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TS5, BCT-1510, BCT-1520,
BCT-1530
•
Pin Function (1/5)
Signal names are prefixed by
Pin
VDD
GND
1
VClamp1-3
VDDA0-1
VSSA0-1
RTCVDD
VDD_VPLL
VSS_VPLL
1.
The VClamp pins are a power supply bus used to diode clamp the voltage on 5V tolerant digital input or output pins to.
The voltage on the digital signal pin is then clamped to within VImax (5.5V) if the applied voltage is increased above 5V.
If the device is to be interfaced to 3.3V logic signals only, then the VClamp pins can be connected to the STi5512 3.3V VDD
power supply. However if any pin is to be interfaced to a 5V logic signal, then the VClamp pins must be connected to the 5V
power supply (the 5V logic device power supply). Note in this case the 5V power supply must be capable of sinking the clamp
current of transient signals above 5V.
In the latter case it is important to ensure the correct power supply ramp sequence. The VClamp power supply must be ap-
plied before or at the same time as the VDD 3.3V power supply. This is to ensure that during power supply power up and
power down, VClamp > VDD + 0.5V.
Pin
1
R_OUT
1
G_OUT
1
B_OUT2
1
C_OUT
1
CV_OUT
1
Y_OUT
1
I_REF_DAC_RGB
1
I_REF_DAC_YCC
1
V_REF_DAC_RGB
1
V_REF_DAC_YCC
OSD_ENABLE
notHSYNC
ODD_OR_EVEN
2
YC0-7
CFC
42
if they are active low; otherwise they are active high.
not
Number
Function
13
Power supply
16
Ground
3
Power supply for clamp diodes
2
Analog power supply for PAL/NTSC/SECAM encoder
2
Analog ground for PAL/NTSC/SECAM encoder
1
Real time clock supply
1
Analog power supply for video PLL
1
Analog ground for video PLL
Table 1 Power supply pins
In/Out
Function
out
Red output
out
Green output
out
Blue output
out
Chroma output
out
Composite video output
out
Luma output
in
DAC current reference
in
DAC current reference
in
DAC voltage reference
in
DAC voltage reference
in/out
OSD enable
in/out
Horizontal sync
in/out
Vertical sync
output
Digital YUV output
input
DENC color burst phase and frequency control.
This pin can be used in non-scart based Genlock applications.
If it is not used, this pin must ground.
Table 2 Video output interface pins
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