Intel cPCI-7200 Benutzerhandbuch
22
• Registers Format
3.6 8254 Timer Registers (BASE + 0)
The 8254 timer/ counter IC occupies 4 I/O address. Users can refer to
Tundra's or Intel's data sheet for a full description of the 8254 features. You
can download the 8254 data sheet from the following web site:
Tundra's or Intel's data sheet for a full description of the 8254 features. You
can download the 8254 data sheet from the following web site:
http://support.intel.com/support/controllers/peripheral/231164.htm or
http://www.tundra.com (for Tundra’s 82C54 datasheet.)
Address
Read
Write
Base + 0
Counter 0
Counter 0
Base + 4
Counter 1
Counter 1
Base + 8
Counter 2
Counter 2
Base + C
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CLK Control CW0