CHAPTER 5
SWITCH AND JUMPER SETTING

The Plug and Play features let hardware configuration for IRQ and I/O address is detected by BIOS automatically, so that it need not switch and jumper setting. The on board switch can be used to identify card number by the users (if you do not set the switch, the PnP BIOS will assign card number automatically).

        JP2 (Jumper 2)

           Select external clock or internal clock.

        SW1 (Switch 1)    

      Identifies card number.

Do not set up jumpers and switch under power on condition, otherwise it may defective your computer system.


1. Select External Clock or Internal Clock

       

The JP2 is used to select external clock or internal clock; to select external clock, please short pin 1 and 2, to select internal clock, please short pin 2 and 3. When internal clock is selected, the communication speed is divided by 4.

Pin
 Mode
Short 1,2
 External Clock
Short 2,3 Internal Clock

 a. Dual Speed Board for Internal Clock

       

The clock rate is 7.3728MHZ. The baud rate speed up to 115200.  Under this configuration, the user setting baud rate is the same as RS232 baud rate. We list in the following.

Original
 RS232 on board baud rate
50
 50
300
 300
600
 600
1200
 1200
2400
 2400
4800
 4800
9600
 9600
19.2K
 19.2K
38.4K
 38..4K
57.6K
 57.6K
115.2K 115.2K

 b. Dual Speed Board for External Clock

       

The clock rate is 7.3728MHZ. The baud rate speed up to 230K. Under this configuration, the user setting baud rate maps to on board RS232 baud rate are list in the following. Please note that, you device driver may report original baud rate, however the speed of communication line is quadruple speed.
Original
 RS232 on board baud rate
50
 100
300
 600
600
 1200
1200
 2400
2400
 4800
4800
 9600
9600
 19.2K
19.2K
 38.4K
38.4K
 76.8K
57.6K
 115.2K
115.2K 230.4K

c. Octal Speed for Internal Clock

       

The clock rate is 14.7456MHZ. The baud rate speed up to 230K. Under this configuration, the user setting baud rate maps to on board RS232 baud rate are list in the following. Please note that, you device driver may report original baud rate, however the speed of communication line is dual speed.

Original
 RS232 on board baud rate
50
 100
300
 600
600
 1200
1200
 2400
2400
 4800
4800
 9600
9600
 19.2K
19.2K
 38.4K
38.4K
 76.8K
57.6K
 115.2K
115.2K 230.4K
 
d. Octal Speed for Eternal Clock

       

The clock rate is 14.7456MHZ. The baud rate speed up to 1M. Under this configuration, the user setting baud rate maps to on board RS232 baud rate are list in the following. Please note that, you device driver may report original baud rate, however the speed of communication line is octal speed.

Original
 RS232 on board baud rate
50
 400
300
 2400
600
 4800
1200
 9600
2400
 19.2 K
4800
 38.6 K
9600
 76.8 K
19.2K
 153.6K
38.4K
 230.4K
57.6K
 460.8K
115.2K 921.6K


2. Card Identifier



The switch is used to identify card number, default setting is card 15, and there are two methods to set the card number:

a. PnP mode
Just plug in PCCOM PCI bus 8 port adapter into PCI slot, the PCI BIOS will allocate I/O address to each adapter automatically and assign card number start from 0 to each adapter. You may set any card number at PnP mode, and you need use software tools to distinguish port id. Almost all of the operating systems run at PnP mode.

b. manual mode
Set card number by card identifier switch, the PCI BIOS will assign pre-allocated I/O address to each adapter. Please set different card number to each adapter (do not duplicate card number setting).


The card number starts from 0 to 15.