WG82577LM S LGWS Intel, WG82577LM S LGWS Datasheet - Page 89
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WG82577LM S LGWS
Manufacturer Part Number
WG82577LM S LGWS
Description
Manufacturer
Intel
Datasheet
1.WG82577LM_S_LGWS.pdf
(195 pages)
Specifications of WG82577LM S LGWS
Lead Free Status / RoHS Status
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Programmer’s Visible State—82577 GbE PHY
8.10
8.10.1
Wake Up Registers
Accessing Wake Up Registers Using MDIC
When software needs to configure the wake up state (either read or write to these
registers) the MDIO page should be set to 800 (for host accesses) until the page is not
changed to a different value wake up register access is enabled. After the page was set
to the wake up page, the address field is no longer translated as reg_addr (register
address) but as an instruction. If the given address is in the [0..15] range, meaning
PHY registers, the functionality remains unchanged. There are two valid instructions:
For the 82577 the wake area read cycle sequence of events is as follows:
For the 82577, the wake area write cycle sequence of events is as follows:
1. Address Set – 0x11 – Wake up space address is set for either reading or writing.
2. Data cycle – 0x12 – Wake up space accesses read or write cycle.
1. Setting page 800; the software device driver performs a write cycle to the MDI
2. Address setting; the software device driver performs a write cycle to the MDI
3. Reading a register; the software device driver performs a write cycle to the MDI
1. Setting page 800; the software device driver performs a write cycle to the MDI
register with:
a. Ready = 0b
b. Op-Code = 01b (write)
c.
d. REGADD = Page setting
e. DATA = 800 (wake up page)
register with:
a. Ready = 0b
b. Op-Code = 01b (write)
c.
d. REGADD = 0x11 (address set)
e. DATA = XXXX (address of the register to be read)
register with:
a. Ready = 0b
b. Op-Code = 10b (read)
c.
d. REGADD = 0x12 (data cycle for read)
e. DATA = YYYY (data is valid when the ready bit is set)
register with:
a. Ready = 0b
b. Op-Code = 01b (write)
c.
d. REGADD = Page setting
e. DATA = 800 (wake up page)
PHYADD = The 82577’s address from the MDI register
PHYADD = The 82577’s address from the MDI register
PHYADD = The 82577’s address from the MDI register
PHYADD = The 82577’s address from the MDI register
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