S2068TB Applied Micro Circuits Corporation, S2068TB Datasheet
S2068TB
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DEVICE SPECIFICATION DUAL GIGABIT ETHERNET TRANSCEIVER DUAL GIGABIT ETHERNET TRANSCEIVER FEATURES • Functionally compliant with IEEE 802.3z Gigabit Ethernet Applications • 1250 MHz (Gigabit Ethernet) operating rate – Half rate operation • Dual Transmitter incorporating phase-locked loop (PLL) clock synthesis ...
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S2068 Figure 2. S2068 Input/Output Diagram RESET RATE REFCLK CLKSEL TMODE TCLKO DINA[0:9] 10 TBCA DINB[0:9] 10 TBCB COM_DETA DOUTA[0:9] 10 RBC1/0A COM_DETB DOUTB[0:9] 10 RBC1/0B TESTMODE TESTMODE1 CMODE 2 DUAL GIGABIT ETHERNET TRANSCEIVER LPEN October 13, 2000 / Revision ...
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DUAL GIGABIT ETHERNET TRANSCEIVER Figure 3. Transmitter Block Diagram RATE REFCLK CLKSEL TMODE 10 DINA[0:9] FIFO (input TBCA 10 DINB[0:9] FIFO (input TBCB October 13, 2000 / Revision D DIN PLL 10x/20x 10 Shift Reg 10 ...
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S2068 Figure 4. Receiver Block Diagram CMODE RATE REFCLK 2 RBC1/0A COM_DETA FIFO (output DOUTA[0:9] 2 RBC1/0B COM_DETB FIFO (output) 10 DOUTB[0:9] 4 DUAL GIGABIT ETHERNET TRANSCEIVER TMODE DOUT CRU 10 Serial- Parallel DOUT CRU 10 Serial- Parallel ...
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DUAL GIGABIT ETHERNET TRANSCEIVER TRANSMITTER DESCRIPTION The transmitter section of the S2068 contains a single PLL which is used to generate the serial rate transmit clock for all transmitters. Transmitter functionalities shown schematically in Figure 3. Two channels are provided ...
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S2068 The TBC must be frequency locked to REFCLK, but may have an arbitrary but fixed phase relationship. Adjustment of internal timing of the S2068 is per- formed during reset. Once synchronized, the S2068 can tolerate up to 3ns of ...
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DUAL GIGABIT ETHERNET TRANSCEIVER The frequency of the reference clock must be either 1/10 the serial data rate, CLKSEL = 0, or 1/20 the serial data rate, CLKSEL = 1. Note that in both cases, the frequency of the parallel ...
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S2068 Serial-to-Parallel Conversion Once bit synchronization has been attained by the S2068 CRU, the S2068 must synchronize to the 10 bit word boundary. Word synchronization in the S2068 is accomplished by detecting and aligning to the 8B/10B K28.5 codeword. The ...
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DUAL GIGABIT ETHERNET TRANSCEIVER Table 5. Transmitter Input Signals Assignment and Descriptions ...
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S2068 Table 7. Receiver Output Signals Assignment and Descriptions ...
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DUAL GIGABIT ETHERNET TRANSCEIVER Table 8. Receiver Input Signals Assignment and Descriptions ...
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S2068 Table 11. Power and Ground Signals Assignment and Descriptions ...
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DUAL GIGABIT ETHERNET TRANSCEIVER Figure 7. S2068 Pinout (Bottom View ...
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S2068 Figure 8. S2068 Pinout (Top View ...
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DUAL GIGABIT ETHERNET TRANSCEIVER Figure 9. 156 TBGA Package Thermal Management Device S2068 October 13, 2000 / Revision 19.8˚C/W 3.5˚C/W S2068 15 ...
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S2068 Figure 10. Transmitter Timing (REFCLK Mode, TMODE = 0) REFCLK DINx[0:9] SERIAL DATA OUT Table 12. S2068 Transmitter Timing (REFCLK Mode, TMODE = ...
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DUAL GIGABIT ETHERNET TRANSCEIVER Table 14. Transmitter Timing ...
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S2068 Figure 13. Receiver Timing (Full Clock Mode, CMODE = 1) SERIAL DATA IN RBC0x RBC1x DOUTx[0:9], COM_DETx Table 16. S2068 Receiver Timing (Full Clock Mode, CMODE = ...
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DUAL GIGABIT ETHERNET TRANSCEIVER Table 18. S2068 Receiver Timing ...
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S2068 Table 19. Absolute Maximum Ratings ...
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DUAL GIGABIT ETHERNET TRANSCEIVER Table 22. DC Characteristics ...
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S2068 OUTPUT LOAD The S2068 serial outputs require a resistive load to set the output current. The recommended resistor value is 4 ground. This value can be varied to adjust drive current, signal voltage swing, and power usage ...
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DUAL GIGABIT ETHERNET TRANSCEIVER Figure 22. Loop Filter Capacitor Connections October 13, 2000 / Revision D 270 CAP1 22 nf CAP2 270 S2068 S2068 23 ...
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... Applied Micro Circuits Corporation • 6290 Sequence Dr., San Diego, CA 92121 Phone: (858) 450-9333 • (800) 755-2622 • Fax: (858) 450-9885 AMCC reserves the right to make changes to its products or to discontinue any semiconductor product or service without notice, and advises its customers to obtain the latest version of relevant information to verify, before placing orders, that the information being relied on is current ...