GD82559ER 824184 Intel, GD82559ER 824184 Datasheet - Page 35

• Manufacturer Part Number: GD82559ER 824184
• Manufacturer: Intel

Specifications of GD82559ER 824184

• Operating Supply Voltage (typ): 3.3V
• Operating Supply Voltage (min): 3V
• Operating Temperature Classification: Commercial
• Mounting: Surface Mount
• Pin Count: 196
• Lead Free Status / RoHS Status: Not Compliant

Datasheet
All accesses, either read or write, are preceded by a command instruction to the device. The
address field is six bits for a 64 register EEPROM or eight bits for a 256 register EEPROM. The
end of the address field is indicated by a dummy zero bit from the EEPROM, which indicates the
entire address field has been transferred to the device. An EEPROM read instruction waveform is
shown in the figure below.
The 82559ER performs an automatic read of seven words (0H, 1H, 2H, AH, Bh, Ch and DH) of the
EEPROM after the de-assertion of Reset.
The 82559ER EEPROM format is shown below in
Word
CH
DH
AH
BH
0H
1H
2H
E E D O
E E S K
E E C S
E E D I
15
Sig
14
13
ID
Figure 11. 64 Word EEPROM Read Instruction Waveform
R E A D O P c o d e
IA Byte 2
IA Byte 4
IA Byte 6
12
0b
BD
11
Figure 12. 82559ER EEPROM Format
A
10
5
Rev ID
A
4
Subsystem Vendor ID
9
Subsystem ID
A
3
Reserved
8
Figure
A
2
1b
7
A
A
A
1
1
Networking Silicon — GD82559ER
0
12.
DPD
6
A
0
0b
5
D
IA Byte 1
IA Byte 3
IA Byte 5
1 5
4
00b
3
D
0
0b
2
STB
Ena
1
0b
0
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