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CDCDLP223 Datasheet(PDF) 2 Page - Texas Instruments |
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CDCDLP223 Datasheet(HTML) 2 Page - Texas Instruments |
2 / 10 page www.ti.com FUNCTIONAL BLOCK DIAGRAM XIN 100Mhz 300Mhz 20Mhz VSS VDD SSCPLL 1 OUT =100Mhz –0.5%SSC 2-WireSerial Interface Control Logic LVTTL Crystal Oscillator 20Mhz XOUT SCLK SDATA IREF IDO EN VDD HCLKout HCLKout SSCPLL 2 OUT =200-400Mhz ±1.0%and ±1.5%SSC 150KW VDD 150KW CDCDLP223 SCAS836 – DECEMBER 2006 TERMINAL FUNCTIONS TERMINAL PIN TYPE DESCRIPTION XIN 1 I Crystal oscillator input for 20-MHz crystal in parallel resonance XOUT 2 O Crystal oscillator output for 20-MHz crystal in parallel resonance SDATA 9 I/O Open drain Data I/O, 2-wire serial interface controller, internal 1-M Ω pullup SCLK 10 I Interface Clock Clock input, 2-wire serial interface controller, internal 1-M Ω pullup 20 MHz 5 O LVTTL Clock output, 20 MHz (buffered output from crystal oscillator) 100 MHz 18 O HCLK Clock output for XDR clock generator 100 MHz 17 O HCLK Clock output for XDR clock generator 300 MHz 14 O HCLK Clock output for DMD system 300 MHz 13 O HCLK Clock output for DMD system VDD 4,11,19 Power 3.3 V Power supply VSS 3,6,12,15,16 Ground Ground IREF 20 O RREF to GND IREF pin for HCLK output drive-current biasing Output enable, 20 MHz, 100 MHz and 200–400 MHz outputs, 150 k Ω pullup, default = EN 7 I LVTTL logic high Sets 2-wire serial interface ID address bit A0, 150 k Ω pull-up resistor, default = logic IDO 8 I LVTTL high Table 1. EN Pin (20 MHz, 100 MHz and 300 MHz Clocks) EN PIN DESCRIPTION 1 All HCLK outputs, and 20-MHz outputs enabled, detailed device configurations are determined by 2-wire serial interface settings. 0 All HCLK = true Hi-Z, both PLLs are powered down and 20-MHz output in Hi-Z and Crystal Oscillator disabled, EN overrides 2-wire serial interface settings. 2 Submit Documentation Feedback |
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