VT82C686B

Manufacturer Part NumberVT82C686B
ManufacturerETC-unknow
VT82C686B datasheet
 
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Index EE – Serial Port Configuration (00h) ................... RW
7
Serial Port 2 High Speed Enable
0
Disable ...................................................default
1
Enable
6
Serial Port 1 High Speed Enable
0
Disable ...................................................default
1
Enable
5-3
Serial Port 2 Mode
000 Standard ................................................default
001 IrDA (HIPSIR)
010 Amplitude shift keyed IR @ 500KHz
011 -reserved-
1xx -reserved-
2
Serial Port 2 Half Duplex
0
Disable ...................................................default
1
Enable
1
Serial Port 2 TX Output Inversion
0
Disable ...................................................default
1
Enable
0
Serial Port 2 RX Input Inversion
0
Disable ...................................................default
1
Enable
Index EF – Power Down Control (00h) ........................... RW
7-6
Reserved
........................................ always reads 0
5
Clock Power Down
0
Normal operation ...................................default
1
Power Down
4
Parallel Port Power Down
0
Normal operation ...................................default
1
Power Down
3
Serial Port 2 Power Down
0
Normal operation ...................................default
1
Power Down
2
Serial Port 1 Power Down
0
Normal operation ...................................default
1
Power Down
1
FDC Power Down
0
Normal operation ...................................default
1
Power Down
0
All Power Down
0
Normal operation ...................................default
1
Power Down All
Revision 1.71 June 9, 2000
Index F0 – Parallel Port Control (00h) ........................... RW
7
PS2 Type BiDirectionl Parallel Port
0
Disable................................................... default
1
Enable
6
EPP Direction by Register not by IOW
0
Disable................................................... default
1
Enable
5
EPP+ECP
0
Disable................................................... default
1
Enable
4
EPP Version
0
Version 1.9 ............................................ default
1
Version 1.7
3-0
Reserved
........................................always reads 0
Index F1 – Serial Port Control (00h) .............................. RW
7-6
Reserved
........................................always reads 0
5
IR Loop Back
0
Disable................................................... default
1
Enable
4
Serial Port 2 Power-Down State
0
Normal................................................... default
1
Tristate output in power down mode
3
Serial Port 1 Power-Down State
0
Normal................................................... default
1
Tristate output in power down mode
2
IR Dedicated Pin (IRTX/IRRX) Select
0
IRTX / IRRX Output from Serial Port 2...... def
1
Function 0 Rx76[5] = 0:
IRRX output from dedicated pin D12
IRTX output from dedicated pin E12
1-0
Reserved
........................................always reads 0
Index F2 – Test Mode (Do Not Program) ....................... RW
Index F4 – Test Mode (Do Not Program) ....................... RW
-46-
Register Descriptions - Super-I/O I/O Ports
VT82C686B