THCV217_16 Datasheet, PDF (16/35 Pages) THine Electronics, Inc. – V-by-One HS High-speed Video Data Transmitter and Receiver

DGLOCK
In order to reduce the number of cables needed for HTPDN and LOCKN in multiple-Rx chip configuration,
THCV218 is equipped with the DGLOCK pin. When all the DGLOCK pins are connected as in Figure 9, the
connected Rx chips can share the CDR lock status, making all the Rx chips in the same operation status.
V-by-One
Tx
HTPDN
LOCKN
RX0p/n
RX1p/n
RX2p/n
RX3p/n
HTPDN
LOCKN _V-by-One
Rx
DGLOCK
Open
Open
HTPDN
LOCKN
V-by-One
Rx
DGLOCK
Figure 9. Usage of DGLOCK in multiple-Rx configuration
PLL Frequency Range Select
The THCV218’s PLL input pin selects the operating frequency range of THCV218. Table 6 shows the
selectable frequency ranges for operation modes.
Operation Mode
PLL
CLKOUT
H
Dual-in/Dual-out
L
20 to 40MHz
40 to 85MHz
H
Dual-in/Single-out
L
Forbidden
40 to 170MHz
H
Single-in/Single-out
L
20 to 40MHz
40 to 85MHz
Table 6. Frequency range select
THCV217-THCV218_Rev.2.11_E
16
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