Z9035112PSC Zilog, Z9035112PSC Datasheet - Page 44

• Manufacturer Part Number: Z9035112PSC
• Description: IC 64KW DIG TV CTRL OTP 52-SDIP
• Manufacturer: Zilog

Specifications of Z9035112PSC

• Applications: TV Controller
• Core Processor: Z8
• Program Memory Type: OTP (128 kB)
• Controller Series: Digital Television Controller (DTC)
• Ram Size: 2K x 8
• Interface: I²C, 2-Wire Serial
• Number Of I /o: 25
• Voltage - Supply: 4.75 V ~ 5.25 V
• Operating Temperature: 0°C ~ 70°C
• Mounting Type: Through Hole
• Package / Case: 52-SDIP (0.600", 15.24mm)
• Lead Free Status / RoHS Status: Contains lead / RoHS non-compliant

Closed-caption text can be decoded directly from the composite video signal using the
processor’s digital signal processing capabilities and displayed on the screen. The
character representation in this mode provides simple attribute control by inserting control
characters. Each word of video RAM specifies two displayed characters.
The 4-bit flash A/D converter, with proper clamping, provides the ability to receive the
composite video signal directly and process the closed-caption text embedded in the
signal. Signal processing can be applied directly to the signal to improve decoder
performance.
CGROM can be placed anywhere in the 64K ROM address space by setting the CGROM
address offset register R7(2). This offset is added to the CGROM address before accessing
the ROM. By modifying the CGROM offset, several fonts can be accessed (limited only
by ROM size). When reset, R7(2) = 0 (no offset), making the Z90351 backward-
compatible with existing OSD control software.