TLK6002 datasheet(20/96 Pages) TI

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TLK6002

SLLSE34 – MAY 2010

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2.5

16-bit SDR (Single Data Rate) Mode (8b/10b Encoder/Decoder Enabled)

Channel A TX: TDA_[18:10,8:0]

→ TXAP/N (Using TXCLK_A). RX: RXAP/N → RDA_[19:0] (Using

RXCLK_A).

Channel B TX: TDB_[18:10,8:0]

→ TXBP/N (Using TXCLK_B). RX: RXBP/N → RDB_[19:0] (Using

RXCLK_B).

The 16 Bits (two symbols) of unencoded (TX) or decoded (RX) data are transferred per parallel interface

clock cycle. Symbols are defined by a group of 9 parallel bits comprising of a K character control bit and a

byte of data (plus a high true disparity error or invalid symbol bit in RX only on RD*_[19] and RD*_[9]).

Please note that four symbols are shown in Figure 2-1: Data0[18:10]={Control Bit, Data[7:0]}, Data0[8:0]

={Control Bit, Data[7:0]}, Data1[18:10] ={Control Bit, Data[7:0]}, Data1[8:0] ={Control Bit, Data[7:0]}.

TXDA_[19], TXDA_[9], TXDB_[19], and TXDB_[9] are unused, and should be grounded in this application

mode. See Appendix C for a full list of control characters supported in the 8b/10b encoder/decoder.

Symbol Transmission Order:

When 3.5/3.4 = 0: Data0[18:10] is the first encoded transmitted or decoded received symbol. Data0[8:0] is

next, followed by Data1[18:10].

When 3.5/3.4 = 1: Data0[8:0] is the first encoded transmitted or decoded received symbol. Data0[18:10] is

next, followed by Data1[8:0].

Bit Transmission Order within a Symbol:

Control Character Bits are always on TD*_[18], TD*_ [8], RD*_[18], RD*_[8]

Data bytes are always on TD*_[17:10], TD*_[7:0], RD*_[17:10], RD*_[7:0].

The most significant bit of the data byte is always on TD*_[17], TD*_[7], RD*_[17], RD*_[7], and is bit "H"

in Figure 2-2.

When 8.3/8.2 = 1, The "a" bit in Figure 2-2 is serially transmitted first or received first (typical case, shown

below) per symbol.

When 8.3/8.2 = 0, The "j" bit in Figure 2-2 is serially transmitted first or received first (atypical case,

reverse from order Figure 2-2) per symbol.

Figure 2-2. 16-bit SDR Parallel Interface Mode (Serial Bit Order)

Description

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