DP83816 Datasheet, PDF (99/112 Pages) National Semiconductor (TI) – DP83816 10/100 Mb/s Integrated PCI Ethernet Media Access Controller and Physical Layer (MacPHYTER-II)

www.ti.com
DP83816
SNLS164E – SEPTEMBER 2005 – REVISED DECEMBER 2015
5.6.4.16 10BASE-T Status and Control Register (TBTSCR)
Table 5-63. 10BASE-T Status and Control Register (TBTSCR) Address 00E8h
BIT
BIT NAME
DEFAULT
DESCRIPTION
15:9 RESERVED
<0000 10>,
R/W
RESERVED
8
LOOPBACK_10_DIS 0, R/W
10BASE-T Loopback Disable:
This bit is ORed with bit 14 (Loopback) in the BMCR.
1 = 10-Mb/s loopback is enabled
0 = 10-Mb/s loopback is disabled
7
LP_DIS
0, R/W
Normal Link Pulse Disable:
1 = Transmission of NLPs is disabled
0 = Transmission of NLPs is enabled
6
FORCE_LINK_10
0, R/W
Force good 10-Mb/s link
1 = Forced good 10-Mb/s link
0 = Normal link status
5
FORCE_POL_COR
0, R/W
Force 10-Mb/s polarity correction:
1 = Force inverted polarity
0 = Normal polarity
4
POLARITY
0, R/W
10 Mb/s polarity status: RO/LH
This bit is a duplication of bit 12 in the PHYSTS register. Both bits are cleared on a
read of either register.
1 = Inverted Polarity detected
0 = Correct Polarity detected
3
AUTOPOL_DIS
0, R/W
Auto Polarity Detection & Correction Disable:
1 = Polarity Sense & Correction disabled
0 = Polarity Sense & Correction enabled
2
RESERVED
1, RO
RESERVED: This bit must be written as a one.
1
HEARTBEAT_DIS
0, R/W
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 is
ignored – the heartbeat function is disabled.
0
JABBER_DIS
0, R/W
Jabber disable:
Applicable only in 10BASE-T Full Duplex.
1 = Jabber function disabled
0 = Jabber function enabled
Copyright © 2005–2015, Texas Instruments Incorporated
Submit Documentation Feedback
Product Folder Links: DP83816
Detailed Description
99