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XRT83SL34IV Datasheet(PDF) 8 Page - Exar Corporation |
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XRT83SL34IV Datasheet(HTML) 8 Page - Exar Corporation |
8 / 80 page XRT83SL34 QUAD T1/E1/J1 SH TRANSCEIVER WITH CLOCK RECOVERY AND JITTER ATTENUATOR REV. P1.0.8 PRELIMINARY 5 RRING_0 RRING_1 RRING_2 RRING_3 10 22 81 93 I Receiver Differential Ring Negative Input for Channel _0 Negative differential receive input from the line. Receiver Differential Ring Negative Input for Channel _1 Receiver Differential Ring Negative Input for Channel _2 Receiver Differential Ring Negative Input for Channel _3 RXMUTE RDY_DTACK 73 73 I O Receive Muting - Hardware mode Connecting this pin ‘High’ will mute (force to ground) the outputs RPOS_n/ RNEG_n when a LOS condition occurs, to prevent data chattering. This pin is internally pulled "low" consequently muting is normally disabled. NOTES: 1. Internally pulled "Low" with 50k Ω resistor. 2. In Hardware mode, all receive channels share the same RXMUTE control function. Ready Output (Data Transfer Acknowledge Output) - Host mode See “Ready Output (Data Transfer Acknowledge Output) - Host Mode” on page 8. RXRES0 RXRES1 108 109 I Receive External Resistor Control Pins - Hardware mode Receive External Resistor Control Pin 0 Receive External Resistor Control Pin 1 These pins are used to determine the value of the external Receive fixed resistor according to the following table: NOTE: These pins are internally pulled “Low” with 50k Ω resistor. RCLKE µPTS1 106 I Receive Clock Edge - Hardware Mode Set this pin "High" to sample RPOS_N/RNEG_n on the falling edge of RCLK_n. With this pin tied "Low", output data are updated on the rising edge of RCLK_n. Microprocessor Type Select Input pin 1 - Host mode This pin along with µPTS2 (pin 107) is used to select the microprocessor type. See “Microprocessor Type Select Input Pins - Host Mode:” on page 9. NOTE: This pin is internally pulled "Low" with a 50k Ω resistor. SIGNAL NAME PIN #TYPE DESCRIPTION R equired Fixed External RX Resistor No External Fixed R esistor 240 Ω 210 Ω 150 Ω RXRES0 0 1 0 1 RXRES 1 0 0 1 1 |
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