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AK2504A Datasheet(PDF) 6 Page - Asahi Kasei Microsystems |
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AK2504A Datasheet(HTML) 6 Page - Asahi Kasei Microsystems |
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6 / 30 page  ASAHI KASEI [AK2504A] MS0143-E-01 - 6 - 2004/01 PIN DESCRIPTION Receive No. Pin Name I/O Function 42 LOSTHR I Loss of Signal Threshold Control (See Table 15) The voltage forced on this pin controls the input loss-of-signal threshold. Two settings are provided by forcing VSS or VDD. 14 RLOL O Receive PLL Loss-of-Lock Active High alarm. If the recovered clock frequency is larger than approximately 0.5% of EXCLK, RLOL alarm goes High. 45 RTIP I Receive Tip Input Receive input for differential AMI signal. Requires a 1:1 transformer. 44 RRING Receive Ring Input Receive input for differential AMI signal. Requires a 1:1 transformer. 62 RLOS O Receive Loss-of-Signal. This pin is set high on loss of the incoming signal at RIN. 7 EXCLK I External Reference Clock. A valid DS3/STS-1/E3 clock must be provided at this input. The EXCLK frequency determines the operating frequency of the device. 20 RCLK O Recovered Clock. 22 RNDATA /LCV O Receive Negative Data/Line Code Violation Indicator This pin’s function depends on the input level. NRZ = Low : Receive Negative Data output NRZ = High : Bipolar Violation Output 1 bit period of High level signal is output if a bipolar violation not corresponding to the appropriate coding rule or a code error is detected in the incoming data stream. The violation pulse corresponding to the appropriate coding rule is removed from the incoming data. 21 RPDATA O Receive Positive Data This pin’s function depends on the input level. NRZ = low : Receive Positive Data output NRZ = high : NRZ data output 41 RCKPOL I RCLK Polarity select. RCKPOL=L : Received data is output on the rising edge of RCLK. RCKPOL=H : Received data is output on the falling edge of RCLK. 51 EQDIS I Equalizer Disable. When EQDIS=H, Equalizer is disable. 59 VDDA - Power Supply for ADC. +3.3 volts. 52 VDDV - Power Supply for VGA. +3.3 volts. 53 VSSV - Ground for VGA. 0 volts. 4 VDDP - Power Supply for PLL. +3.3 volts 5 VSSP - Ground for PLL. 0 volts. 54 VDDB - Power Supply for Bandgap Reference. +3.3 volts. 57 VSSB - Ground for Bandgap Reference. 0 volts. |
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