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CDCE421_15 Datasheet(Hoja de datos) 5 Page - Texas Instruments

No. de Pieza. CDCE421_15
Descripción  Fully Integrated Wide-Range, Low-Jitter, Crystal-Oscillator Clock Generator
Descarga  24 Pages
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Fabricante  TI1 [Texas Instruments]
Página de inicio  http://www.ti.com
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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
www.ti.com..................................................................................................................................................... SCAS842B – APRIL 2007 – REVISED JANUARY 2009
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 1111 0000
Jump: Enter EEPROM programming without EEPROM lock (State 2
→ State 3)
111 0101 0101
Jump: Enter EEPROM programming with 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
Copyright © 2007–2009, Texas Instruments Incorporated
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Product Folder Link(s): CDCE421




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