Z8612900100ZCO Datasheet, PDF (11/25 Pages) Zilog, Inc. – One DB25 pin (M-F) cable for printer port connection

Line 21 Decoder Demo Board Kit
for Z86129/130/229/230 User Manua
6
Test Points
Several Test Points available on the board verify the following signals.
• TP1—Video Signal Input
• TP2— +5V
• TP3— -5V
• TP4—U14, Pin 13 (PB output)
• TP5—I²C SDA (data signal)
• TP6—I²C SCK (clock signal)
Jumper Settings
JP# Function
Pins 1-2
Pins 2-3
NC
(No Connect)
JP1 H_SYNC Source Selection
Video In
LM555
JP2 H_SYNC Polarity
Negative
Positive
JP3 V_SYNC Polarity
Positive
Negative
JP4 Connects external applications such as Picture-in-Picture circuit or Digital Set-Top
Box to the Demo Board
JP5 Connects the host PC to the Demo Board using the original ribbon cable.
JP6 I²C Clock Selection
To Printer Port
W/ 4.7K pull- Use for former
up resistor
Z86129 Demo
Board cable
JP7 I²C Data Selection
To Printer Port
W/ 4.7K pull- Use for former
up resistor
Z86129 Demo
Board cable
JP8 I²C Address Selection for Z86229 28h (W)
2Ah (W)
Bold – Denotes default settings
Preliminary
UM015902-0803