TDA19997HL NXP Semiconductors, TDA19997HL Datasheet - Page 10

• Manufacturer Part Number: TDA19997HL
• Description: Smart Hdmi 1.4 4 1 Switch With Auto-adaptive Equalizer
• Manufacturer: NXP Semiconductors

NXP Semiconductors
Table 4.
[1]
[2]
TDA19997HL_2
Product data sheet
Functions
+5 V signal detection
RXx_HPD (if 5 V)
RXx_DDC_DAT; RXx_DDC_CLK (if 5 V)
EDID DDC read (if 5 V)
EDID I
OUT_DDC_DAT; OUT_DDC_CLK
INT_N management
Termination resistors
Activity detection
Equalizer (when active)
TMDS buffer extended mode
TMDS output (if active)
Configuration register read/write
Configuration nonvolatile memory download
Configuration nonvolatile memory write
Nonvolatile memory.
x = A, B, C or D.
2
C-bus write (If 5 V)
Power management
8.10 Power management
[2][3]
8.9 HDMI output
[3]
The TDA19997HL HDMI output port is only activated when data is detected on the
selected input.
HDMI output can be switched off (high-impedance) using an I
The following five power modes are available:
•
•
•
•
•
•
[3]
Idle mode: HDMI output is either fixed at a constant value (fail-safe protection) or
high-impedance. Configuration is performed using an I
fixed at a constant value, it creates a voltage difference in the differential pairs and
stabilizes the receiver differential amplifier. The disadvantage of this protection
against noise is increased power consumption (current from switch and pull-up on
receiver side). If the two differential output pairs are high-impedance, the receiver
differential pair is common mode (receiver pull-up). The receiver differential amplifier
is not stable and does not need any additional power (no current from switch).
Operating mode: the device is fully functional
Power-off mode: no supplies are available
EDID-only mode: only +5 V from the source available
Power-down mode: all supplies are available and pin PD is HIGH.
Idle mode: all supplies are available and there is no HDMI input. As a power saving
feature, Idle mode is automatically selected when there is no activity on the inputs.
When activity is detected, Operating mode wake-up is automatically selected
[5][3]
Rev. 02 — 22 December 2009
Smart HDMI 1.4 (4 : 1) switch with auto-adaptive equalizer
Mode
EDID-only
n/a
[1]
on
[1]
off
off
off
off
off
off
off
off
off
off
off
Power-down
on
[4]
[4]
[4]
on
off
on
off
off
off
off
off
on
on
off
2
Idle
on
[4]
[4]
[4]
on
[4]
on
[4]
[4]
[4]
[1]
[4]
on
on
on
C-bus bit. When output is
2
TDA19997HL
C-bus bit or using pin PD.
© NXP B.V. 2009. All rights reserved.
Operating
on
[4]
[4]
[4]
on
[4]
on
[4]
[4]
[4]
[1]
[4]
on
on
on
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