Hi!

All the design files are copyrighted. You may build it for
yourself only, if you want to sell it in bigger volume, contact
me first for a licence!


The cfgpll.exe can be used to calculate PLL values for different
crystal frequencies. Due to a bug in the STA013, other values must
be used for 32kHz/512x oversampling. There are another program to
calculate 32kHz/512x values, it is not included, contact STM if you
need it. (Both written by Marco Veneri)

The PCB has been created using Protel98. You can download the 30 days
trial version from their homepage.

The PHD file should be processed with XPLA Designer V3.31.
It's pure Abel, however WebPack ISE can't fit it into the
target device. (PZ5128/XCR5128)

There is no schematic, look at the picture for the component
values. Most of the SMD capacitors are 33n..100n for power supply
decoupling, except the STA013 PLL filter circuitry and the low
pass filters. You'll found the recommended values in the STA013
and CS4222 docs. On the solder side there are only power filter
capacitors and 2 pull-up resistors for the JTAG interface.
The 3.3V and 5V supplies must be filtered with at least 220uF
electrolytic capacitor to reduce phase noise.
The xtal (not visible on the picture, only the footprint) is 14.318MHz,
the oscillator is 12..40MHz. (Don't care)

Recommended SRAM types:

AS7C256-20PC    Alliance        USA
IS61C256A-20N   ISSI            Taiwan
MT5C2568-20     Micron          USA
W24257AK-20     Winbond         Taiwan

These are 8k only. I never used them, but they are known to work.

CY7C185-25PC    Cypress         USA
IS61C64AH-20N   ISSI            Taiwan
MCM6264CNP25    Motorola        Korea
MS62C64A-20NC   Mosel           Taiwan
W2465AK-15      Winbond         Taiwan

These will not work! (Some of them is a dummy plastic package only
without silicon)

KD61256A15
PT61C256AH-20H
61C328
M5M5278P-25

Good luck! Let me know about your results.

VF