THCV217-THCV218_Rev.2.11_E

Copyright(C)2016 THine Electronics,Inc.

14

THine Electronics, Inc.

Security E

Pre-emphasis

Pre-emphasis can equalize severe signal degradation caused by long-distance or high-speed transmission.

The PRE pin selects the strength of pre-emphasis. See Table 4.

PRE

Description

H

w/ 100% Pre-emphasis

L

w/o Pre-emphasis

Table 4. Pre-emphasis function table

Power Down Function

Setting the PDN pin low places THCV217 in the power-down mode. All the internal circuitry turns off and the

TXmp/n (m=0, 1) outputs turn to CAVDL.

Setting the PDN pin low places THCV218 in the power-down mode. All the internal circuitry turns off and the

CMOS outputs drives low.