Datasheet
DP83630
www.ti.com
SNLS335B –OCTOBER 2010–REVISED APRIL 2013
10.2.7 10Base-T Status/Control Register (10BTSCR)
This register is used for control and status for 10BASE-T device operation.
Table 10-22. 10Base-T Status/Control Register (10BTSCR), address 0x1A
Bit Bit Name Default Description
15 RESERVED 0, RO RESERVED: Writes ignored, read as 0.
14:12 RESERVED 000, RW RESERVED: Must be zero.
Squelch Configuration:
11:9 SQUELCH 100, RW Used to set the Squelch 'ON' threshold for the receiver.
Default Squelch 'ON' is 330mV peak.
10Base-T Loopback Disable:
This bit is OR’ed with bit 14 (Loopback) in the BMCR.
8 LOOPBACK_10_DIS 0, RW
1 = 10BT Loopback is disabled
0 = 10BT Loopback is enabled
Normal Link Pulse Disable:
This bit is OR’ed with the MAC_FORCE_LINK_10 signal.
7 LP_DIS 0, RW
1 = Transmission of NLPs is disabled.
0 = Transmission of NLPs is enabled.
Force 10 Mb Good Link:
This bit is OR’ed with the MAC_FORCE_LINK_10 signal.
6 FORCE_LINK_10 0, RW
1 = Forced Good 10 Mb Link.
0 = Normal Link Status.
Force 10 Mb Polarity Correction:
5 FORCE_POL COR 0, RW 1 = Force inverted polarity
0 = Normal polarity
10 Mb Polarity Status:
This bit is a duplication of bit 12 in the PHYSTS register. Both bits will be cleared
upon a read of either register.
4 POLARITY 0, RO/LH
1 = Inverted Polarity detected.
0 = Correct Polarity detected.
Auto Polarity Detection & Correction Disable:
3 AUTOPOL_DIS 0, RW 1 = Polarity Correction disabled
0 = Polarity Correction enabled
10BT Scale Configuration Most Significant Bit
2 10BT_SCALE - MSB 1, RW Used in conjunction with bit 10 of SD_CNFG register to set the silence ’OFF’
threshold for the receiver.
Heartbeat Disable:
This bit only has influence in half-duplex 10 Mb mode.
1 = Heartbeat function disabled.
1 HEARTBEAT_DIS 0, RW
0 = Heartbeat function enabled.
When the device is operating at 100 Mb or configured for full duplex
operation, this bit will be ignored - the heartbeat function is disabled.
Jabber Disable:
This bit is only applicable in 10BASE-T.
0 JABBER_DIS 0, RW
1 = Jabber function disabled.
0 = Jabber function enabled.
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