WG82574L S LBA9 Intel, WG82574L S LBA9 Datasheet - Page 67

• Manufacturer Part Number: WG82574L S LBA9
• Description: CONTROLLER, ENET, INTEL 82574L, 64PQFN
• Manufacturer: Intel

Specifications of WG82574L S LBA9

• Ethernet Type: IEEE 802.3, IEEE 802.3u, IEEE 802.3ab
• Supply Voltage Range: 3V To 3.6V
• Operating Temperature Range: 0°C To +85°C
• Digital Ic Case Style: QFN
• No. Of Pins: 64
• Package / Case: QFN
• Interface Type: I2C, JTAG, PCI, SPI
• Rohs Compliant: Yes
• Lead Free Status / RoHS Status: Lead free / RoHS Compliant

Initialization—82574 GbE Controller
Figure 11.
82574L Initialization - Flash Load
Notes:
1. A 4 KB sector is read in a single burst, so the packet overhead is negligible. The
2. The shadow RAM is read at the rate of one word every ~3 clocks of 62.5 MHz, or
3. Clear write protection is required for an SST* Flash only. The instruction codes that
rate is 4 KB x 8 bits / 15.625 Mb/s = 2.1 ms.
~50 ns per word. The 64 words are read in 3.2 ms.
are required to initiate are hardwired in the design as defined by SST 25xxx Flash
family: code 0x50 for write status enable and code 0x01 for status write. The
82574L writes a data of 0x00 to the status word which clears all protection.
Software accesses to the Flash are not executed until this step completes.
signature
82574 set to default
Bad
Set EEC.Auto_RD
Read signature at word
0
values
~0
2K+0x12
signature
Bad
Load sector 1 to Shadow
Set EEC.SHADV & set
signature
Good
~2.1
Read signature at word
EEC.SEL1VAL
RAM
~0
C
0x12
A
1
Load sector 0 to Shadow
enable and write status
Set EEC.SHADV & clear
Load base area (0x00-
Clear Write Protection
Set Flash write status
signature
0x40) from Shadow
~0.0032
Good
0.008
~2.1
EEC.SEL1VAL
RAM
RAM
2
3
1
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