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CDCE421RGET Datasheet(PDF) 5 Page - Texas Instruments |
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CDCE421RGET Datasheet(HTML) 5 Page - Texas Instruments |
5 / 30 page www.ti.com Power Up Reset Completed SDATA = 111011 SDATA = 111 0000 0000 SDATA = 111 1111 0000 SDATA = 111 0000 0000 SDATA = 111 0101 0101 SDATA = 111 1111 1111 SDATA = 001100 SDATA = 100 xxxxxxxx SDATA = 000 xxxxxxxx SDATA = 010 xxxxxxxx SDATA = 110 xxxxxxxx SDATA = 001 xxxxxxxx SDATA = 101 xxxxxxxx PowerUp: Read EEPROM& Configure State1:IDLE Normal Operation State2: Programming Mode 11Bit Written th 11Bit Written th 11Bit Written th 11Bit Written th 11Bit Written th 11Bit Written th Write WORD0 Write WORD1 Write WORD2 Write WORD3 Write WORD4 Write WORD5 State4: Programming EEPROM Locking State3: Programming EEPROM NoLocking 60 th Clock Applied State5: ReadBack Mode F0016-02 CDCE421 SCAS842 – APRIL 2007 SDATA FUNCTION 001 xxxx xxxx Write to Word4 (State 2)(1) (2) (3) 101 xxxx xxxx Write to Word5 (State 2)(1) (2) (3) 111 xxxx xxxx State machine jump: All other patterns not defined as follows cause an exit to normal mode. 111 0101 0101 Jump: Enter EEPROM programming with EEPROM lock (State 2 → State 3) 111 1111 0000 Jump: Enter EEPROM programming without EEPROM lock (State 2 → State 4) 111 0000 0000 Jump: Exit EEPROM programming (State 3 or State 4 → State 1) NOTE: In States 2, 3, 4, and 5, the signal pin CE is disregarded and has no influence on power down. Figure 2. State Flow-Diagram of Single-Pin Interface 5 Submit Documentation Feedback |
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