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PDF PI3HDMI341AR Data sheet ( Hoja de datos )
| Número de pieza | PI3HDMI341AR | |
| Descripción | 3:1 Active HDMI 1.3 Compatible Switch | |
| Fabricantes | Pericom Semiconductor | |
| Logotipo |  |
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Hay una vista previa y un enlace de descarga de PI3HDMI341AR (archivo pdf) en la parte inferior de esta página. Total 12 Páginas | ||
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ADVANCE INFORMATION - COMPANY CONFIDENTIAL
PI3HDMI341AR
3:1 Active HDMI 1.3 Compatible Switch with Optimized
Equalization for Enhanced Signal Integrity
Features
• Supply voltage, VCC = 3.3V ±5%
• Each Port is compatible w/ DVI, HDMI 1.1, HDMI 1.2 or
HDMI 1.3 signals
• Supports both AC-coupled and DC-coupled inputs
• High Performance, up to 1.65 Gbps per channel
• Switching support for 3 side band signals
(SCL, SDA and HPD)
• 5V Tolerance on all side band signals
• SCL, SDA, and HPD pins are the only pins that can support
HOT INSERTION
• Integrated 50-ohm (±10%) termination resistors at each high
speed signal input
• Configurable output swing control
(500mV, 750mV, 1000mV)
• Configurable Pre-Emphasis levels
(0dB, 1.5dB, 3.5dB, & 6.0dB)
• Configurable De-Emphasis
(0dB, -3.5dB, -6.0dB, -9.5dB)
• Optimized Equalization
Single default setting will support all cable lengths
• ESD protection = 8kV (typical) on high-speed data channels
only
• Propagation delay ≤ 2ns
• High Impedance Outputs when disabled
• Packaging (Pb-free & Green): 80-contact LQFP (FF80)
Description
Pericom Semiconductor’s PI3HDMI341AR 3:1 active switch
circuit is targeted for high-resolution video networks that are
based on DVI/HDMI standards and TMDS signal processing.
The PI3HDMI341AR is an active 3 TMDS to 1 TMDS receiver
switch with Hi-Z outputs. The device receives differential signals
from selected video components and drives the video display unit.
It provides three controllable output swings that can be controlled
through a single bit. The allowable output swings are 500mV,
750mV and 1000mV. This solution also provides a unique
advanced pre-emphasis technique to increase rise and fall times
which are reduced during transmission across long distances.
Each complete HDMI/DVI channel also has slower speed, side
band signals, that are required to be switched. Pericom’s solution
provides a complete solution by integrating the side band switch
together with the high speed switch in a single solution. Using
Equalization at the input of each of the high speed channels,
Pericom can successfully eliminate deterministic jitter caused by
long cables from the source to the sink. The elimination of the
deterministic jitter allows the user to use much longer cables (up
to 25 meters).
The maximum DVI/HDMI Bandwidth of 1.65 Gbps provides 8-
bit deep color support, which is offered by HDMI revision 1.3.
Due to its active uni-directional feature, this switch is designed
for usage only for the video receiver’s side. For consumer
video networks, the device sits at the receiver’s side to switch
between multiple video components, such as PC, DVD, STB,
D-VHS, etc. The PI3HDMI341AR is the industry’s first active
DVI/HDMI switch compatible with HDMI 1.1, 1.2, and 1.3
which ensures transmitting high-bandwidth video streams from
video components to the display unit. The PI3HDMI341AR also
provides enhanced robust ESD/EOS protection of 8kV, which is
required by many consumer video networks today.
The Optimized Equalization provides the user a single optimal
setting that can provide HDMI compliance for all cable lengths:
2meter, 10meter, 15meter, and 20 meter. Pericom also offers the
ability to fine tune the equalization settings in situations where
cable length is known. For example, if 25meter length cable
isrequired, Pericom's solution can be adjusted to 16dB EQ to
accept 25meter cable length.
06-0340
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1 page  
ADVANCE INFORMATION - COMPANY CONFIDENTIAL
PI3HDMI341AR
3:1 Active HDMI 1.3 Compatible Switch with Optimized
Equalization for Enhanced Signal Integrity
Truth Table
Control Pins
S1 S2 S3
Hxx
LHx
L LH
LLL
I/O Selected
Y/Z SCL_Sink
SDA_Sink
A1/B1
SCL1
SDA1
A2/B2
SCL2
SDA2
A3/B3
SCL3
SDA3
None (Hi-Z)
None (Hi-Z)
Hot Plug Detect Status
HPD1
HPD2
HPD3
HPD_Sink
L
L
L HPD_Sink
L
L L HPD_Sink
LL
L
OC Setting Value Logic Table
OC_S3
Input Control Pins
OC_S2 OC_S1
0 00
0 00
0 01
0 01
0 10
0 10
0 11
0 11
1 00
1 00
1 01
1 01
1 10
1 10
1 11
1 11
OC_S0
0
1
0
1
0
1
0
1
0
1
0
1
0
1
0
1
Vswing (mV)
500
750
1000
500
500
500
500
500
500
340
270
160
1000
830
500
330
Setting Value
Vos (V)
Pre-emphasis/De-emphasis (dB)
3.06 none
2.95 none
2.84 none
3.02 none
3.06 0
3.05 1.5
2.97 3.5
2.9 6
3.08 0
3.08 -3.5
3.08 -6
3.08 -9.5
2.85 0
2.85 -3.5
2.85 -6
2.85 -9.5
EQ Setting Value Logic Table
EQ_S1
0
EQ_S0
0 3dB on all high speed inputs
Setting Value
0 1 8dB on all high speed inputs
1 0 Optimized Equalization enabled on all high speed inputs (default value if both EQ_S0 and
EQ_S1 are left floating)
1 1 16dB on all high speed inputs
06-0340
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5 Page 
ADVANCE INFORMATION - COMPANY CONFIDENTIAL
PI3HDMI341AR
3:1 Active HDMI 1.3 Compatible Switch with Optimized
Equalization for Enhanced Signal Integrity
Application Information
Supply Voltage
All VCC pins are recommended to have a 0.01uF capacitor tied from VCC to GND to filter supply noise
TMDS inputs
Standard TMDS terminations have already been integrated into Pericom’s PI3HDMI341AR device. Therefore, external termina-
tions are not required. Any unused port must be left floating and not tied to GND.
HPD Pins
The HPD pins on the PI3HDMI341AR require external pull down transistors to maintain a 0V signal when port is not selected, as
follows:
5V
HPD
100K
5V
HPD
HPD1
100K
PI3HDMI341AR
HPD2
5V
HPD
100K
HPD3
SCL and SDA pins
For EDID readability when the Sink is power off, 3 EEPROMs will be needed as follows
SCL1
SDA1
SCL2
SDA2
PI3HDMI341AR
HDMI
RX
SCL3
SDA3
This architecture allows EDID readability when the DTV is power off or power on.
06-0340
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11 Page | ||
| Páginas | Total 12 Páginas | |
| PDF Descargar | [ Datasheet PI3HDMI341AR.PDF ] | |
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