SiI 1160 PanelLink Transmitter
Data Sheet
Design Recommendations
Differences Between SiI 160 and SiI 1160
The SiI 1160 Tx is a pin-compatible upgrade to the SiI 160 Tx. It provides improved cable length support without
any changes to the pinout. Interrupt capability is also a new option using the optional MSEN pin. The SiI 1160 Tx
can also act as to repeat HDMI signals when its internal registers are programmed appropriately; this application
requires the use of an I2C interface, optionally available on the SDA and SCL pins.
Table 8. New Pin Functions for SiI 1160 Tx
SiI 160
RSVD – Tied HIGH
SiI 1160
Optional I2C interface pin SCL
Optional interrupt output MSEN
Optional I2C interface pin SDA
ISEL/RST
Pin
20
21
RSVD – Tied LOW
RSVD – Tied HIGH
RSVD – Tied HIGH
23
87
EXT_SWING Selection
The recommended REXT_SWING resistor value for the EXT_SWING pin is provided in the Pin Descriptions section.
This value can be adjusted as needed to optimize the DVI signal swing levels according to the needs of the
application. This adjustment might become necessary, for example, when deviating from the recommended
source termination values (described in the Source Termination Resistors on Differential Outputs section) to
optimize for a specific cabling environment.
PCB Ground Planes
All ground pins on the device should be connected to the same, contiguous ground plane in the PCB. This helps
to avoid ground loops and inductances from one ground plane segment to another. Such low-inductance ground
paths are critical for return currents, which affect EMI performance. The entire ground plane surrounding the
PanelLink transmitter should be one piece, and include the ground vias for the DVI connector.
Voltage Ripple Regulation
The power supply to PVCC is very important to the proper operation of the Transmitter chips. PVCC does not
draw much current so any voltage regulator that can supply 50mA or more is sufficient. A suggested regulator
circuit using a low-dropout regulator is shown in Figure 11. Note that alternative voltage regulator circuits should
be considered only if they meet the LM317 standards of line/load regulation.
Decoupling and bypass capacitors are also involved with power supply connections, as described in detail in
Figure 14 and Figure 15.
LM317EMP
Vin
12V
Vout
3.3V
Vin
Vout
ADJ
240 Ω 1%
390 Ω 1%
Figure 11. Voltage Regulation using LM317EMP
SiI-DS-0126-B
20
SILICONIMAGE [ Silicon image ]
