PL2303 Datasheet, PDF (6/11 Pages) List of Unclassifed Manufacturers – PL-2303 USB to RS-232 Bridge Controller Product Datasheet

Release Date:
July, 2002
ds_pl2303_v14
Pin
Name
No.
22 TRI_STATE
23 LD_MD/
SHTD
Type
Description
I Tri-State
This pin is referred after reset.
High: RS-232 output inactive during Suspend.
Low: RS-232 output tri-state during Suspend.
I/O Load Mode/SHTD
This pin is input during reset. Pull high with a 220K resistor to
indicate the heavy load USB device (500mA). Pull down with a
220K resistor to indicate the light load USB device 100mA).
24 VDD_PLL
25 GND_PLL
26 PLL_TEST
27 OSC1
28 OSC2
After reset, this pin becomes output. It output the inverse of
SHTD_N.
P 5V power for PLL
P Ground for PLL
I PLL test mode control
I Crystal oscillator input
O Crystal oscillator output
Type: I – Input signal O – Output signal I/O – Bi-directional signal
P – Power/Ground
Supported Data Formats and Programmable Baud Rate Generator
The PL2303 USB-to-RS232 bridge controller supports versatile data formats and has a programmable baud
rate generator. The supported data formats are shown on Table 2. The programmable baud rate generator
supports baud rates up to 1.2M bps as shown in Table 3.
Table 2. Supported Data Formats
Stop bits
Parity type
Data bits
Description
1
1.5
2
None
Odd
Even
Mark
Space
5, 6, 7, 8, or 16
PL-2303 Product Datasheet
-6-
Document Revision 1.3