
NCT Disabled (Default)
TB3.5mm
1
Document No.: FT_000627 Clearance No.: FTDI# 264
+
-
NCT
memory
.
Version 1.3
)
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