Electronic Components Datasheet Search
Selected language     English  ▼
Part Name
         Description


FDC37M70X Datasheet(PDF) 87 Page - List of Unclassifed Manufacturers

Part No. FDC37M70X
Description  Enhanced Super I/O Controller with Wake-Up
Download  194 Pages
Scroll/Zoom Zoom In 100% Zoom Out
Maker  ETC [List of Unclassifed Manufacturers]
Homepage  
Logo 

 87 page
background image
87
Write Sequence of Operation
1.
The host sets PDIR bit in the control
register to a logic "0".
This asserts
nWRITE.
2.
The host selects an EPP register, places
data on the SData bus and drives nIOW
active.
3.
The chip places address or data on PData
bus.
4.
Chip asserts nDATASTB or nADDRSTRB
indicating that PData bus contains valid
information, and the WRITE signal is valid.
5.
If
nWAIT
is
asserted,
IOCHRDY
is
deasserted until the peripheral deasserts
nWAIT or a time-out occurs.
6.
When the host deasserts nIOW the chip
deasserts nDATASTB or nADDRSTRB and
latches the data from the SData bus for the
PData bus.
7.
Chip may modify nWRITE, PDIR and
nPDATA in preparation of the next cycle.
EPP 1.7 Read
The timing for a read operation (data) is shown
in timing diagram EPP 1.7 Read Data cycle.
IOCHRDY is driven active low when nWAIT is
active low during the EPP cycle. This can be
used to extend the cycle time. The read cycle
can complete when nWAIT is inactive high.
Read Sequence of Operation
1.
The host sets PDIR bit in the control
register to a logic "1".
This deasserts
nWRITE and tri-states the PData bus.
2.
The host selects an EPP register and drives
nIOR active.
3.
Chip asserts nDATASTB or nADDRSTRB
indicating that PData bus is tri-stated, PDIR
is set and the nWRITE signal is valid.
4.
If
nWAIT
is
asserted,
IOCHRDY
is
deasserted until the peripheral deasserts
nWAIT or a time-out occurs.
5.
The Peripheral drives PData bus valid.
6.
The Peripheral deasserts nWAIT, indicating
that PData is valid and the chip may begin
the termination phase of the cycle.
7.
When the host deasserts nIOR the chip
deasserts nDATASTB or nADDRSTRB.
8.
Peripheral tri-states the PData bus.
9.
Chip may modify nWRITE, PDIR and
nPDATA in preparation of the next cycle.




Html Pages

1  2  3  4  5  6  7  8  9  10  11  12  13  14  15  16  17  18  19  20  21  22  23  24  25  26  27  28  29  30  31  32  33  34  35  36  37  38  39  40  41  42  43  44  45  46  47  48  49  50  51  52  53  54  55  56  57  58  59  60  61  62  63  64  65  66  67  68  69  70  71  72  73  74  75  76  77  78  79  80  81  82  83  84  85  86  87  88  89  90  91  92  93  94  95  96  97  98  99  100   ...More


Datasheet Download



Related Electronics Part Number

Part NumberComponents DescriptionHtml ViewManufacturer
FDC37B80XPC98/99 Compliant Enhanced Super I/O Controller with Keyboard/Mouse Wake-Up 1 2 3 4 5 MoreSMSC Corporation
FDC37M81PC98/99 Compliant Enhanced Super I/O Controller with Keyboard/Mouse Wake-Up 1 2 3 4 5 MoreSMSC Corporation
LPC47M112ENHANCED SUPER I/O CONTROLLER WITH LPC INTERFACE 1 2 3 4 5 MoreSMSC Corporation
LPC47B37X100 Pin Enhanced Super I/O for LPC Bus with SMBus Controller for Commercial Applications 1 2 3 4 5 MoreSMSC Corporation
LPC47M112-MCENHANCED SUPER I/O CONTROLLER WITH LPC INTERFACE 1 2 3 4 5 MoreSMSC Corporation
37B77XENHANCED SUPER I/O CONTROLLER WITH WAKE UP FEATURES 1 2 3 4 5 MoreSMSC Corporation
FDC37B78XEnhanced Super I/O Controller with ACPI Support Real Time Clock and Consumer IR 1 2 3 4 5 MoreSMSC Corporation
37C67XENHANCED SUPER I/O CONTROLLER WITH FAST IR 1 2 3 4 5 MoreSMSC Corporation
LPC47M10X100 Pin Enhanced Super I/O Controller with LPC Interface for Consumer Applications 1 2 3 4 5 SMSC Corporation
FDC37B727128 Pin Enhanced Super I/O Controller with ACPI Support 1 2 3 4 5 MoreSMSC Corporation

Link URL

Does ALLDATASHEET help your business so far?  [ DONATE ]  

About Alldatasheet   |   Advertisement   |   Datasheet Upload   |   Contact us   |   Privacy Policy   |   Bookmark   |   Link Exchange   |   Manufacturer List
All Rights Reserved© Alldatasheet.com


Mirror Sites
English : Alldatasheet.com  , Alldatasheet.net  |   Chinese : Alldatasheetcn.com  |   German : Alldatasheetde.com  |   Japanese : Alldatasheet.jp  |   Russian : Alldatasheetru.com
Korean : Alldatasheet.co.kr   |   Spanish : Alldatasheet.es  |   French : Alldatasheet.fr  |   Italian : Alldatasheetit.com  |   Portuguese : Alldatasheetpt.com  |   Polish : Alldatasheet.pl