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CS5530 Datasheet(PDF) 162 Page - National Semiconductor (TI) |
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CS5530 Datasheet(HTML) 162 Page - National Semiconductor (TI) |
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162 / 241 page  www.national.com 162 Revision 4.1 Register Descriptions (Continued) Index 86h Second Level Power Management Status Mirror Register 3 (RO) Reset Value = 00h 7 Video Access Trap SMI Status (Read Only): SMI was caused by a trapped I/O access to the Video I/O Trap? 0= No; 1 = Yes. This is the second level of SMI status reporting. The top level is reported at F1BAR+Memory Offset 00h/02h[0]. SMI generation enabling is at F0 Index 82h[7]. 6 Reserved (Read Only) 5 Secondary Hard Disk Access Trap SMI Status (Read Only): SMI was caused by a trapped I/O access to the secondary hard disk? 0 = No; 1 = Yes. This is the second level of SMI status reporting. The top level is reported at F1BAR+Memory Offset 00h/02h[0]. SMI generation enabling is at F0 Index 83h[6]. 4 Secondary Hard Disk Idle Timer SMI Status (Read Only): SMI was caused by expiration of Hard Disk Idle Timer Count Register (F0 Index ACh)? 0 = No; 1 = Yes. This is the second level of SMI status reporting. The top level is reported at F1BAR+Memory Offset 00h/02h[0]. SMI generation enabling is at F0 Index 83h[7]. 3 Keyboard/Mouse Access Trap SMI Status (Read Only): SMI was caused by a trapped I/O access to the keyboard or mouse? 0 = No; 1 = Yes. This is the second level of SMI status reporting. The top level is reported at F1BAR+Memory Offset 00h/02h[0]. SMI generation enabling is at F0 Index 82h[3]. 2 Parallel/Serial Access Trap SMI Status (Read Only): SMI was caused by a trapped I/O access to either the serial or parallel ports? 0 = No; 1 = Yes. This is the second level of SMI status reporting. The top level is reported at F1BAR+Memory Offset 00h/02h[0]. SMI generation enabling is at F0 Index 82h[2]. 1 Floppy Disk Access Trap SMI Status (Read Only): SMI was caused by a trapped I/O access to the floppy disk? 0= No; 1 = Yes. This is the second level of SMI status reporting. The top level is reported at F1BAR+Memory Offset 00h/02h[0]. SMI generation enabling is at F0 Index 82h[1]. 0 Primary Hard Disk Access Trap SMI Status (Read Only): SMI was caused by a trapped I/O access to the primary hard disk? 0 = No; 1 = Yes. This is the second level of SMI status reporting. The top level is reported at F1BAR+Memory Offset 00h/02h[0]. SMI generation enabling is at F0 Index 82h[0]. Note: This register provides status on the Device Traps to the SMI handler. A bit set here indicates that an access occurred to the device while the trap was enabled, causing an SMI. It is called a Mirror register since an identical register exists at F0 Index F6h of this register. Reading this register does not clear the status, while reading its counterpart at F0 Index F6h does clear the status. Table 4-14. F0 Index xxh: PCI Header and Bridge Configuration Registers (Continued) Bit Description |
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