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PC87364-XXX/VLA 데이터시트(PDF) 151 Page - National Semiconductor (TI)

[Old version datasheet] Texas Instruments acquired National semiconductor.
부품명 PC87364-XXX/VLA
상세설명  128-Pin LPC SuperI/O with Extended Wake-Up and Protection Support
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9.0
Legacy Functional Blocks
This chapter briefly describes the following blocks that provide legacy device functions:
q
Keyboard and Mouse Controller (KBC)
q
Floppy Disk Controller (FDC)
q
Parallel Port
q
Serial Port 1 (SP1), UART Functionality for both Serial Port 1 and Serial Port 2
q
Serial Port 2 (SP2), Infrared Functionality
The description of each Legacy block includes the sections listed below. For more information about legacy blocks, contact
your National representative.
q
General Description
q
Register Map table(s)
q
Bitmap table(s).
The register maps in this chapter use the following abbreviations for Type:
q
R/W = Read/Write
q
R = Read from a specific address returns the value of a specific register. Write to the same address is to a different
register.
q
W=Write
q
RO = Read Only
q
R/W1C = Read/Write 1 to Clear. Writing 1 to a bit clears it to 0. Writing 0 has no effect.
9.1
KEYBOARD AND MOUSE CONTROLLER (KBC)
9.1.1
General Description
The KBC is implemented physically as a single hardware module and houses two separate logical devices: a Mouse con-
troller and a Keyboard controller.
The KBC is functionally equivalent to the industry standard 8042A Keyboard controller, which may serve as a detailed tech-
nical reference for the KBC.
9.1.2
KBC Register Map
9.1.3
KBC Bitmap Summary
Offset
Mnemonic
Register Name
Type
00h
DBBOUT Read KBC Data
R
DBBIN
Write KBC Data
W
04h
STATUS Read Status
R
DBBIN
Write KBC Command
W
Register
Bits
Offset
Mnemonic
76543210
00h
DBBOUT
KBC Data Bits (For Read cycles)
DBBIN
KBC Data Bits (For Write cycles)
04h
STATUS
General Purpose Flags
F1
F0
IBF
OBF
DBBIN
KBC Command Bits (For Write cycles)



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