Release Date:

July, 2002

ds_pl2303_v14

PL-2303 Product Datasheet

- 7 -

Document Revision 1.3

Table 3. Baud Rate Setting

dwDTERate

Baud Rate

0012C000h

1228800

000E1000h

921600

00096000h

614400

00070800h

460800

00038400h

230400

0001C200h

115200

0000E100h

57600

00009600h

38400

00007080h

28800

00004B00h

19200

00003840h

14400

00002580h

9600

00001C20h

7200

000012C0h

4800

00000E10h

3600

00000960h

2400

00000708h

1800

000004B0h

1200

00000258h

600

0000012Ch

300

00000096h

150

0000004Bh

75

External EEPROM and Device Configuration

PL-2303 allows storing the configuration data in an external EEPROM. After reset, the first two bytes of

EEPROM are checked. If the value is 067Bh, the EEPROM is valid and the contents of the EEPROM are

loaded as the chip’s default parameters. Otherwise, the chip’s default setting is used. The content of

EEPROM is shown in Table 4 below.

The Device Configuration Register is used to control some vendor-specific functions. The meaning of each

bit in Device Configuration Register is shown in Table 5. Reserved and unused pins always set to the default

value.

Table 4. EEPROM Content

Bytes

Name

Description

1:0

EECHK

When the EEPROM is programmed, these two bytes is configured as 067B.

After reset, they will be checked for the value. If matched, the following

information will be loaded as the default parameters.

3:2

VID

USB Vendor ID

5:4

PID

Product ID

7:6

RN

Release number (BCD)

10:8

DCR

Device Configuration Register