TLK6002 Datasheet, PDF (53/96 Pages) Texas Instruments – Dual Channel 0.47Gbps to 6.25Gbps Multi-Rate Transceiver

TLK6002
www.ti.com
SLLSE34 – MAY 2010
Table 3-13. SERDES_CONTROL_1
Address: 0x08
Default: 0x3D4C
BIT(s)
NAME
DESCRIPTION
8.14:12 EQPRE[2:0]
Serdes Rx precursor equalizer selection
000 = 1/9 cursor amplitude
001 = 3/9 cursor amplitude
010 = 5/9 cursor amplitude
011 = 7/9 cursor amplitude (Default 3’b011)
100 = 9/9 cursor amplitude
101 = 11/9 cursor amplitude
110 = 13/9 cursor amplitude
111 = Disable
8.11:10 CDRTHR[1:0]
Clock data recovery algorithm threshold selection
00 = Four vote threshold
01 = Eight vote threshold
10 = Sixteen vote threshold
11 = Thirty two vote threshold (Default 2’b11)
8.9:8 CDRFMULT[1:0]
Clock data recovery algorithm frequency multiplication selection
00 = First order. Frequency offset tracking disabled
01 = Second order. 1x mode (Default 2’b01)
10 = Second order. 2x mode
11 = Reserved
8.7:6 AGCCTRL[1:0]
Adaptive gain control loop
00 = Attenuator will not change after lock has been achieved, even if AGC becomes
unlocked
01 = Attenuator will not change when in lock state, but could change when AGC becomes
unlocked (Default 2’b01)
10 = Force the attenuator off.
11 = Force the attenuator on
8.5:4 AZCAL[1:0]
Auto zero calibration.
00 = Auto zero calibration initiated when receiver is enabled (Default 2’b00)
01 = Auto zero calibration disabled
10 = Forced with automatic update.
11 = Forced without automatic update
8.3 TX_PMA_BIT_ORDER Determines whether LSB or MSB of the parallel inputs to be sent out first on serial
transmit pins.
0 = TDx[19] or TDx[9] (MSB) is serially transmitted first
1 = TDx[10] or TDx[0] (LSB) is serially transmitted first (Default 1’b1)
8.2 RX_PMA_BIT_ORDER Determines whether serially received first bit to be sent out on LSB or MSB of the parallel
outputs.
0 = RDx[19] or RDx[9] (MSB) is serially received first
1 = RDx[10] or RDx[0] (LSB) is serially received first (Default 1’b1)
8.1 TX_INVPAIR
Transmitter polarity.
0 = Normal polarity. TXxP considered positive data and TXxN considered negative data
(Default 1’b0)
1 = Inverted polarity. TXxP considered negative data and TXxN considered positive data
8.0 RX_INVPAIR
Receiver polarity.
0 = Normal polarity. RXxP considered positive data. RXxN considered negative data
(Default 1’b0)
1 = Inverted polarity. RXxP considered negative data. RXxN considered positive data
ACCESS
RW
RW
RW
RW
RW
RW
RW
RW
RW
Table 3-14. SCRAMBLER_CONTROL
Address: 0x09
BIT(s)
NAME
9.15 TX_SCRAMBLER_EN
9.14:8 TX _SCRAMBLER_SEED[6:0]
9.7 RX_DESCRAMBLER_EN
9.6:0 RX_DESCRAMBLER_SEED[6:0]
Default: 0x0000
DESCRIPTION
0 = Disables scrambler on the transmit datapath (Default 1’b0)
1 = Enables scrambler on the transmit datapath
7 bit scrambler seed used when TX scrambler is enabled.
(Default 7’b0000000)
0 = Disables De-scrambler on the receive datapath (Default 1’b0)
1 = Enables De-scrambler on the receive datapath
7 bit De-scrambler seed used when RX De-scrambler is enabled.
(Default 7’b0000000)
ACCESS
RW
RW
RW
RW
Copyright © 2010, Texas Instruments Incorporated
Submit Documentation Feedback
Product Folder Link(s): TLK6002
PROGRAMMERS REFERENCE
53