Datasheet

Revised Date:
April 16, 2007
ds_pl2303HXD_v1.1.doc
PL-2303HX (Rev D) Product Datasheet - 14 - Document Version 1.1
5.2 QFN32 Package
Table 5-2 Pin Assignment & Description (QFN32)
Pin # Name Type Description
1 VDD_325 P
RS232 VDD. The power pin for the serial port signals.
When the serial port is 3.3V, this should be 3.3V. When
the serial port is 2.5V, this should be 2.5V. The range can
be from 1.8V~3.3V.
2 RXD I
(2)
Serial Port (Received Data)
3 RI_N B
(2)
Serial Port (Ring Indicator); or Auxiliary General Purpose
I/O Port when enabled
(6)
.
4 GND P Ground
5 VDD_33 P Primary Power (3.3V)
6 DSR_N B
(2)
Serial Port (Data Set Ready); or Auxiliary General Purpose
I/O Port when enabled
(6)
.
7 DCD_N B
(2)
Serial Port (Data Carrier Detect); or Auxiliary General
Purpose I/O Port when enabled
(6)
.
8 CTS_N B
(2)
Serial Port (Clear to Send); or Auxiliary General Purpose
I/O Port when enabled
(6)
.
9 SHTD_N O
(3)
RS232 Transceiver Shut Down Control
10 GP3 I/O Auxiliary GPIO Pin 3 (Default output high mode)
(5)
11 GP2 I/O Auxiliary GPIO Pin 2 (Default output high mode)
(5)
12 NC - No Connection
13 NC - No Connection
14 DP B USB Port D+ signal
15 DM B USB Port D- signal
16 NC - No Connection
17 VO_33 P Regulator Power Output, 3.3V
18 GND P Ground
19 RESET_N I External System Reset (Active Low)
20 VDD_5 P USB Port V
BUS
, 5V Power.
21 NC - No Connection
22 GP0 B
(4)
General Purpose I/O Pin 0
23 GP1 B
(4)
General Purpose I/O Pin 1
24 NC - No Connection
25 GND P Ground
26 TEST I Test mode control
27 Reserved - Reserved pin (Must be floating)
28 NC - No Connection
29 NC - No Connection
30 TXD O
(1)
Serial Port (Transmitted Data)
31 DTR_N O
(1)
Serial Port (Data Terminal Ready)
32 RTS_N O
(1)
Serial Port (Request To Send)
IC Bottom PAD P Connects to VO_33 (Regulator Power Output, 3.3V)
Notes:
(1)
– Tri-State, Output Pad. Level and Driving Capability decided by VDD_325.
(2) – Tri-State, CMOS Input/Output Pad with level shifter. Level and Driving Capability decided by VDD_325.
(3) – CMOS Output Pad.
(4) – Tri-State, CMOS Input/Output Pad. (Default mode: Input)
(5) – Default output high mode; do not connect to ground.
(6) – Enabling Auxiliary GPIO requires special customized driver.