Electronic Components Datasheet Search
  English  ▼

Delete All
ON OFF
ALLDATASHEET.COM

X  

Preview PDF HTML

KS8993M Datasheet(PDF) 32 Page - Micrel Semiconductor

Part No. KS8993M
Description  Integrated 3-Port 10/100 Managed Integrated 3-Port 10/100 Managed
Download  85 Pages
Scroll/Zoom Zoom In 100% Zoom Out
Maker  MICREL [Micrel Semiconductor]
Homepage  http://www.micrel.com
Logo 

KS8993M Datasheet(HTML) 32 Page - Micrel Semiconductor

Zoom Inzoom in Zoom Outzoom out
 32 / 85 page
background image
Micrel, Inc.
KS8993M/ML/MI
April 2005
32
M9999-041205
The MIIM interface consists of the following:
A physical connection that incorporates the data line (MDIO) and the clock line (MDC).
A specific protocol that operates across the aforementioned physical connection that allows an external
controller to communicate with the KS8993M device.
Access to a set of six 16-bits registers, consisting of standard MIIM registers [0:5].
The following table depicts the MII Management Interface frame format.
Preamble
Start of
Frame
Read/Write
OP Code
PHY
Address
Bits [4:0]
REG
Address
Bits [4:0]
TA
Data
Bits [15:0]
Idle
Read
32 1’s
01
10
xx0AA
RRRRR
Z0
DDDDDDDD_DDDDDDDD
Z
Write
32 1’s
01
01
xx0AA
RRRRR
10
DDDDDDDD_DDDDDDDD
Z
Table 5. MII Management Interface Frame Format
For the KS8993M, MIIM register access is selected when bit 2 of the PHY address is set to ‘0’. PHY address bits
[4:3] are not defined for MIIM register access, and hence can be set to either 0’s or 1’s in read/write operation.
Serial Management Interface (SMI)
The SMI is the KS8993M non-standard MIIM interface that provides access to all KS8993M configuration
registers. This interface allows an external device to completely monitor and control the states of the KS8993M.
The SMI interface consists of the following:
A physical connection that incorporates the data line (MDIO) and the clock line (MDC).
A specific protocol that operates across the aforementioned physical connection that allows an external
controller to communicate with the KS8993M device.
Access to all KS8993M configuration registers. Registers access includes the Global, Port and
Advanced Control Registers 0-127 (0x00 – 0x7F), and indirect access to the standard MIIM registers
[0:5].
The following table depicts the SMI frame format.
Preamble
Start of
Frame
Read/Write
OP Code
PHY
Address
Bits [4:0]
REG
Address
Bits [4:0]
TA
Data
Bits [15:0]
Idle
Read
32 1’s
01
10
RR1xx
RRRRR
Z0
0000_0000_DDDD_DDDD
Z
Write
32 1’s
01
01
RR1xx
RRRRR
10
xxxx_xxxx_DDDD_DDDD
Z
Table 6. Serial Management Interface (SMI) Frame Format
For the KS8993M, SMI register access is selected when bit 2 of the PHY address is set to ‘1’. PHY address bits
[1:0] are not defined for SMI register access, and hence can be set to either 0’s or 1’s in read/write operation.
To access the KS8993M registers 0-127 (0x00 – 0x7F), the following applies:
PHYAD[4:3] and REGAD[4:0] are concatenated to form the 7-bits address; that is, {PHYAD[4:3],
REGAD[4:0]} = bits [6:0] of the 7-bits address.


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 


Datasheet Download




Link URL




Privacy Policy
ALLDATASHEET.COM
Does ALLDATASHEET help your business so far?  [ DONATE ]  

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


Mirror Sites
English : Alldatasheet.com  |   English : 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  |   Vietnamese : Alldatasheet.vn