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VT8231
Preliminary Revision 0.8
October 29, 1999
-iv-
Table of Contents
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L
IST OF
F
IGURES
FIGURE 1. PC SYSTEM CONFIGURATION USING THE VT8231.........................................................................................6
FIGURE 2. VT8231 BALL DIAGRAM (TOP VIEW) ..................................................................................................................7
FIGURE 3. VT8231 PIN LIST (NUMERICAL ORDER).............................................................................................................8
FIGURE 4. VT8231 PIN LIST (ALPHABETICAL ORDER) ......................................................................................................9
FIGURE 5. STRAP OPTION CIRCUIT.......................................................................................................................................62
FIGURE 6. POWER MANAGEMENT SUBSYSTEM BLOCK DIAGRAM.........................................................................120
FIGURE 8. MECHANICAL SPECIFICATIONS – 376 PIN BALL GRID ARRAY PACKAGE.........................................126
L
IST OF
T
ABLES
TABLE 1. PIN DESCRIPTIONS...................................................................................................................................................10
TABLE 2. SYSTEM I/O MAP.......................................................................................................................................................29
TABLE 3. REGISTERS..................................................................................................................................................................30
TABLE 4. KEYBOARD CONTROLLER COMMAND CODES ..............................................................................................43
TABLE 5. CMOS REGISTER SUMMARY.................................................................................................................................46