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TLK6002 Datasheet(PDF) 32 Page - Texas Instruments |
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TLK6002 Datasheet(HTML) 32 Page - Texas Instruments |
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32 / 96 page  20-bit Latency Counter Start Counter Stop Counter Clock Synthesizer Selected Reference Clock 10 2:1 MUX Pattern Generator 10 TCLK 10-bit TDA_[19:0] MUX TXCLK _A 10-bit 20-bit 10-bit 10-bit 10-bit TXAN TXAP Parallel to Serial ¼, ½ & Full rate set RDA_[19:0] Serial to Parallel RXAP RXAN RXCLK _A COMMA Detect& 8B/10B Decoding EQ 10-bit 10-bit 10-bit 10-bit Pattern Verifier TLK6002 SLLSE34 – MAY 2010 www.ti.com The locations where the comma transmission and reception are measured in TLK6002 are shown in Figure 2-12. Figure 2-12. Location of TX and RX Comma Character Detection (Only Channel A Shown) 2.20 CPRI/OBSAI Automatic Rate Sense (ARS) Function An automatic rate sense (ARS) function is implemented in TLK6002 to facilitate determination of the incoming CPRI/OBSAI serial link rate per channel. When ARS is enabled, only three device input reference clock frequencies are supported: 122.88, 153.6, and 307.2 MHz. ARS should not be enabled unless one of these three frequencies is available on either REFCLK_0_P/N or REFCLK_1_P/N. The ARS function per channel can operate off of either reference clock (REFCLK_0_P/N or REFCLK_1_P/N), and is selected through device pins REFCLK_A_SEL for Channel A, and REFCLK_B_SEL for Channel B (or alternatively mdio registers). The reference clock rate selection is selected through channel A or B MDIO register bits (ARS_REF_FREQ[1:0], register bits 11.15:14), and must be programmed for proper ARS operation (unless the default values matches the reference clock input frequency). 32 Description Copyright © 2010, Texas Instruments Incorporated Submit Documentation Feedback Product Folder Link(s): TLK6002 |
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