10Base-T Control Register : Register 16 - Samsung KS8910 User Manual

Preliminary Spec. ver
1.4
KS8910 100/10 Mbps ETHERNET TRANSCEIVER

10BASE-T CONTROL REGISTER : REGISTER 16

[B10CR] 10h
15 14
LIT Nor-Thd Jab_En
• TMUXSEL
• TstMode
• PLR
• DLPBK
• SQE_En
• Jab_En
• Nor_Thd
• LIT
13 12 11
SQE_En Reserved
Test MUX Selection
Test Mode
Link Polarity Reverse
Enable
Data Loopback
SQE Test Enable
Jabber Enbale
Normal Threshold
Link Integrity Test
10 9 8
DLPBK 0 0
Not Use
Reduce the 1us Tick to 0.1 us tick. Reduce the 1ms tick to 50us Tick.
This will speed up the timer test 20 time. The following timer for Auto-
Negotiation are set to the test initial values when this bit is set.
• Break Link Timer
TestMode = 0: 1400 ms ticks.
TestMode = 1: 7 ms ticks.
• Auto-negotiation Wait Timer
TestMode = 0: 800 ms ticks.
TestMode = 1: 4 ms ticks.
• Link Fail Inhibit Timer
TestMode = 0: 800 ms ticks.
TestMode = 1: 4 ms ticks.
To get out of the test mode, the programmer has to clear this
TstMode
1 = Enable Link Polarity Reverse function.
0 = Disable Link Polarity Reverse function.
If set, start 10Base-T Data Loop-Back.
1 = Enable SQE Test Function.
0 = Disable SQE Test Function(default).
When this KS8910 is configured for 10Base-T Full Duplex operation,
this bit will be ignored.(The collision/SQE function has no meaning in
Full Duplex mode.)
1 = Enable 10Base-T Jabber function. (default)
0 = Disable 10Base-T Jabber function.
1 = normal squelch threshold selected. (default)
0 = reduced squelch threshold selected.
1 = Link Integrity Test Enable.(defalut)
0 = Link Integrity Test Disable. good link condition forced.
6 5 4 3
0 PLR . TstMode
REGISTERS
10h
2 0
TMUXSEL
7-11