Vizio VM60P HDTV10A Service Manual page 50

Digital input port
The Digital Input Port is a 48-bit data input with flexible configuration to support a wide range
of digital sources. It consists of two 24-bit ports (PORTA and PORTB), two sets of control
signals (VS, HS, ODD, etc.), and 4 input clocks. Up to 4 different inputs are supported as long
as at least 2 of these inputs are 8-bit CCIR656. The digital input port can also be configured to
support one 30-bit input with a second 16-bit input port.
PORTA also includes optional signals (DIP_EXT_CLAMP, DIP_EXT_COAST,
DIP_CLEAN_HS_OUT) for interfacing to external ADC/PLL devices. These signals are not
present on PORTB. Bits 7 to 0 of PORTA can be configured as a bidirectional interface for
media card applications.
Inputs to the digital input port are TTL compatible with a maximum clock speed of 165MHz.
Sync and clock polarity are programmable.
Due to pin sharing, PORTB is not available when using 48-bit double-wide TTL output to the
panel.
The following digital video formats are supported by the FLI8668 digital video graphic port:
• ITU-BT-656
• 8-bit 4:2:2 YCbCr or YPbPr
• 16-bit 4:2:2 YCbCr or YPbPr
• 20-bit 4:2:2 YCbCr or YPbPr
• 24-bit 4:4:4 YCbCr or YPbPr
• 30-bit 4:4:4 YCbCr or YPbPr
• 24-bit RGB
• 30-bit RGB
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