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DS26334 Datasheet(PDF) 11 Page - Dallas Semiconductor |
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DS26334 Datasheet(HTML) 11 Page - Dallas Semiconductor |
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11 / 121 page  DS26334 3.3V, 16-Channel, E1/T1/J1 Short/Long-Haul Line Interface Unit 11 of 121 NAME PIN TYPE FUNCTION RESREF R9 Analog input Resistor Reference. If fully internal receive impedance match is selected, a 16k Ω ±1% resistor to GND is needed. If not used, tie pin low. RRING1 A2 RRING2 C2 RRING3 H2 RRING4 N2 RRING5 R1 RRING6 R3 RRING7 R8 RRING8 R13 RRING9 T15 RRING10 P15 RRING11 J15 RRING12 D15 RRING13 B16 RRING14 B14 RRING15 B9 RRING16 B4 Analog input Receive Bipolar Ring for Channels 1–16. Receive analog input for differential receiver. Data and clock are recovered and output at RPOS/RNEG and RCLK pins, respectively. The differential inputs of RTIPn and RRINGn can provide internal impedance matching with external resistance for E1 75 Ω, E1 120Ω, T1 100Ω, or J1 110Ω. DIGITAL Tx/Rx TPOS1/TDATA1 F6 TPOS2/TDATA2 G7 TPOS3/TDATA3 J6 TPOS4/TDATA4 K6 TPOS5/TDATA5 L9 TPOS6/TDATA6 N5 TPOS7/TDATA7 P12 TPOS8/TDATA8 M11 TPOS9/TDATA9 L11 TPOS10/TDATA10 J11 TPOS11/TDATA11 G11 TPOS12/TDATA12 C14 TPOS13/TDATA13 F9 TPOS14/TDATA14 E7 TPOS15/TDATA15 N12 TPOS16/TDATA16 D5 I Transmit Positive Data Input for Channels 1–6. When DS26334 is configured in dual-rail mode, the data input to TPOSn is output as a positive pulse on the line (tip and ring). Transmit Data Input for Channels 1–16. When the device is configured in single-rail mode NRZ data is input to TDATAn. The data is sampled on the falling edge of TCLKn and encoded HDB3/B8ZS or AMI before being output to the line. TNEG1 C3 TNEG2 J14 TNEG3 J5 TNEG4 G10 TNEG5 M6 TNEG6 P6 Transmit Negative Data for Channels 1–16. When DS26334 is configured in dual-rail mode. The data input to TNEGn is output as a negative mark on the line. TPOS and TNEG in dual-rail mode result in positive and negative pulses sent on the line: TNEG7 P7 TPOSn TNEGn OUTPUT PULSE TNEG8 K9 0 0 Space TNEG9 L12 0 1 Negative mark TNEG10 J12 1 0 Positive mark TNEG11 H11 1 1 Space TNEG12 E13 TNEG13 G8 TNEG14 F7 TNEG15 C6 TNEG16 C5 I |
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