TLK100_11 Datasheet, PDF (65/88 Pages) Texas Instruments – Industrial Temp, Single Port 10/100 Mb/s Ethernet Physical Layer Transceiver

TLK100
www.ti.com
SLLS931B – AUGUST 2009 – REVISED DECEMBER 2009
8.5.15 TDR High Threshold Register (TDRHT2)
This register allows configuring the threshold for finding the peaks of the reflected signal in the TDR test.
Table 8-44. TDR High Threshold Register (TDRHT2), address 0x0C08
BIT
NAME
15 Reserved
14:8 cfg_ptrn_High_th_3
7
Reserved
6:0 cfg_ptrn_High_th_2
DEFAULT
0,RO
0x4A,RW
0,RO
0x53,RW
FUNCTION
Ignore on read
Peak (absolute) High threshold value 3, for TX pattern.
Ignore on read
Peak (absolute) High threshold value 2, for TX pattern.
8.5.16 TDR High Threshold Register (TDRHT3)
This register allows configuring the threshold for finding the peaks of the reflected signal in the TDR test.
Table 8-45. TDR High Threshold Register (TDRHT3), address 0x0C09
BIT
NAME
15 Reserved
14:8 cfg_ptrn_High_th_5
7
Reserved
6:0 cfg_ptrn_High_th_4
DEFAULT
0,RO
0x2F,RW
0,RO
0x3A,RW
FUNCTION
Ignore on read
Peak (absolute) High threshold value 5, for TX pattern.
Ignore on read
Peak (absolute) High threshold value 4, for TX pattern.
8.5.17 TDR High Threshold Register (TDRHT4)
This register allows configuring the threshold for finding the peaks of the reflected signal in the TDR test.
Table 8-46. TDR High Threshold Register (TDRHT4), address 0x0C0A
BIT
NAME
15 Reserved
14:8 cfg_ptrn_High_th_7
7
Reserved
6:0 cfg_ptrn_High_th_6
DEFAULT
0,RO
0x1F,RW
0,RO
0x26,RW
FUNCTION
Ignore on read
Peak (absolute) High threshold value 7, for TX pattern.
Ignore on read
Peak (absolute) High threshold value 6, for TX pattern.
8.5.18 TDR Pattern Control Register 1 (TDRLCR1)
This register allows configuring the forward shadow values for the TDR test.
Table 8-47. TDR Pattern Control Register 1 (TDRLCR1), address 0x0C0B
BIT
15:12
11:9
8:5
4:0
NAME
Reserved
cfg_ptrn_fr_shdw_inc
cfg_ptrn_init_fr_shdw
cfg_ptrn_init_skip
DEFAULT
0,RO
0x1,RW
0x6,RW
0x10, RW
FUNCTION
Ignore on read
Forward shadow area from peak detection increment factor (X/128).
Forward shadow area from peak detection initial samples size.
Initial skip (ignore) samples number from Tx start.
Copyright © 2009, Texas Instruments Incorporated
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