18H: 10Base-T Register (Shadow Register Selector = "001") - Broadcom NetXtreme/NetLink BCM5718 Series Programmer's Manual

BCM5718 Programmer's Guide
Bit Name
Note: Register Reads/Writes Description
Write register 18h, bits [2:0] = 111 This selects the Miscellaneous Control register, shadow 7h.
All reads must be performed through the Miscellaneous Control register.
Bit 15 = 0 This allows only bits [14:12] and bits [2:0] to be written.
Bits [14:12] = zzz This selects shadow register zzz to be read.
Bits [11: 3] = <don't care> When bit 15 = 0, these bits are ignored.
Bits [2:0] = 111 This sets the Shadow Register Select to 111 (Miscellaneous Control
register).
Read register 18h Data read back is the value from shadow register zzz.
Note: Register Writes Description
Set Bits [15:3] = Preferred write values Bits [15:3] contain the desired bits to be written to.
Set Bits [2:0] = yyy This enables shadow register yyy to be written.
For shadow 7h, bit 15 must also be written.
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PHY 0x18 Shadow 0x1 register read Procedure
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int value;
phy_write(0x18, 0x1007); //switch to shadow 0x1
valu = phy_read(0x18);
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PHY 0x18 Shadow 0x2 register write Procedure
--------------------------------------------
int wdata;
phy_write(0x18, 0x2007); //switch to shadow 0x2
phy_write(0x18, wdata | 0x2 );

18h: 10BASE-T Register (Shadow Register Selector = "001")

Bit Name
15 MANCHESTER CODE
ERROR
14 EOF ERROR
13 POLARITY ERROR
12 BLOCK RXDV
EXTENSION (IPG)
Broadcom
®
January 29, 2016 • 5718-PG108-R
RW Description
RW Description
RO 1 = manchester code error (10BASE-T)
LH 0 = no manchester code error
RO 1 = EOF detection error (10BASE-T)
LH
0 = no EOF detection error
RO 1 = channel polarity inverted
0 = channel polarity correct
RW 1 = block rxdv for 4 additional rxc cycles for ipg
0 = normal operation
10h–1Fh Register Map Detailed Description
Default
Default
0
0
0
0
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