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SSI78P304ALow-Power T1/E1 Integrated Short HaulTransceiver with Receiver Jitter AttenuationRCLKRPOSRNEGRPOSRNEGHOST MODE'/ CLKE: 0, &r--HIWMODEFIGURE 4: SSI78P304A Receive Clock TimingTABLE 3: SSI78P304A Receive Timing CharacteristiCS (See Figure 4)Parameter Sym Min Typ1 Max UnitsReceive clock duty cycle RCLKd 40 - 60 %Receive clock pulse width DSX-1 tpw - 324 - nsCEPT tpw - 244 - nsRPOS / RNEG to RCLK DSX-1 tSUR - 274 - nsrising setup time CEPT tsuR - 194 - nsRCLK rising to RPOS / DSX-1 tHR - 274 - nsRNEG hold time CEPT tHR - 194 - ns1 Typical figures are at 25°C and are for design aid only; not guaranteed and not subject to production testing.TABLE 4: SSI78P304A Crystal Specifications (External)IParameter T1 E1Frequency 6.176 MHz 8.192 MHzFrequency Stability ±20 ppm @ 25° C ±20 ppm @ 25° CPullabilityEffective series resistance 400 Maximum±25 ppm from -40° C to + 85° C ±25 ppm from -40° C to + 85° C(Ref 25° C reading)(Ref 25° C reading)CL = 11 pF to 18.7 pF, +~F = 175 to 195 ppm CL = 11 pF to 18.7 pF, +~F = 95 to 115 ppmCL = 18.7 pF to 34 pF, -~F = 175 to 195 ppmCrystal cut AT ATCL = 18.7 pF to 34 pF, -~F = 95 to 115 ppm300 MaximumResonance Parallel ParallelMaximum drive level 2.0mW 2.0mWMode of operation Fundamental FundamentalCrystal holder HC49 (R3W), Co = 7 pF maximum HC49 (R3W), Co = 7 pF maximumC M= 17 pF typicalC M= 17 pF typical6-27