Texas Instruments TPD12S016PWR Evaluation Module TPD12S016PWREVM TPD12S016PWREVM Scheda Tecnica
Codici prodotto
TPD12S016PWREVM
User
'
s Guide
SLLU154
–
September 2011
TPD12S016 Evaluation Module
1
Features
2
Applications
•
Confirms to HDMI Compliance Tests without any
•
Cell Phones
External Components
•
eBook
•
Supports HDMI1.4 Data Rate
•
Portable Media Players
•
Match Class D and Class C pin mapping
•
Set-top Box
•
Eight channel ESD lines for four differential pairs
with ultra-low differential capacitance matching
(0.05pF)
with ultra-low differential capacitance matching
(0.05pF)
•
On-chip load switch with 55mA current limit feature
at the HDMI 5V_OUT pin.
at the HDMI 5V_OUT pin.
•
Auto-direction sensing I2C level shifter with
one-shot circuit to drive long HDMI cable (750pF
Load)
one-shot circuit to drive long HDMI cable (750pF
Load)
•
Back-drive protection on HDMI connector side
ports
ports
•
Integrated pull-up and pull-down resistors per
HDMI specification
HDMI specification
•
IEC61000-4-2 (Level 4) ESD Performance at all
external pins
external pins
•
Space Saving 24-pin RKT Package (2mm
х
4mm)
and 24-TSSOP Package
3
EVM Description
The TPD12S016 is a single-chip HDMI interface device with auto-direction sensing I2C voltage level shift
buffers, load switch, and integrated high-speed ESD protection clamps. The device pin mapping matches
the HDMI Type D connector with four differential pairs. This device offers eight low-capacitance ESD
clamps, allowing HDMI 1.4 data rates. The integrated ESD circuits provide good matching between each
differential signal pair, which allows an advantage over discrete ESD solutions where variations between
ESD protection clamps degrade the differential signal quality. The TPD12S016 provides a current limited 5
V output (5V_OUT) for sourcing the HDMI power line. The current limited 5 V output supplies up to 55 mA
to the HDMI receiver. The control of 5V_OUT and the hot plug detect (HPD) circuitry is independent of the
LS_OE control signal and is controlled by the CT_HPD pin. This independent control enables the
detection scheme (5V_OUT + HPD) to be active before enabling the HDMI link. An internal 3.3V node
powers the CEC pin eliminating the need for an onboard 3.3V supply.
buffers, load switch, and integrated high-speed ESD protection clamps. The device pin mapping matches
the HDMI Type D connector with four differential pairs. This device offers eight low-capacitance ESD
clamps, allowing HDMI 1.4 data rates. The integrated ESD circuits provide good matching between each
differential signal pair, which allows an advantage over discrete ESD solutions where variations between
ESD protection clamps degrade the differential signal quality. The TPD12S016 provides a current limited 5
V output (5V_OUT) for sourcing the HDMI power line. The current limited 5 V output supplies up to 55 mA
to the HDMI receiver. The control of 5V_OUT and the hot plug detect (HPD) circuitry is independent of the
LS_OE control signal and is controlled by the CT_HPD pin. This independent control enables the
detection scheme (5V_OUT + HPD) to be active before enabling the HDMI link. An internal 3.3V node
powers the CEC pin eliminating the need for an onboard 3.3V supply.
The TPD12S016 integrates all the external termination resistors at the HPD, CEC, SCL, and SDA lines.
There are three non-inverting bi-directional translation circuits for the SDA, SCL, and CEC lines. Each
have a common power rail (VCCA) on the A side from 1.1 V to 3.6V. On the B side, the SCL_B and
SDA_B each have an internal 1.75 k
There are three non-inverting bi-directional translation circuits for the SDA, SCL, and CEC lines. Each
have a common power rail (VCCA) on the A side from 1.1 V to 3.6V. On the B side, the SCL_B and
SDA_B each have an internal 1.75 k
Ω
pullup connected to the regulated 5 V rail (5V_OUT). The SCL and
SDA pins meet the I2C specification and drive up to 750 pF capacitive loads exceeding the HDMI1.4
specifications. The CEC_B pin has an internal 27 k
specifications. The CEC_B pin has an internal 27 k
Ω
pullup to the internal 3.3 V supply rail. The HPD_B
port has a glitch filter to avoid false detection due to plug bouncing during the HDMI connector insertion.
1
SLLU154
–
September 2011
TPD12S016 Evaluation Module
Copyright
©
2011, Texas Instruments Incorporated