描述 Description

The CXP88616/88624 is a CMOS 8-bit microcomputer which consists of A/D converter, serial interface, timer/counter, time base timer, high precision timing pattern generation circuits, PWM output, VISS/ VASS circuit, remote control receiving circuit, VSYNC separator and the measurement circuit which measure signals of capstan FG amplifier and drum FG/PG amplifier and other servo systems, as well as basic configurations like 8-bit CPU, ROM, RAM and I/O port. They are integrated into a single chip.

Also, CXP88616/88624 provides sleep/stop function which enables to lower power consumption.

特性 Features

? A wide instruction set (213 instructions) which cover various types of data

— 16-bit arithmetic/multiplication and division/boolean bit operation instructions

? Minimum instruction cycle 250ns at 16MHz operation

? Incorporated ROM capacity 16K bytes (CXP88616) 24K bytes (CXP88624)

? Incorporated RAM capacity 672 bytes (including PPG RAM)

? Peripheral function

— A/D converter 8 bits, 14 channels, successive approximation system (Conversion time of 20μs/16MHz)

— Serial interface Incorporated 8-bit, 8-stage FIFO for data (Auto transfer for 1 to 8 bytes), 1 channel

— Timer 8-bit timer/counter, 2 channels 19-bit time base timer

— High precision timing pattern generation PPG 19 pins 32-stage programmable circuit RTG 5 pins, 1 channel 5-bit, 8-satge FIFO (RECCTL control), 1channel

— PWM/DA gate output 12 bits, 2 channels (Repetitive frequency 62.5kHz/16MHz) DA gate pulse output, 13 bits, 2 channels

— Analog signal input circuit Capstan FG amplifier circuit

Drum FG amplifier circuit

Drum PG amplifier circuit

PBCTL amplifier circuit

— CTL write/rewrite circuit Recording current control circuit

— Servo input control Capstan FG, Drum FG/PG, CTL input

— VSYNC separator

— FRC capture unit Incorporated 26-bit and 8-stage FIFO

— VISS/VASS circuit Pulse duty auto detection circuit

— 32kHz timer/event counter 32kHz oscillation circuit, ultra-low speed instruction mode

— Remote control reception circuit 8-bit pulse measurement counter, 6-stage FIFO

— Tri-state output PPG 1 pin, output 8 pins

— Pseudo HSYNC output function

— High speed head switching circuit

? Interruption 20 factors, 15 vectors, multi-interruption possible

? Standby mode SLEEP/STOP

? Package 100-pin plastic QFP

? Piggyback/evaluation chip CXP88800 100-pin ceramic QFP