LPC47N237-MD SMSC [SMSC Corporation], LPC47N237-MD Datasheet - Page 113

• Manufacturer Part Number: LPC47N237-MD
• Description: 3.3V I/O CONTROLLER FOR PORT REPLICATORS AND DOCKING STATIONS
• Manufacturer: SMSC [SMSC Corporation]

3.3v I/O Controller for Port Replicators and Docking Stations
SMSC DS – LPC47N237
NAME/DEFAULT
SMBus Isolation
Default = 0x00
on VTR POR
GPCHG_STS
Default = 0x00
on VTR POR
GPDIR1
Default = 0x00
on VTR POR
GPDIR2
Default = 0x00
on VTR POR
OFFSET (TYPE)
REGISTER
(R/W)
(R/W)
(R/W)
(R/W)
0x0E
0x0F
0x10
0x11
DATASHEET
SMBus Isolation Select. Bits[1:0] control which pair of SMBus
pins (SCLK_1/SDAT_1, SCLK_2/SDAT_2) are connected to the
SMBus.
Bits[1:0]: SMBus Isolation Select
00= both SMBus devices isolated from SMBus (default)
01= SCLK_1/SDAT_1 connected to SMBus
10= SCLK_2/SDAT_2 connected to SMBus
11= both SMBus devices connected to SMBus
Bits[7:2] Reserved.
GPIO Change Status Register
0 = No Change since last GP data register read
1 = Changed since last GP data register read
Bit[0] GP1 Data Register
Bit[1] GP2 Data Register
Bit[2] GP3 Data Register
Bit[3] GP4 Data Register
Bit[7:4] Reserved
GPIO Direction Register 1
0 = Input
1 = Output
Bit[0] GP10
Bit[1] GP11
Bit[2] GP12
Bit[3] GP13
Bit[4] GP14
Bit[5] GP15
Bit[6] GP16
Bit[7] GP17
GPIO Direction Register 2
0 = Input
1 = Output
Bit[0] GP20
Bit[1] GP21
Bit[2] GP22
Bit[3] GP23
Bit[4] GP24
Bit[5] GP25
Bit[6] GP26
Bit[7] GP27
Page 113
DESCRIPTION
Revision 0.3 (10-26-04)