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DM9102A Datasheet(PDF) 61 Page - List of Unclassifed Manufacturers

Part # DM9102A
Description  Single Chip Fast Ethernet NIC controller
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Manufacturer  ETC [List of Unclassifed Manufacturers]
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DM9102A Datasheet(HTML) 61 Page - List of Unclassifed Manufacturers

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DM9102A
Single Chip Fast Ethernet NIC controller
Final
Version: DM9102A-DS-F03
August 28, 2000
61
Serial ROM Overview
The purpose of Configuration ROM (EEPROM) is to support
the DM9102A information to the driver for the card. The
SROM must support 64 words or more space for
configuration data. The format of the SROM is as followed
The format of EEPROM
Field Name
Offset
Size
Subsystem ID block
0
18
CROM version
18
1
Controller count
19
1
Controller_0 Information
20
n
Controller_1 Information
20+n
m
: (depends on controller count)
:
:
CRC checksum
126
2
1. Subsystem ID Block
Every card must have a Subsystem ID to indicate the
system vendor information. The content will be transferred
into the PCI configuration space during hardware reset
function.
Vendor ID & Device ID can be set in EEPROM content &
auto-loaded to PCI configuration register after reset.(default
value = 1282, 9102) This function must be selectable for
enable/disable by Auto_Load_Control (offset 08 of
EEPROM) setting to avoid damaging default value due to
incorrectly auto-load operation. CRC check circuit of
EEPROM contents to decide the auto-load operation of
Vendor ID & Subsystem.
Subsystem Vendor ID
Subsystem ID
Reserved
Reserved
ID_block_CRC
PMC
PMCSR
Reserved
PCI Device ID
PCI Vender ID
NCE
Auto_load_control
0
2
4
6
8
10
12
14
17,16
Byte Offset.
Subsystem ID Block
Byte Offset (08): Auto_Load_Control
0
3
4
7
Bit3~0: “1010” to enable auto-load of PCI Vendor_ID &
Device_ID, “0” to disable.
Bit7~4: “1X1X” to enable auto-load of NCE, PME & PMC &
PMCSR to PCI configuration space. These four bits can
also control the inverse of WOL or PULSE WOL..


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