Z90251 Datasheet, PDF (14/97 Pages) Zilog, Inc. – eZVision 200 Television Controllers with OSD

Z90255 ROM and Z90251 OTP
32 KB Television Controller with OSD
6
Table 1 Z90255 Production Device Pin Assignment
Name
Pin Function
Package 42-Pin SDIP Direction POR
V_CC
GND, AGND
+5 Volts
0 Volts
34
30, 13
Power
Power
Power
Power
IRIN
Infrared Remote Capture Input
36
I
I
PWM11
14-bit Pulse Width Modulator Output 1
O
N/A
PWM10-PWM1¹
6-Bit Pulse Width Modulator Output 20, 19, 18, 17, 2, 3, 4, 5, 6, 7 O
N/A
P5 (6-0)
Bit Programmable I/O Ports
1, 2, 3, 4, 5, 6, 7
I/O
I
P2 (7-0)
Bit-Programmable I/O Ports
42, 41, 40, 39, 38, 37, 35, 21 I/O
I
HLFTN
SDATA0, SDATA1
SCLK0, SCLK1
Halftone Output
I²C Data, Bidirectional (Send/Receive)
Serial Data Lines
I²C Clock
21
40, 42²
39, 41²
O
N/A
I/O
N/A
I/O
N/A
P6 (3-0)
Bit-Programmable I/O Ports
16, 12, 10, 9
I/O
I
P4 (7-0)
Bit-Programmable I/O Ports
20, 19, 18, 17, 15, 14, 11, 8 I/O
I
XTAL1
Crystal Oscillator Input
31
I
I
XTAL2
Crystal Oscillator Output
32
O
O
OSDX1
Dot-Clock Oscillator Input
28
I
I
OSDX2
Dot-Clock Oscillator Output
29
O
O
H_SYNC
Horizontal Synchronization
26
V_SYNC
Vertical Synchronization
27
VBLANK
Video Blanking
25
I
I
I
I
O
O
R,G,B
Video Red, Green, Blue
24, 23, 22
O
O
ADC3-ADC0
4-Bit Analog-to-Digital Converter Input 9, 10, 11, 12
AI
I
RESET
System Reset
33
I/O
I
Note: 1 PWM 6 can be either 6-bit or 14-bit PWM outputs.
2 When Pins 39-42 are configured for I²C, pins 39 and 40 comprise one channel, and pins 41 and 42
comprise another channel
PS001301-0800