Home |
Search |
Today's Posts |
|
Electronics Repair (sci.electronics.repair) Discussion of repairing electronic equipment. Topics include requests for assistance, where to obtain servicing information and parts, techniques for diagnosis and repair, and annecdotes about success, failures and problems. |
|
LinkBack | Thread Tools | Display Modes |
#1
Posted to sci.electronics.repair,sci.electronics.components,comp.arch.embedded
|
|||
|
|||
uPDxxxxx chips datasheets (camcorder, vcr, etc)
Does anyone have a repository of datasheets or at least valid signal
descriptions for uPD series chips used in Matsu****a (Panasonic) camcorders, vcrs, etc.? Currently I am seeking data on the uPD9313G or uPD9313GB video sync generator; the pin descriptions for this part, on a schematic in a camcorder service manual, are incorrect, as evidenced by a block diagram which labels the pins entirely differently (and also by common sense). The chip is totally unlike the LM1882 or 74ACT715 parts for which data is available. This particular manual contains no descriptions of operation of the device and many pins connect to downstream proprietary devices so deducing their function in context is unlikely. If one is to believe the pin labeling in the block diagram however, a small number of pins have standard outputs like Vertical and Horizontal Drive, Blanking, Composite Sync, Clamp Pulse, but other abbreviations are cryptic and to me unfamiliar. Scoping other output pins could yield clues, but the inputs and programming pins are the mystery. Unless this chip was produced for just one model of camcorder, it will have some standard functions and inputs; I hope to learn how to genlock it. Michael |
Thread Tools | Search this Thread |
Display Modes | |
|
|
Similar Threads | ||||
Thread | Forum | |||
Datasheets for SN755870 and RJH3077 please.... | Electronics Repair | |||
Datasheets for Philips or JVC CD pickups | Electronics Repair | |||
Old IC datasheets for SN96525N ? | Electronics | |||
Datasheets ... | Electronics Repair | |||
NCS83xx circuits datasheets | Electronics |