THCV217_16 Datasheet, PDF (26/35 Pages) THine Electronics, Inc. – V-by-One HS High-speed Video Data Transmitter and Receiver

Lock and Unlock Sequence
VDL
CAVDL _1.5v
CPVDL
DVDH
CLKIN
Power On
Rx/Gx/Bx
CONTy
HTPDN
PDN
Low-level
tTPD
Data Pattern
LOCKN
TXn
x=29-20,19-10
y=22,21,12,11
n=1,0
tTPLL0
tTNP1
Fix to CAVDL
CDR Training ALN Training
pattern
Pattern
tTNP0
Normal
pattern
CDR Training
pattern
VDL
CAVDL
DVDH
PDN
1.5v
Power On
tRPD
tRHPD0
HTPDN
tTPLL1
Normal
pattern
tRHPD1
RXn
CDR Training ^{ALN Training}
Pattern
Pattern
tRPLL0
Normal
pattern
tRPLL1
LOCKN
CLKOUT
Low
Rx/Gx/Bx
CONTy
Low
tRLCK0
tRLCK1
Low
Valid Data
Pattern
Low
Figure 15. THCV217 and THCV218 Lock and Unlock Sequence
tTPD and tRPD minimum is 0sec; therefore, PDN can be applied at the same time as VDL, CAVDL, CPVDL
and DVDH. tTPLL0 is the time from “both PDN=High and HTPDN=Low“ moment to Training pattern ignition.
HTPDN could transit from High to Low under PDN=High condition at THCV217, which is different from what
Figure 15 indicates but is natural situation.
Note:
When change and discontinuation occur in the clock frequency to THCV217, in order to collateralize
the operation after clock frequency change or return, please insert a Low pulse to the PDN pin of
THCV218 to reset the internal PLL.
THCV217-THCV218_Rev.2.11_E
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