TDA9983BHW/15/C1;5 NXP Semiconductors, TDA9983BHW/15/C1;5 Datasheet - Page 24

• Manufacturer Part Number: TDA9983BHW/15/C1;5
• Description: IC HDMI TX 150MHZ 80-HTQFP
• Manufacturer: NXP Semiconductors
• Type: Transmitterr

Specifications of TDA9983BHW/15/C1;5

• Applications: Recorders, Set-Top Boxes
• Mounting Type: Surface Mount
• Package / Case: 80-TQFP Exposed Pad, 80-eTQFP, 80-HTQFP, 80-VQFP
• Lead Free Status / RoHS Status: Lead free / RoHS Compliant
• Other names: 935285482551

NXP Semiconductors
TDA9984A_4
Product data sheet
8.4.2 TMDS output buffers
As long as the receiver is connected to the transmitter and powered up, bit RXS_FIL is set
to logic 1 (see register INT_FLAGS_3, page 00h, address 12h).
As soon as the cable is unplugged or the receiver side is powered off (assuming in this
case that V
changing the value of bit RXS_FIL to logic 0. This allows the application to stop sending
unnecessary video content.
This feature is very useful when the receiver has been recovered from an off-state and
does not generate a HPD transition HIGH-to-LOW-to-HIGH. In this particular case,
RxSense will generate an interrupt so that the TDA9984A restarts sending video.
Remark: According to the HDMI specification, only the HPD interrupt allows the
application to read the EDID. RxSense is not mandatory to initialize the EDID reading
procedure.
The TMDS output amplitude can be adjusted via an external resistor connected between
pins EXT_SWING and V
It is strongly recommended to use R
500 mV. By doing so, the TDA9984A shall meet the minimum low-level output voltage as
per HDMI specification, Rev 1.3a table 4-15.
Fig 14. Receiver sensitivity detection
DD
is switched off), the RxSense generates an interrupt inside the TDA9984A,
Rev. 04 — 15 January 2009
TRANSMITTER
DDH(3V3)
D
D
; see
HDMI 1.3 transmitter with 1080p upscaler embedded
EXT_SWING
Figure
Z
15.
0
= 610
RECEIVER
R T
1 % to get a nominal swing of
001aag601
R T
V
DDA
TDA9984A
© NXP B.V. 2009. All rights reserved.
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