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XRT83L34 Datasheet(PDF) 11 Page - Exar Corporation |
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XRT83L34 Datasheet(HTML) 11 Page - Exar Corporation |
11 / 99 page xr XRT83L34 QUAD T1/E1/J1 LH/SH TRANSCEIVER WITH CLOCK RECOVERY AND JITTER ATTENUATOR REV. 1.0.1 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 Select/Microprocessor Type Select Input pin: The exact function of this input pin depends upon whether the XRT83L34 device has been configured to operate in the HOST or Hardware Mode, as described below. Hardware Mode Operation - Receive Clock Edge Select Input pin - RCLKE: This input pin permits the user to configure the Receive Section (of each channel within the XRT83L34 device) to update the data (that is output via the RPOS_n/RDATA_n and RNEG_n/LCV_n output pins) upon either the ris- ing edge or falling edge of the RCLK_n output clock signal, as depicted below. LOW - Configures all four channels to update the RPOS_n/RDATA_n and RNEG_n/LCV_n output pins upon rising edge of RCLK_n. HIGH - Configures all four channels to update the RPOS_n/RDATA_n and RNEG_n/LCV_n output pins upon the falling edge of RCLK_n. HOST Mode Operation - Microprocessor Type Select Input pin # 1: This pin is used to select the microprocessor type. See “Microprocessor Type Select Input Pins/Receive Clock Edge Select/Transmit Clock Edge Select Input Pin:” on page 17. NOTE: This pin is internally pulled "Low" with a 50k Ω resistor. SIGNAL NAME PIN #TYPE DESCRIPTION Required Fixed External RX Resistor No External Fixed Resistor 240Ω 210Ω 150Ω RXRES0 0 1 0 1 RXRES1 0 0 1 1 |
Similar Part No. - XRT83L34_05 |
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Similar Description - XRT83L34_05 |
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