FT201XQ-R FTDI, FT201XQ-R Datasheet - Page 14

• 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

FT201X USB I2C SLAVE IC Datasheet
Version 1.3
Document No.: FT_000627 Clearance No.: FTDI# 264
input receiver and two single ended input receivers provide USB data in, Single-Ended-0 (SE0) and USB
reset detection conditions respectfully. This function also incorporates a 1.5kΩ pull up resistor on USBDP.
The block also detects when connected to a USB power supply which will not enumerate the device but
still supply power and may be used for battery charging.
USB DPLL. The USB DPLL cell locks on to the incoming NRZI USB data and generates recovered clock
and data signals for the Serial Interface Engine (SIE) block.
Internal 12MHz Oscillator - The Internal 12MHz Oscillator cell generates a 12MHz reference clock. This
provides an input to the x4 Clock Multiplier function. The 12MHz Oscillator is also used as the reference
clock for the SIE, USB Protocol Engine and UART FIFO controller blocks.
Clock Multiplier / Divider. The Clock Multiplier / Divider takes the 12MHz input from the Internal
Oscillator function and generates the 48MHz, 24MHz, 12MHz and 6MHz reference clock signals. The 48Mz
clock reference is used by the USB DPLL and the Baud Rate Generator blocks.
Serial Interface Engine (SIE). The Serial Interface Engine (SIE) block performs the parallel to serial
and serial to parallel conversion of the USB data. In accordance with the USB 2.0 specification, it
performs bit stuffing/un-stuffing and CRC5/CRC16 generation. It also checks the CRC on the USB data
stream.
USB Protocol Engine. The USB Protocol Engine manages the data stream from the device USB control
endpoint. It handles the low level USB protocol requests generated by the USB host controller and the
2
commands for controlling the functional parameters of the I
C in accordance with the USB 2.0
specification chapter 9.
2
FIFO RX Buffer (512 bytes). Data sent from the USB host controller to the I
C interface via the USB
2
data OUT endpoint is stored in the FIFO RX (receive) buffer. Data is removed from the buffer to the I
C
2
transmit register under control of the I
C Controller. (Rx relative to the USB interface).
2
FIFO TX Buffer (512 bytes). Data from the I
C receive register is stored in the TX buffer. The USB host
controller removes data from the FIFO TX Buffer by sending a USB request for data from the device data
IN endpoint. (Tx relative to the USB interface).
2
2
I
C Controller. Module to handle the latching in and out of serial data on the I
C interface. Supports up
to 3.4MHz, High Speed Serial Mode.
RESET Generator - The integrated Reset Generator Cell provides a reliable power-on reset to the device
internal circuitry at power up. The RESET# input pin allows an external device to reset the FT201X.
RESET# can be tied to 3V3OUT.
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