FT122 Datasheet, PDF (8/47 Pages) Future Technology Devices International Ltd. – FT122 ENHANCED USB DEVICE CONTROLLER WITH PARALLEL BUS IC Datasheet Version 1.1

Document No.: FT_000647
FT122 ENHANCED USB DEVICE CONTROLLER WITH PARALLEL
BUS IC Datasheet Version 1.1
Clearance No.: FTDI# 313
PIN No.
(TSSOP-
28)
PIN No.
(QFN-
28)
PIN NAME
23
20
VCC
24
21
GND
TYPE DESCRIPTION
P
Power supply (3.3V or 5V)
P
Ground
25
22
DM
AIO USB data signal minus
26
23
DP
AIO USB data signal plus
27
24
BCD_n
O
USB Charger detector output
28
25
A0
I
Address bit for non-multiplexed address/data bus
configuration.
- A0=1 indicates command phase;
- A0=0 indicates data phase.
This pin must be pulled High for multiplexed
address/data bus configuration.
-
29
GND
P
Ground. Die pad for QFN-28 package.
Table 3-1 FT122 Pin Description
Note: a) Pin name with suffix “_n” denotes active low input/output signal.
b) Symbol used for pin TYPE:
OD : Open Drain Output
O
: Output
IO
: Bi-directional Input and Output
I
: Plain input
AIO : Analog Input and Output
P
: Power or ground
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