THCV236 datasheet(13/68 Pages) CEL

13 / 68 page

THCV235_THCV236_Rev.3.40_E

THine Electronics, Inc.

13/68

Security E

Functional Overview

With High Speed CML SerDes, proprietary encoding scheme and CDR (Clock and Data Recovery)

architecture, the THCV235 and THCV236 enable transmission of 24/30bit video data, 2bits of user defined data,

synchronizing signals HSYNC,VSYNC and DE(Data Enable) as well as any data (up to 35 bit) through

Main-Link by single differential pair cable with minimal external components. In addition, the THCV235 and

THCV236 have Sub-Link which enables bi-directional transmission of 2-wire serial interface signals, GPIO

signals and also HTPDN/LOCKN signals for Main-Link through the other 1-pair of CML-Line. It does not need

any external frequency reference, such as a crystal oscillator. The THCV235 - THCV236 system is able to watch

and control peripheral devices via 2-wire serial interface or GPIOs. They also can report interrupt events caused

by change of GPIO inputs and internal statuses.

Functional Description

Internal Reference Output/Input Function (CAPOUT, CAPINA, CAPINP)

An internal regulator produces the 1.2V (CAPOUT). This 1.2V linear regulator can’t supply any other

external loads. Bypass CAPOUT to GND with 10uF.

CAPINP (THCV235 only) supplies reference voltage for internal PLL, and CAPINA supplies reference

voltage for any internal analog circuit. Bypass CAPINP/CAPINA to GND with 0.1uF to remove high frequency

noise. CAPOUT, CAPINA and CAPINP must be tied together.

Power supply AVDD is supposed to be stabilized with de-coupling capacitor and series noise filter (for example,

ferrite bead).

Figure 1. Connection of CAPOUT, CAPINA, CAPINP and Decoupling Capacitor

Power Down (PDN1, PDN0)

PDN1 and PDN0 turn off internal circuitry of Main-Link and Sub-Link separately.

Table 3. Power Down Setting

PDN1

PDN0

Operation

Both Main-Link and Sub-Link power down

Only Main-Link is active

Only Sub-Link is active

Both Main-Link and Sub-Link active

THCV236 Datasheet(PDF) 13 Page - California Eastern Labs