LPC47S457-NC SMSC [SMSC Corporation], LPC47S457-NC Datasheet - Page 201

• Manufacturer Part Number: LPC47S457-NC
• Description: Advanced I/O with X-Bus Interface
• Manufacturer: SMSC [SMSC Corporation]

Note 1: To allow the selection of the configuration address to a user defined location, these Configuration Address
Bytes are used. There is no restriction on the address chosen, except that A0 is 0, that is, the address must be on an
even byte boundary. As soon as both bytes are changed, the configuration space is moved to the specified location
with no delay (Note: Write byte 0, then byte 1; writing CR27 changes the base address).
The configuration address is only reset to its default address upon a PCI Reset or VCC POR.
Note: The default configuration address is either 0x02E or 0x04E, as specified by the SYSOPT pin.
SMSC LPC47S45x
Configuration Port
Address Byte 1
(High Byte)
Default = 0x00
on VCC POR and PCI
RESET
N/A
Chip Level
Vendor Defined
TEST 6
Default = 0x00
on VCC POR and VTR
POR
TEST 4
Default = 0x00
on VCC POR and
VTR POR
TEST 5
Default = 0x00
on VCC POR and
VTR POR
TEST 1
Default = 0x00
on VCC POR and
VTR POR
TEST 2
Default = 0x00
on VCC POR and
VTR POR
TEST 3
Default = 0x00
on VCC POR and
VTR POR
REGISTER
ADDRESS
(Type)
(R/W)
(R/W)
(R/W)
(R/W)
(R/W)
(R/W)
(R/W)
0x2C
0x2A
0x2B
0x2D
0x2E
0x2F
0x27
0x28
0x29
Table 82 − Chip Level Registers
Bit[7:0] Configuration Address Bits [15:8]
(See Note 1)
Bits[7:0] Reserved - Writes are ignored, reads return 0.
Reserved - Writes are ignored, reads return 0.
Test Modes: Reserved for SMSC. Users should not write to this
register, may produce undesired results.
Test Modes: Reserved for SMSC. Users should not write to this
register, may produce undesired results.
Bit[7] Test Mode: Reserved for SMSC. Users should not write
to this bit, may produce undesired results.
Bit[6] 8042 Reset:
1 = put the 8042 into reset
0 = take the 8042 out of reset
Bits[5:0] Test Mode: Reserved for SMSC. Users should not
write to this bit, may produce undesired results.
Test Modes: Reserved for SMSC. Users should not write to this
register, may produce undesired results.
Test Modes: Reserved for SMSC. Users should not write to this
register, may produce undesired results.
Test Modes: Reserved for SMSC. Users should not write to this
register, may produce undesired results.
DATASHEET
Page 201 of 259
DESCRIPTION
Rev. 06-01-06
STATE
C
C
C
C
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