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4.0 Register Set
(Continued)
DP83816
4.3.16 10BASE-T Status/Control Register
Tag:
TBTSCR
Size:
16 bits
Hard Reset:
0804h
Offset:
00E8h
Access:
Read Write
Bit
Bit Name
Description
15:9
Unused
8
LOOPBACK_10_DIS
10BASE-T Loopback Disable:
This bit is OR’ed with bit 14 (Loopback) in the BMCR.
1 = 10 Mb/s Loopback is enabled
0 = 10 Mb/s Loopback is disabled
7
LP_DIS
Normal Link Pulse Disable
:
1 = Transmission of NLPs is disabled
0 = Transmission of NLPs is enabled
6
FORCE_LINK_10
Force 10 Mb/s Good Link:
1 = Forced Good 10 Mb/s Link
0 = Normal Link Status
5
FORCE_POL_COR
Force 10 Mb/s Polarity Correction:
1 = Force inverted polarity
0 = Normal polarity
4
POLARITY
10 Mb/s Polarity Status:
RO/LH
This bit is a duplication of bit 12 in the PHYSTS register. Both bits will be cleared upon a read of
either register.
1 = Inverted Polarity detected
0 = Correct Polarity detected
3
AUTOPOL_DIS
Auto Polarity Detection & Correction Disable:
1 = Polarity Sense & Correction disabled
0 = Polarity Sense & Correction enabled
2
Reserved
Reserved
This bit must be written as a one.
1
HEARTBEAT_DIS
Heartbeat Disable:
This bit only has influence in half-duplex 10 Mb/s mode.
1 = Heartbeat function disabled
0 = Heartbeat function enabled
When the device is operating at 100 Mb/s or configured for full duplex, this bit will be ignored - the
heartbeat function is disabled.
0
JABBER_DIS
Jabber Disable:
Applicable only in 10BASE-T Full Duplex.
1 = Jabber function disabled
0 = Jabber function enabled
Summary of Contents for MacPHYTER-II DP83816
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