User's Guide
SLVU485 – June 2011
TPD12S015A EVM
Introduction
The TPD12S015A is an integrated HDMI
companion chip solution. The device pin mapping
matches the HDMI Type D or Type C connector
with four differential pairs. This device offers 8 low
capacitance ESD clamps allowing HDMI 1.4 data
rates. The integrated ESD clamps and resistors
provide good matching between each differential
signal pair. This provides an advantage over
discrete ESD clamp solutions where variations
between ESD clamps degrade the differential
signal quality.
The TPD12S015A provides a regulated 5V output
(5VOUT) for sourcing the HDMI power line. The
regulated 5V output supplies up to 55mA to the
HDMI receiver. The control of 5VOUT and the hot
plug detect (HPD) circuitry is independent of the
LS_OE control signal and is controlled by the
CT_CP_HPD pin. This independent control
enables the detection scheme (5VOUT + HPD) to
be active before enabling the HDMI link.
Highlighted Features
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Conforms to HDMI Compliance Tests without any External Components
Supports HDMI 1.4 Data Rate
Match Class D and Class C pin mapping
Excellent Matching Capacitance (0.05pF) in Each Differential Signal Pair
Internal Boost Converter to Generate 5V from a 2.3-5.5V Battery Voltage
Auto-direction sensing Level Shifting in the CEC, SDA, and SCL paths
Industrial Temperature Range: -40°C to 85°C
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TPD12S015A EVM
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EVM Description and Configuration
The TPD12S015A EVM has three separate sections, the TOP, MIDDLE, and BOTTOM sections. Each
section includes a TPD12S015A, input/output (IO) ports, and jumper switches for enabling or disabling the
TPD12S015A’s Level Shifter (LS), Hot Plug Detect and 5VOUT.
OUTPUT is side B; INPUT is side A.
TOP, MIDDLE, and BOTTOM sections are all supplied with power using VBAT, VCCA, and GND.
1. The TOP section has Type-A HDMI male connectors for IO.
2. The MIDDLE section has Type-C HDMI male connectors for IO.
3. The BOTTOM section has a Type-A male connector as input for the four differential pair signals only.
For probe testing of the high-speed differential signals, test points are provided on the underside of the
board. Configurable output loads using R1-R8 & C1-C4 are provided. This configuration provides a
means for developing eye diagrams under no load or loaded conditions.
Jumper Switch
Configurations
LS (LS_OE)
enabled
disabled
CT_CP_HPD
enabled
disabled
5V
Selects source of
output's +5V Power
Signal (Pin 18).
Using the +5VOUT of
TPD12S015A
Bypass +5VOUT of
TPD12S015A
In the BOTTOM section, the leftmost pin of TP2 is connected to 5VOUT of TPD12S015A as a test point.
The other two pins are left open.
2
TPD12S015A EVM
Copyright © 2011, Texas Instruments Incorporated
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Schematics
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Schematics
Figure 1. Schematic Drawing
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TPD12S015A EVM
Copyright © 2011, Texas Instruments Incorporated
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