lpc47s457-ns Standard Microsystems Corp., lpc47s457-ns Datasheet - Page 165
lpc47s457-ns
Manufacturer Part Number
lpc47s457-ns
Description
Advanced I/o With X-bus Interface
Manufacturer
Standard Microsystems Corp.
Datasheet
1.LPC47S457-NS.pdf
(259 pages)
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Part Number:
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SMSC LPC47S45x
PME_EN5
Default = 0x00 on
VTR POR
PME_EN6
Default = 0x00 on
VTR POR
SMI_STS1
Default = 0x02
Bit 1 is set to ‘1’ on
VCC POR, VTR
POR, PCI Reset and
soft reset
on VTR POR
NAME
REG OFFSET
(R/W)
(R/W)
(R/W)
(hex)
0E
0F
10
DATASHEET
PME Wake Enable Register 5
This register is used to enable individual PME wake sources onto
the IO_PME# wake bus.
When the PME Wake Enable register bit for a wake source is
active (“1”), if the source asserts a wake event so that the
associated status bit is “1” and the PME_En bit is “1”, the source
will assert the IO_PME# signal.
When the PME Wake Enable register bit for a wake source is
inactive (“0”), the PME Wake Status register will indicate the state
of the wake source but will not assert the IO_PME# signal.
Bit[0] GP50
Bit[1] GP51
Bit[2] GP52
Bit[3] GP53
Bit[4] GP54
Bit[5] GP55
Bit[6] GP56
Bit[7] GP57
The PME Wake Enable register is not affected by Vcc POR, SOFT
RESET or PCI RESET.
PME Enable Register 6
This register enables the individual PME sources onto the
PME_ST bus. When the enable bit is ‘1’ and the PME source has
asserted a wake event, the PME_ST bus is asserted. The
PME_ST bus cannot be asserted if the enable bit is ‘0’.
Bit[0] PINT
Bit[1] U2INT
Bit[2] U1INT
Bit[3] FINT
Bit[4] MINT
Bit[5] KINT
Bit[6] WDT
Bit[7] SMB
SMI Status Register 1
This register is used to read the status of the SMI inputs.
The following bits must be cleared at their source.
Bit[0] Reserved
Bit[1] PINT
The parallel port interrupt defults to 1 when the parallel port
activate bit is cleared. When the parallel port is activated, PINT
follows the nACK input.
Bit[2] U2INT
Bit[3] U1INT
Bit[4] FINT
Bit[5] Reserved
Bit[6] Reserved
Bit[7] WDT
Page 165 of 259
DESCRIPTION
Rev. 08-10-09
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