Akai LCT2662, Service Manual

Page: 73 / 111

Pin Descriptions Pinout Information
2.2.1 Video Port Pins
Table 2-1 provides detailed pin descriptions for the Video Port.
Table 2-1 Video Port Pin Descriptions
Name Pin(s) Type Function
PVHS 28 I
Primary Video (PV) Port horizontal sync input. Indicates start of next line of input data.
This signal is internally polarity corrected (PVHS_POL) so PVHS can be either active-
high or active-low. [Input, pull-down, 5V-tolerant]
PVVS 27 I
Primary Video (PV) Port vertical sync input. Indicates start of next field or frame of
input data. This signal is internally polarity corrected (PVVS_POL) so PVVS can be
either active-high or active-low. [Input, pull-down, 5V-tolerant]
CREF 26 I
Video input clock reference. [Input, pull-down, 5V-tolerant]
• cref_mode = 1
• cref_mode = 0
PVCLK 25 I Primary Video (PV) Port pixel clock input. [Input, pull-down, 5V-tolerant]
SVVS 12 I
Secondary Video (SV) Port (ITU-R BT656 format) vertical sync input. Indicates start of
next field or frame of input data. This signal is internally polarity corrected (svvs_pol)
so SVVS can be either active-high or active-low. [Input, pull-down, 5V-tolerant]
SVHS 11 I
Secondary Video (SV) Port (ITU-R BT656 format) horizontal sync input. This signal is
internally polarity corrected (
svhs_pol ) so SVHS can be either active-high or active-
low. [Input, pull-down, 5V-tolerant]
SVCLK 13 I
Secondary Video (SV) Port (ITU-R BT656 format) pixel clock input. [Input, pull-down,
5V-tolerant]
PVCLK
sampling points
0 1 N-1 N
CREF
VR, VG, VB
PVCLK
sampling points
0 1 N-1 N
CRE F
VR, VG, VB