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COM-2GY Datasheet(PDF) 3 Page - Contec Co., Ltd

Part No. COM-2GY
Description  F&eIT Series RS-232C 2ch Communication Module
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Maker  CONTEC [Contec Co., Ltd]
Homepage  https://www.contec.com/
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COM-2GY Datasheet(HTML) 3 Page - Contec Co., Ltd

   
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Ver.1.02
COM-2(FIT)GY
3
This product can operate in two modes: the compatible mode,
in which this product, when connected to CONTEC’s
microcontroller unit, acts as a standard serial port; and the
enhanced mode, in which this product operates under
CONTEC’s unique control method.
Before building a system
using this product, a working understanding of the features of
these modes may be in order.
CAUTION
To use four or more channels of COM in the Windows
environment, select the enhanced mode, and then use the
COM-DRV(W32) driver.
(Ex.: Device ID-No. 04h, 07h, 0Ch)
The I/O address and IRQ that can be configured differs
according to the connection source microcontroller. For the
CPU-SBxx Series, refer to Table 1. For the BX-300 Series,
refer to Table 2.
Compatible Mode
This product can use two channels as standard serial ports.
Channels CH0 of this product can be assigned to COM3, and
CH1 to COM4.
In the compatible mode, this product uses one interrupt level
per channel.
When adding two channels, you need to ensure that at least
two interrupt levels are available.
For I/O addresses, the
addresses that are assigned to the standard serial ports can be
used.
Because these addresses can are treated as standard
serial ports, they can be accessed by using commonly
available driver software that can handle standard serial ports.
Enhanced Mode
The enhanced mode operates this product by using CONTEC's
unique control method.
The enhanced mode controls two channels at one interrupt
level.
Therefore, the channels can be operated even when
only one interrupt level is available.
For I/O addresses,
CONTEC-designated addresses must be used.
When the COM-DRV(W32) driver is used, it can be used in the
same way as a standard serial port.
CAUTION
When using it in the OS other than Windows, user needs to
create the device driver for enhanced mode.
I/O Address
CH0
CH1
ID No.
Function
I/O address
(h)
Interrupt
level
Function
I/O address
(h)
Interrupt
level
0
COM3
03E8 - 03EF
IRQ5
COM4
02E8 - 02EF
IRQ7
1
COM3
03E8 - 03EF
IRQ5
COM4
02E8 - 02EF
Not used
2
COM3
03E8 - 03EF
Not used
COM4
02E8 - 02EF
IRQ7
3
COM3
03E8 - 03EF
Not used
COM4
02E8 - 02EF
Not used
4
Enhanced
01A0 - 01A7
IRQ5
Enhanced
01A8 - 01AF
IRQ5
5
Enhanced
01A0 - 01A7
IRQ7
Enhanced
01A8 - 01AF
IRQ7
6
Enhanced
02A0 - 02A7
IRQ5
Enhanced
02A8 - 02AF
IRQ5
7
Enhanced
02A0 - 02A7
IRQ7
Enhanced
02A8 - 02AF
IRQ7
8
Enhanced
9800 - 9807
IRQ9
Enhanced
9808 - 980F
IRQ9
9
Enhanced
9820 - 9827
IRQ5
Enhanced
9828 - 982F
IRQ7
A
Enhanced
9840 - 9847
IRQ7
Enhanced
9848 - 984F
IRQ9
B
Enhanced
9860 - 9867
Not used
Enhanced
9868 - 986F
Not used
C
Enhanced
0700 - 0707
IRQ9
Enhanced
0708 - 070F
IRQ9
D
Enhanced
0720 - 0727
IRQ7
Enhanced
0728 - 072F
IRQ7
E
Reserved
Reserved
Reserved
Reserved
Reserved
Reserved
F
Reserved
Reserved
Reserved
Reserved
Reserved
Reserved
I/O Address(When connected to the BX-300 Series)
CH0
CH1
ID No.
Function
I/O address
(h)
Interrupt
level
Function
I/O address
(h)
Interrupt
level
0
COM3
03E8 - 03EF
IRQ5
COM4
02E8 - 02EF
IRQ7
1
COM3
03E8 - 03EF
IRQ5
COM4
02E8 - 02EF
Not used
2
COM3
03E8 - 03EF
Not used
COM4
02E8 - 02EF
IRQ7
3
COM3
03E8 - 03EF
Not used
COM4
02E8 - 02EF
Not used
4
Enhanced
01C0 - 01C7
IRQ5
Enhanced
01C8 - 01CF
IRQ5
5
Enhanced
01C0 - 01C7
IRQ7
Enhanced
01C8 - 01CF
IRQ7
6
Enhanced
02C0 - 02C7
IRQ5
Enhanced
02C0 - 02C7
IRQ5
7
Enhanced
02C0 - 02C7
IRQ7
Enhanced
02C0 - 02C7
IRQ7
8
Enhanced
9800 - 9807
IRQ10
Enhanced
9808 - 980F
IRQ10
9
Enhanced
9820 - 9827
IRQ5
Enhanced
9828 - 982F
IRQ7
A
Enhanced
9840 - 9847
IRQ7
Enhanced
9848 - 984F
IRQ9
B
Enhanced
9860 - 9867
Not used
Enhanced
9868 - 986F
Not used
C
Enhanced
0700 - 0707
IRQ10
Enhanced
0708 - 070F
IRQ10
D
Enhanced
0720 - 0727
IRQ7
Enhanced
0728 - 072F
IRQ7
E
Reserved
Reserved
Reserved
Reserved
Reserved
Reserved
F
Reserved
Reserved
Reserved
Reserved
Reserved
Reserved
CAUTION
Please use it excluding Device ID No. 8, 9, A, B when using
in the Windows environment.
The module uses the XR16C2850 (Exar Corporation) upward
compatible with the 16550 UART.
For details on the internal resisters of the XR16C2850 and its
control, refer to the XR16C2850 data sheet.
In enhanced
mode, “starting I/O address + 1Fh” is used as an interrupt
vector resister.
I/O Ports
Starting I/O
D7
D6
D5
D4
D3
D2
D1
D0
address +0h
+1h
+2h
+3h
+4h
+5h
+6h
+7h
Channel 0 resister
+8h
+9h
+Ah
+Bh
+Ch
+Dh
+Eh
+Fh
Channel 1 resister
+1Fh
Interrupt vector resister
CAUTION
Each port must be accessed in bytes to conform to device
specifications.
Non-byte access to any port is not allowed (such as word
access or doubleword access).
I/O Ports and Registers
Compatible and Enhanced Modes


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