ELANSC310 AMD [Advanced Micro Devices], ELANSC310 Datasheet - Page 62

• Manufacturer Part Number: ELANSC310
• Description: Single-Chip, 32-Bit, PC/AT Microcontroller
• Manufacturer: AMD [Advanced Micro Devices]

PC/XT Keyboard
The PC/XT keyboard functionality is enabled via bit 3 of PMU Control 3 Register, Index ADh.
14-MHz Clock Source
Setting bit 3 of Miscellaneous 3 Register, Index BAh, enables the 14.336 MHz clock signal on the parallel port pin
AFDT.
62
[XTDAT]
[XTCLK]
[X14OUT]
PC/XT Keyboard Pin
Pin Name
14-MHz
Name
Pin Type
O
Pin Type
14.336-MHz Clock
I/O
I/O
Élan™SC310 Microcontroller Data Sheet
Table 31. XT Keyboard Pin Description
Keyboard data
Keyboard clock
Table 32. 14-MHz Clock Source
P R E L I M I N A R Y
Description/Notes
14-MHz Clock Pin
PC/XT Keyboard Pin
Description/Notes
8042CS
SYSCLK
AFDT
Name/Function
Name/Function
Default Pin
Default Pin
Pin No.
Pin No.
80
75
45