参数资料
型号: ELANSC310
英文描述: Elan SC310 - Elan SC310 Single-Chip. 32-Bit. PC/AT Microcontroller
中文描述: 义隆SC310 -伊兰SC310单芯片。 32位。的PC / AT单片机
文件页数: 79/119页
文件大小: 1167K
代理商: ELANSC310
62
lanSC310 Microcontroller Data Sheet
PREL IMINARY
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.
Table 32.
14-MHz Clock Source
Table 31.
XT Keyboard Pin Description
PC/XT Keyboard Pin
Name
Pin Type
PC/XT Keyboard Pin
Description/Notes
Default Pin
Name/Function
Pin No.
[XTDAT]
I/O
Keyboard data
8042CS
75
[XTCLK]
I/O
Keyboard clock
SYSCLK
45
14-MHz
Pin Name
Pin Type
14-MHz Clock Pin
Description/Notes
Default Pin
Name/Function
Pin No.
[X14OUT]
O
14.336-MHz Clock
AFDT
80
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