Z9025106PSG Zilog, Z9025106PSG Datasheet - Page 50

• Manufacturer Part Number: Z9025106PSG
• Description: IC 32K 8BIT DTC OTP 42-DIP
• Manufacturer: Zilog

Specifications of Z9025106PSG

• Applications: TV Controller
• Core Processor: Z8
• Program Memory Type: OTP (32 kB)
• Controller Series: Digital Television Controller (DTC)
• Ram Size: 300 x 8
• Interface: I²C, 2-Wire Serial
• Number Of I /o: 27
• Voltage - Supply: 4.5 V ~ 5.5 V
• Operating Temperature: 0°C ~ 70°C
• Mounting Type: Through Hole
• Package / Case: 42-DIP (0.600", 15.24mm)
• Processor Series: Z902x
• Core: Z8
• Data Bus Width: 8 bit
• Program Memory Size: 32 KB
• Data Ram Size: 300 B
• Interface Type: I2C
• Maximum Clock Frequency: 6 MHz
• Number Of Programmable I/os: 27
• Mounting Style: Through Hole
• On-chip Adc: 4 bit, 4 Channel
• Lead Free Status / RoHS Status: Lead free / RoHS Compliant

Bit 5, Fringe Enable, sets the fringe effect ON or OFF.
Bit 4, Smoothing Effect Enable, sets smoothing ON or OFF, and is available for
2X and double width characters.
Bit 3, RGB Polarity, sets color polarity of OSD color output signals to positive or
negative.
Bits 2, 1, and 0 form the color for the master background. The eight possible
colors are the same ones listed in Table 21.
Video Refresh RAM Access
The Z90255 supports 12-bit character data. Nine bits, P8 and P7 through P0,
contain character code. Three additional bits,
information. See Figures 15.
Color Palette Selection bits serve as a 3-bit Color Index to the color palette look-
up table. When software writes Character Byte data (7-0) into VRAM, it also
takes the data in the color index register and writes the corresponding Color
Palette Selection Bits (10-8) and the most significant bit of character data (P8).
When updating 3-bit color index data, the most significant bit of the character data
must also be updated. Table 20 contains VRAM structure and memory mapping.
Figure 15 VRAM Data Path for 512 Character Set
512 Character
Set
VRAM D[11:0]
(4+8=12-bit word)
D7
D6
Color Index Register
D5
11
P8
D4
D3
10
C2 C1 C0
32 KB Television Controller with OSD
Character
D2
color
9
D1
D0
C2
Character Information
8
through C0, contain color palette
CLR_IDX: 09h Bank C
P[8:0] = character code
C[2:0] = character color
P7
7
P6
6
Character code
P5 P4 P3
5
4
3
P2 P1
2
PS001301-0800
1
P0
0
42