TMDS181: 4K signak problem

Part Number: TMDS181

Hi TI,

I detected a 4K signal problem,

Under default condition of TMDS181EVM,

Pin

Items

set

1

HDP_SRC

JP 1-2 for not used

J3

I2_EN_PIN

JP 2-3 for pin strap

J4

SCL

JP 1-2 for USB IF TO I2C

J6

SDA

JP 1-2 for USB IF TO I2C

J7

A1

NC for weak internal pulldown

(Normal Mode)

J8

VSADJ

JP 1-2 for 6.8KΩ

J11

SIG_EN

JP 2-3 for Signal Detect Enable

J12

EQ_SEL_A0

NC for Adaptive EQ

J14

TX_TERM_CLT

NC for auto select of term

J15

PRE_SEL

NC for 0 dB

J17

SWAP_POL

NC for normal

Input 4K signal(Non HDCP)  to the EVM, Undre Hot plug condition of the input HDMI cable.  

Some time The output was NG(May be Lower rate signal is detected)  as lower picture.

 


   This is OK signal(4K)

This  is NG output signal( When  a Display receive the signal, it cannot draw a picture.)  

Do you estimate the origin of the problem ?

  

Thanks and Best Regards,
Kobayashi,Toshi
Fuji Electronics Co.,LTD.