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CDCE421RGET 数据表(PDF) 8 Page - Texas Instruments |
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CDCE421RGET 数据表(HTML) 8 Page - Texas Instruments |
8 / 30 page www.ti.com T0044-03 0 0 1 1 1 1 1 1 2 56 57 58 SDATA FOUT EnterRegister Read-BackMode Fetch EEPROM ContentWith 1 CLK st EEPROMContent 1 Bit Available After 1 FallingEdge st st 60 FallingEdge SwitchesBackInto NormalOperation th OutputOscillation OutputOscillation REGISTER DESCRIPTION CDCE421 SCAS842 – APRIL 2007 In the following table, the content of the output bit stream is summarized. Important to notice: bit 0 is clocked out first. OUTPUT BIT STREAM FUNCTION Bits[0:2] Revision identifier (MSB first) Bits[3:8] VCO calibration word Bit[9] EEPROM status: 0 = EEPROM has never been written 1 = EEPROM has been programmed before Bit[10] EEPROM lock: 0 = EEPROM can be rewritten 1 = EEPROM is locked, rewriting to the EEPROM is not possible any more Bits[11:18] Storage value, Word5 (MSB first) Bits[19:26] Storage value, Word4 (MSB first) Bits[27:34] Storage value, Word3 (MSB first) Bits[35:42] Storage value, Word2 (MSB first) Bits[43:50] Storage value, Word1 (MSB first) Bits[51:58] Storage value, Word0 (MSB first) Word 0: BIT NAME DESCRIPTION/FUNCTION TYPE RECOMMENDED VALUE 0 C0 Register selection W 0 1 C1 Register selection W 0 2 C2 Register selection W 0 3 SELVCO VCO select, 0 = VCO1, 1 = VCO2 W User 4 SELPRESC Prescaler setting, bit 0 W User 5 SELPRESC Prescaler setting, bit 1 W User 6 OUTSEL Output divider select, bit 0 W User 7 OUTSEL Output divider select, bit1 W User 8 OUTSEL Output divider select, bit 2 W User 9 DRVSEL Driver select, 0 = LVDS, 1 = PECL W User 10 ILFSEL Loop filter bias select W 0 4 Divide by value (SELPRESC 1, SELPRESC 0) Divide by 5 = (00), 3 = (01), 4 = (10), 2 = (11) 5 6 Output divider (OUTSEL2, OUTSEL1, OUTSEL0) Divide by 1 = (000), 2 = (001), 4 = (010), 8 = (011), 16 = (100), 32 = (101) 7 8 8 Submit Documentation Feedback |
类似零件编号 - CDCE421RGET |
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类似说明 - CDCE421RGET |
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