ICS82C404 Datasheet, PDF (2/13 Pages) Integrated Circuit Systems – Dual Programmable Graphics Frequency Generator

ICS82C404
Pin Configuration
SEL0/CLK 1
SEL1/DATA 2
VDD 3
OE 4
GND 5
X1 6
X2 7
MCLK 8
16 PD
15 EXTSEL
14 INIT1
13 VDD
12 INIT0
11 EXTCLK
10 FPMODE
9 VCLK
16-Pin PDIP or SOIC
Pin Descriptions
PIN NUMBER
PIN NAME
1
SEL0-CLK
2
SEL1-DATA
3
AVDD
4
OE
5
GND
6
X1
7
X2
8
MCLK
9
VCLK
10
FPMODE
11
EXTCLK
12
INIT0
13
VDD
14
INIT1
15
EXTSEL
16
PD
DESCRIPTION
Clock input in serial programming mode.
Clock select pin in operating mode.
Data input in serial programming mode.
Clock select pin in operating mode.
Power.
Tristates outputs when low.
Ground.
Crystal input.
Crystal output.
Memory clock output.
Video clock output.
Clock select input used to force REG2 programmed frequency.
External clock input.
Selects initial power-up conditions, LSB.
Power.
Selects initial power-up conditions, MSB.
Selects external clock input (EXTCLK) as VCLK output.
Power-down pin, active low.
2