FT200XD Datasheet, PDF (23/42 Pages) Future Technology Devices International Ltd. – FT200XD USB I2C SLAVE IC Datasheet Version 1.3

FT200XD USB I2C SLAVE IC Datasheet
Version 1.3
Document No.: FT_000628 Clearance No.: FTDI# 265
 Combined messages, where a master issues at least two reads and/or writes to one or more
slaves
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 I²C address of the FT200XD is stored in the device internal MTP memory.
Please refer to the I²C specification for more information on the protocol.
8.2 USB Battery Charging Detection
A recent addition to the USB specification
(http://www.usb.org/developers/devclass_docs/BCv1.2_011912.zip) 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 FT200XD 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.
VBUS
3V3OUT
VBUS 3V3OUT
VBUS 3V3OUT
CN USB
VBUS
D-
D+
ID
GND
1
2
3
4
5
600R/2A
27R
27R
10nF
3V3OUT
DM
DP
RESET#
N.F.
0R
SLD GND
GND
0.1uF
GND
CBUS0
FT200XD
GND
0.1uF
GND
BCD
0.1uF
GND
VBUS VBUS
3V3OUT VBUS
3V3OUT
VBATT
0.1uF
4.7uF
GND GND
10K 10K
1
2
3
4
5
CHRG
VCC
FAULT
TIMER
GND
0.1uF
10K
ACPR
BAT
SHDN
PROG
NTC
10
9
8
7
6
LTC4053EDD
2K2
BCD
NTC
1K5
1+
NCT
-
TB3.5mm
1uF
1R
GND
EEPROM Setting
X-Chip Pin
CBUS0
Function
BCD
GND
GND
Battery Options
Battery Charger Enable X
Force Power Enable
De-acticate Sleep
GND GND
VBUS
GND GND
1A when connected to a dedicated charger port
0A when enumerated
0A when not enumerated and not in sleep
0A when in sleep
NTC
4K32 1%
JUMPER-2mm
JP1
SIP-3
GND
JP1
NCT Available
1-2 NCT Enabled
2-3 NCT Disabled (Default)
Figure 8.2 USB Battery Charging Detection
To use the FT200XD 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
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