pc87311a National Semiconductor Corporation, pc87311a Datasheet - Page 13

• Manufacturer Part Number: pc87311a
• Description: Pc87311a/pc87312 Superi/otm Ii/iii Floppy Disk Controller With Dual Uarts, Parallel Port, And Ide Interface
• Manufacturer: National Semiconductor Corporation

2 0 Configuration Registers
4
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
1
1
1
1
1
1
1
1
1
1
Configuration Pins (CFGn)
3
0
0
0
0
0
0
0
0
1
1
1
1
1
1
1
1
0
0
0
0
0
0
0
0
1
1
2
0
0
0
0
1
1
1
1
0
0
0
0
1
1
1
1
0
0
0
0
1
1
1
1
0
0
TABLE 2-1 Default Configurations Controlled by Hardware
1
0
0
1
1
0
0
1
1
0
0
1
1
0
0
1
1
0
0
1
1
0
0
1
1
0
0
(Continued)
0
0
1
0
1
0
1
0
1
0
1
0
1
0
1
0
1
0
1
0
1
0
1
0
1
0
1
13
FER
PTR
FAR
FAR
FAR
FAR
FAR
FAR
FER
PTR
FAR
FAR
FAR
FAR
FAR
FAR
FER
PTR
FAR
FAR
FAR
FAR
FER
PTR
FAR
FAR
FAR
FAR
FER
PTR
FAR
FAR
FAR
FAR
FER
PTR
FAR
FAR
(Hex)
Data
e
e
e
e
e
e
e
e
e
e
e
e
e
e
e
e
e
e
e
e
e
e
e
e
e
e
e
e
e
e
e
e
e
e
e
e
e
e
4F CF
00
10
11
11
39
24
38
4B CB
00
00
01
01
09
08
08
0F
00
10
11
39
24
49 C9
00
00
01
01
00
07
00
10
11
39
24
47 C7
00
10
11
FDC IDE UART1 UART2
Power Down Clocks Option
PRI PRI COM1 COM2 LPT2
PRI PRI COM1 COM2 LPT1
PRI SEC COM1 COM2 LPT1
PRI PRI COM3 COM4 LPT1
PRI PRI COM2 COM3 LPT2
PRI SEC COM3 COM4 LPT2
FDC IDE UART1
Power Down Clocks Option
PRI PRI COM1 LPT2
PRI PRI COM1 LPT1
PRI SEC COM1 LPT1
PRI PRI COM3 LPT1
PRI PRI COM3 LPT2
PRI SEC COM3 LPT2
FDC UART1 UART2
Power Clocks Option
PRI COM1 COM2 LPT2
PRI COM1 COM2 LPT1
PRI COM3 COM4 LPT1
PRI COM2 COM3 LPT2
FDC IDE
Power Down Clocks Option
PRI PRI LPT2
PRI PRI LPT1
PRI SEC LPT1
PRI SEC LPT2
UART1 UART2
Power Down Clocks Option
COM1 COM2 LPT2
COM1 COM2 LPT1
COM3 COM4 LPT1
COM2 COM3 LPT2
IDE UART1 UART2
Power Down Clocks Option
PRI COM1 COM2 LPT2
PRI COM1 COM2 LPT1
Activated Functions
ll
PORT
ll
PORT
ll
PORT
ll
ll
PORT
PORT
ll
PORT