TLK111_14 Datasheet, PDF (79/110 Pages) Texas Instruments – PHYTER® Industrial Temperature 10/100Mbs Ethernet Physical Layer Transceiver

TLK111
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SLLSEF8B – AUGUST 2013 – REVISED JANUARY 2014
Table 8-44. Cable Diagnostic Specific Control Register (CDSCR), address 0x0170 (continued)
BIT
BIT NAME
12 Diagnostic TPRD
Bypass
11 RESERVED
10:8 Diagnostics Average
Cycles
7:0 RESERVED
DEFAULT
0, RO
1, RW
110, RW
0, RO
DESCRIPTION
TPRD Diagnostic Bypass
1 = Bypass TPRD diagnostic. TDR on TPRD pair will not be executed.
0 = TDR is executed on TPRD pair
RESERVED: Must be Set to 1.
Number Of TDR Cycles to Average:
<000>: 1 TDR cycle
<001>: 2 TDR cycles
<010>: 4 TDR cycles
<011>: 8 TDR cycles
<100>: 16 TDR cycles
<101>: 32 TDR cycles
<110>: 64 TDR cycles (default)
<111>: Reserved
RESERVED: Writes ignored, read as 0.
Table 8-45. Cable Diagnostic Specific Control Register 2 (CDSCR2), address 0x0171
BIT
BIT NAME
15:4 RESERVED
3:0 TDR pulse control
DEFAULT
1100 1000
0101, RW
1100, RW
RESERVED: Ignore on read
DESCRIPTION
Configure expected self reflection in TDR
Table 8-46. Cable Diagnostic Specific Control Register 3 (CDSCR3), address 0x0173
BIT
BIT NAME
15:8 Cable length cfg
7:0 RESERVED
DEFAULT
1111 1111,
RW
1111 1111,
RW
DESCRIPTION
Configure duration of listening to detect long cable reflections
RESERVED: Ignore on read
Table 8-47. Cable Diagnostic Specific Control Register 4 (CDSCR4), address 0x0177
BIT
BIT NAME
15:13 RESERVED
12:8 Short cables TH
7:0 RESERVED
DEFAULT
DESCRIPTION
000, RW RESERVED: Ignore on read
1 1000, RW TH to compensate for strong reflections in short cables
1001 0110, RESERVED: Ignore on read
RW
8.13.3 Cable Diagnostic Location Results Register 1 (CDLRR1)
This register provides the peaks locations after execution of the TDR. The values of this register are valid
after reading 1 in Diagnostic Done bit 1 in register CDCR (0x1E).
Table 8-48. Cable Diagnostic Location Results Register 1 (CDLRR1), address 0x0180
BIT NAME
15:8 TPTD Peak
Location 2
7:0 TPTD Peak
Location 1
DEFAULT
0000 0000, RO
0000 0000, RO
FUNCTION
Location of the Second peak discovered by the TDR mechanism on Transmit Channel
(TPTD). The value of these bits is translated into distance from the PHY
Location of the First peak discovered by the TDR mechanism on Transmit Channel
(TPTD). The value of these bits is translated into distance from the PHY
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