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Datenblatt-Suchmaschine für elektronische Bauteile |
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Datenblatt-Suchmaschine für elektronische Bauteile |
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PC87413 Datenblatt(PDF) 68 Page - National Semiconductor (TI) |
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PC87413 Datenblatt(HTML) 68 Page - National Semiconductor (TI) |
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68 / 257 page  3.0 Device Architecture and Configuration (Continued) www.national.com 68 Revision1.2 3.13 KEYBOARD AND MOUSE CONTROLLER (KBC) CONFIGURATION 3.13.1 General Description The KBC is implemented physically as a single hardware module and houses two separate logical devices: a Mouse con- troller (Logical Device 5) and a Keyboard controller (Logical Device 6). The KBC is functionally equivalent to the industry standard 8042A Keyboard controller. Technical references for the standard 8042A Keyboard Controller may serve as de- tailed technical references for the KBC. The Keyboard and Mouse Controller runtime registers are described in Section 10.4 on page 229. All the registers are VDD powered. 3.13.2 Logical Devices 5 and 6 (Mouse and Keyboard) Configuration Tables 22 and 23 list the configuration registers that affect the Mouse and the Keyboard logical devices, respectively. Only the last register (F0h) is described here. See Section 3.2.3 on page 40 for descriptions of the other configuration registers. All these registers are VDD powered. Table 22. Mouse Configuration Registers Table 23. Keyboard Configuration Registers Index Mouse Configuration Register or Action Type Power Well Reset 30h Activate (see Section 3.2.3 on page 40). When the Mouse of the KBC is inactive, the IRQ selected by the Mouse Interrupt Number and Wake-Up on IRQ Enable register (index 70h) are not asserted. This register has no effect on host KBC commands handling the PS/2 Mouse. R/W VDD 00h 70h Mouse Interrupt Number and Wake-Up on IRQ Enable register. R/W VDD 0Ch 71h Mouse Interrupt Type. Bits 1,0 are read/write; other bits are read only. R/W VDD 02h 74h Report no DMA assignment. RO VDD 04h 75h Report no DMA assignment. RO VDD 04h Index Keyboard Configuration Register or Action Type Power Well Reset 30h Activate (see Section 3.2.3 on page 40). When the Keyboard of the KBC is inactive, the IRQ selected by the Keyboard Interrupt Number and Wake-Up on IRQ Enable register (index 70h) are not asserted. R/W VDD 00h 60h Base Address MSB register. Bits 7-3 (for A15-11) are read only, 00000b. R/W VDD 00h 61h Base Address LSB register. Bits 2-0 (for A2-0) are read-only 000b. R/W VDD 60h 62h Command Base Address MSB register. Bits 7-3 (for A15-11) are read only, 00000b. R/W VDD 00h 63h Command Base Address LSB. Bits 2-0 (for A2-0) are read-only 100b. R/W VDD 64h 70h KBD Interrupt Number and Wake-Up on IRQ Enable register. R/W VDD 01h 71h KBD Interrupt Type. Bits 1,0 are read/write; others are read only. R/W VDD 02h 74h Report no DMA assignment. RO VDD 04h 75h Report no DMA assignment. RO VDD 04h F0h KBC Configuration register. R/W VDD 40h |
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