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AD9549APCBZ 数据表(PDF) 50 Page - Analog Devices |
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AD9549APCBZ 数据表(HTML) 50 Page - Analog Devices |
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50 / 76 page  AD9549 Rev. D | Page 50 of 76 Addr (Hex) Type1 Name Bit 7 Bit 6 Bit 5 Bit 4 Bit 3 BIt 2 Bit 1 Bit 0 Default (Hex) 0x01A6 M FTW0 (open-loop frequency tuning word) FTW0, Bits[47:0] LSB: Register 0x01A6 0x00 0x01A7 M 0x00 0x01A8 M 0x00 0x01A9 M 0x00 0x01AA M Startup cond. 0x01AB M Startup cond. 0x01AC and 0x01AD M Phase (open loop only) DDS phase word, Bits[15:0] 0x00 Reference selector/holdover 0x01C0 M Automatic control Holdover mode Reserved Automatic selector Automatic recover Automatic holdover 0x00 0x01C1 M Override Enable line card mode Enable ref input override REF_AB Enable holdover override Holdover on/off 0x00 0x01C2 Averaging window FTW windowed average size, Bits[3:0] 0x00 0x01C3 Reference validation Reserved Validation timer, Bits[4:0] 0x00 Doubler and output drivers 0x0200 HSTL driver OPOL (polarity) Reserved HSTL output doubler, Bits[1:0] 0x05 0x0201 CMOS driver CMOS mux 0x00 Monitor 0x0300 RO Status Reserved PFD freq. too high PFD freq. too low Freq. est. done Ref selected Free run Ph. lock detected Freq. lock detected N/A 0x0301 RO Reserved REFA valid REFA LOR REFA OOL REFB valid REFB LOR REFB OOL N/A 0x0302 RO IRQ status PFD freq. too high PFD freq. too low Freq. est. done Ref selected Free run Phase lock detected Freq. lock detected 0x00 0x0303 RO REFA valid REFA LOR REFA OOL REFB valid REFB LOR REFB OOL 0x00 0x0304 IRQ mask Reserved Ref changed Leave free run Enter free run 0x00 0x0305 Freq. est. done Phase unlock Phase lock Freq. Unlock Freq. lock 0x00 0x0306 Reserved REFA valid !REFA valid REFA LOR !REFA LOR REFA OOL !REFA OOL 0x00 0x0307 Reserved REFB valid !REFB valid REFB LOR !REFB LOR REFB OOL !REFB OOL 0x00 0x0308 S1 pin config REF? REF? LOR REF? OOL REF? not valid Phase lock Freq. lock Reserved IRQ 0x60 0x0309 S2 pin config REF? REF? LOR REF? OOL REF? not valid Phase lock Freq. lock Reserved IRQ 0xE0 0x030A S3 pin config REF? REF? LOR REF? OOL REF? not valid Phase lock Freq. lock Reserved IRQ 0x08 0x030B S4 pin config REF? REF? LOR REF? OOL REF? not valid Phase lock Freq. lock Reserved IRQ 0x01 0x030C Control Enable REFA LOR Enable REFA OOL Enable REFB LOR Enable REFB OOL Enable phase lock det. Enable frequency lock det. 0xA2 |
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