TDA19989 NXP Semiconductors, TDA19989 Datasheet - Page 24

• Manufacturer Part Number: TDA19989
• Description: 150 MHz pixel rate HDMI 1.3 transmitter
• Manufacturer: NXP Semiconductors

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NXP Semiconductors
TDA19989_1
Preliminary data sheet
As long as the receiver is connected to the transmitter and powered-up, bit RXS_FIL is set
to logic 1.
As soon as the cable is unplugged or receiver side powered off (assuming in this case that
V
value of bit RXS_FIL to logic 0 (See
unnecessary video content.
This feature is very useful when the receiver recovers 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 chip restarts sending video.
Table 19.
Remark: According to the HDMI specification, only the HPD interrupt allows the
application to read the EDID. The RxSense interrupt is not mandatory to initialize the
EDID reading procedure.
Average voltage
(Vinp_rxs + Vinn_rxs) / 2
V ≥ 1 V
0.8 V < V < 1 V
V ≤ 0.8 V
Fig 15.
CC
is switched off), the RxSense generates an interrupt inside TDA19989, changing the
Receiver sensitivity detection
Receiver detection according to averaged terminal voltage
Rev. 01 — 15 February 2010
Vinp_rxs
Vinn_rxs
HDMI cable
bit RXS_FIL: receiver
powered on
1
undefined
0
I_transmit
HDMI 1.3 transmitter with HDCP and CEC support
Table
35 kΩ
35 kΩ
19). This allows the application to stop sending
pole τ =
80 ns
RECEIVER
0.935 V ±4%
R pu
INTERNAL
BANDGAP
V
DD
1.8 V
power_down
R pu
bit RXS_FIL: receiver
powered off
0
0
0
TDA19989
RXS_FIL
001aal267
V
CC
TDA19989
© NXP B.V. 2010. All rights reserved.
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