21 May
2009
21 May
'09
11:15 p.m.
On 21 May 2009 at 21:42, William Donzelli wrote:
Nope--DSP for FAX modem. Mentioned in July 1990, EDN:
"Compatible with the company's widely used YM7109 chip, the YM7109E
fax modem IC features enhancements such as error-correction and power-
down modes, as well as synchronization to an external clock. The CMOS
IC, which is targeted for use in personal-computer fax boards and
portable-fax applications, offers 9600-bps binary file transfers and
supports voice recording and playback."
I figure that if someone says the chip is "widely used", someone must
at least have a pinout...
--Chuck
For those of
you with big datasheet collections, does anyone have
data for a Yamaha YM7109C? ?A pinout would be sufficient. ?40 pin
DIP- -it seems to be some sort of DSP. ?Circa 1990.
DSP, for sound generation? Most Yamaha chips are undocumented.