STDVE001AQTR STMicroelectronics, STDVE001AQTR Datasheet - Page 18

• Manufacturer Part Number: STDVE001AQTR
• Description: IC EQUALIZER TMDS/HDMI 48-QFN
• Manufacturer: STMicroelectronics

Specifications of STDVE001AQTR

• Applications: TV
• Interface: I²C
• Voltage - Supply: 3.135 V ~ 3.465 V
• Package / Case: 48-QFN
• Mounting Type: Surface Mount
• Lead Free Status / RoHS Status: Lead free / RoHS Compliant
• Other names: 497-8383-2

Functional description
5.8
5.9
18/48
The output voltage swing depends on 3 components: supply voltage (V
resistor (R
termination resistor can vary from 50
The voltage on the output is given by:
V
The variation on I
the HDMI specification under all conditions.
This is achieved when:
400 mV ≤ I
Timing between HPD and DDC
It is important to ensure that the I
complete.
As soon as the discovery is finished by the HPD detection, the configuration data is
exchanged between a source and sink through the I
DDC interface is ready for communication as soon as the power supply to the chip is
present and stable. When the desired port is enabled and the chip is out of shutdown mode,
the I
Thus, as soon as the HPD detection sequence is complete, the DDC interface can be
readily used. There is no delay between the HPD detection and I
ready.
CEC
The CEC channel is a dedicated single pin bus and electrically translates to a bi-directional
buffer used to ensure that the electrical specs of the CEC are met even with high
capacitance on the single CEC line. The pull-up resistor of 26 KΩ is integrated on either
sides of the buffer. The CEC is used for AV control of the electronic devices connected in
a HDMI cluster. The drive of the buffer is set to meet the requirements of the CEC. This is
optionally used for higher-level user functions such as automatic set-up tasks or tasks
typically associated with infrared remote control usage.
The CEC line is continuously monitored during the power-on state and is not monitored
during powered-off state. In powered off state, the CEC line should not be pulled low and it
should not affect the CEC communication between other devices. The maximum
capacitance on the CEC lines can be 7.2 nF.
supply
2
C DDC lines can be used for communication.
- I
drive
T
drive
) and current drive (I
x R
x R
T
drive
.
T
≤ 600 mV with typical value centered at 500 mV.
must be controlled to ensure that the voltage on HDMI output is within
Doc ID 14855 Rev 4
drive
2
C DDC interface is ready by the time the HPD detection is
). The supply voltage can vary from 3.3 V
Ω ±
10%.
2
C DDC interface. The STDVE001A
2
C DDC interface to be
supply)
, termination
±
STDVE001A
5%,