LPC47M172_07 SMSC [SMSC Corporation], LPC47M172_07 Datasheet - Page 143
![no-image](/images/no-image-200.jpg)
LPC47M172_07
Manufacturer Part Number
LPC47M172_07
Description
Advanced I/O Controller with Motherboard GLUE Logic
Manufacturer
SMSC [SMSC Corporation]
Datasheet
1.LPC47M172_07.pdf
(226 pages)
- Current page: 143 of 226
- Download datasheet (2Mb)
7.39
Note:
SMSC LPC47M172
See Table 13.4 for SCK_BJT_GATE timing.
Backfeed Cut and Latched Backfeed Cut Circuitry
The nBACKFEED_CUT requires an external pull-up to V_5P0_STBY.
nBACKFEED_CUT is a signal required by the S3 power state circuitry and is powered by the VTR supply.
It is a function PWRGD_PS and nSLP_S3 according to the table below. nBACKFEED_CUT is used to
switch between the main voltage regulator and the suspend voltage regulator for various sub-systems
when the system is transitioning into the S3 power state.
nBACKFEED_CUT
LATCHED_BF_CUT
PWRGD_PS
Table 7.43 - nBACKFEED_CUT and LATCHED_BF_CUT Pins
Name
SMSC I/O
MCH
0
0
1
1
Table 7.44 - nBACKFEED_CUT Truth Table
Figure 7.15 - SCK_BJT_Gate Circuit
INPUTS
OD8
OP14
SCK_BJT_GATE
DATASHEET
Buffer
NSLP_S3
V_5P0_STBY
Page 143
1k
Power
0
1
0
1
Well
VTR
VTR
RMB_SCK
Open-Drain Output used for
STR Circuitry
for STR Circuitry
Latched Backfeed Cut Output
Advanced I/O Controller with Motherboard GLUE Logic
nBACKFEED_CUT
Description
SMSC/Non-SMSC Register Sets (Rev. 01-11-07)
OUTPUT
Hi-Z
Hi-Z
Hi-Z
0
Datasheet
Related parts for LPC47M172_07
Image
Part Number
Description
Manufacturer
Datasheet
Request
R
![LAN83C183-JD](/images/no-image3.png)
Part Number:
Description:
FAST ETHERNET PHYSICAL LAYER DEVICE
Manufacturer:
SMSC Corporation
Datasheet:
![FDC37N769TQFP](/images/no-image3.png)
Part Number:
Description:
357-036-542-201 CARDEDGE 36POS DL .156 BLK LOPRO
Manufacturer:
SMSC Corporation
Datasheet:
![LPC47M102S-MC](/images/no-image3.png)
Part Number:
Description:
357-036-542-201 CARDEDGE 36POS DL .156 BLK LOPRO
Manufacturer:
SMSC Corporation
Datasheet:
![LPC47N267-MN](/images/no-image3.png)
Part Number:
Description:
357-036-542-201 CARDEDGE 36POS DL .156 BLK LOPRO
Manufacturer:
SMSC Corporation
Datasheet:
![USB20H04-JD](/images/no-image3.png)
Part Number:
Description:
4-PORT USB2.0 HUB CONTROLLER
Manufacturer:
SMSC Corporation
Datasheet:
![FDC37M602](/images/no-image3.png)
Part Number:
Description:
Manufacturer:
SMSC Corporation
Datasheet:
![FDC37B777](/images/no-image3.png)
Part Number:
Description:
Manufacturer:
SMSC Corporation
Datasheet:
![FDC37C672](/images/no-image3.png)
Part Number:
Description:
FDC37C672ENHANCED SUPER I/O CONTROLLER WITH FAST IR
Manufacturer:
SMSC Corporation
Datasheet:
![COM90C66LJP](/images/no-image3.png)
Part Number:
Description:
COM90C66LJPARCNET Controller/Transceiver with AT Interface and On-Chip RAM
Manufacturer:
SMSC Corporation
Datasheet:
![FDC37N869TQFP](/images/no-image3.png)
Part Number:
Description:
Manufacturer:
SMSC Corporation
Datasheet:
![USB97C100QFP](/images/no-image3.png)
Part Number:
Description:
Manufacturer:
SMSC Corporation
Datasheet:
![LPC47N227-MN](/images/no-image3.png)
Part Number:
Description:
Manufacturer:
SMSC Corporation
Datasheet:
![FDC37N869](/images/no-image3.png)
Part Number:
Description:
Manufacturer:
SMSC Corporation
Datasheet:
![LAN91C94](/images/no-image3.png)
Part Number:
Description:
Manufacturer:
SMSC Corporation
Datasheet: