PLL Modules (January 1996): There are a number of errors in the YAPLL-U
schematic of Fig.4:
1. The correct value for C7 is 220pF, not 22pF
2. The correct value for C16 is 4.7nF, not 47nF
3. The correct value for C8 is 10nF, not 10uF
Also there are a number of incorrect component values in the PCB overlay
diagrams of Figs.2 and 5 -- please refer to the circuit diagrams for the
correct component values. Note that the PCBs are double-sided, with a ground
plane on the top.
We also inadvertently omitted to advise readers regarding the availability
of the YAPLL modules. These are available from Tibor Bece at PO Box 1379,
Sunnybank Hills 4109. Complete kits (excluding VCO modules) are $69 each,
plus $5 for packing and postage. The PC boards are also available
separately, priced at $25 each, and also the PLL ICs for $18 each.
Our apologies for these errors and omissions. The sample driver routines for
use with the YAPLL modules are available on the EA Reader Service BBS,
compressed in the file YAPLL.ZIP.