LPC47M112_07 SMSC [SMSC Corporation], LPC47M112_07 Datasheet - Page 61

• Manufacturer Part Number: LPC47M112_07
• Description: Enhanced Super I/O Controller with LPC Interface
• Manufacturer: SMSC [SMSC Corporation]

Enhanced Super I/O Controller with LPC Interface
Datasheet
their default values. A status byte is returned immediately after issuing a LOCK command. This byte reflects the value
of the LOCK bit set by the command byte.
ENHANCED DUMPREG
The DUMPREG command is designed to support system run-time diagnostics and application software development
and debug. To accommodate the LOCK command and the enhanced PERPENDICULAR MODE command the eighth
byte of the DUMPREG command has been modified to contain the additional data from these two commands.
COMPATIBILITY
The LPC47M112 was designed with software compatibility in mind. It is a fully backwards- compatible solution with the
older generation 765A/B disk controllers. The FDC also implements on-board registers for compatibility with the PS/2, as
well as PC/AT and PC/XT, floppy disk controller subsystems. After a hardware reset of the FDC, all registers, functions
and enhancements default to a PC/AT, PS/2 or PS/2 Model 30 compatible operating mode, depending on how the
IDENT and MFM bits are configured by the system BIOS.
SMSC DS – LPC47M112
Page 61
Rev. 02-16-07
DATASHEET