General Description

The ICS2008B, SMPTE Time Code Receiver/Generator chip, is a VLSI device designed in a low power CMOS process. This device provides the timing coordination for Multimedia sight and sound events. Although it is aimed at a PC Multimedia environment, the ICS2008B is easily integrated into products requiring SMPTE time code generation and/or reception in LTC (Longitudinal Time Code) and/or VITC (Vertical Interval Time Code) formats and MTC (MIDI Time Code) translation.

Features

? Meets SMPTE VITC Specifications

? Meets SMPTE and EBU LTC Specifications

? Time Code Burn-in Window

– Programmable position, size and character attributes

? LTC edge rate control

– Conforms to EBU Tr and Tf Specifications

? Internal and external sync sources

– Genlock to video or house sync inputs

– Improved video timing lock during VCR pause and shuttle modes

– Internally generated timing from oscillator input

– External click input

– Internal Timer

Allows 1/4 Frame MIDI Time Code Messages

? LTC and VITC Generators

– Real Time SMPTE Rates: 30 Hz, 29.97 Hz, 25 Hz, 24 Hz

– Time Code Modes Drop Frame and Color Frame

– VITC can be inserted on two lines from 10-40 (SMPTE specifies lines 10-20)

– Jam Sync, freewheeling, error bypass/correction, and plus-one-frame capability

? LTC Receiver

– Synchronize bit rates from 1/30th nominal to 80X nominal playback speed.

? VITC Receiver

– Reads code from any or all selected scan lines.

– VITC search mode, will search through VBI lines until VITC is found.

? New UART frequency of 38.4 K for tape transport control