Tom P aka "Mad Dog" asks:
>Does anyone know which chip on the 3400 controlls the ADB ?

Opening the PB3400 devnote . . . the "Architecture" block chart on page 
11 shows the PMU IC with ADB responsibilities. Then on pages 15 and 16 we 
find this helpful info:

<quote>
Power Management Unit
The power management unit (PMU) is a 68HC05 microprocessor that operates 
with its own RAM and ROM. The PMU IC performs the following functions:
controls sleep and power on and off sequences
controls power to the other ICs
controls clock signals to the other ICs
supports the ADB
scans the keyboard
controls display brightness
monitors battery charge level
controls battery charging"
</quote>

does any of that help?

What the heck are you up to now? <G>

Dan K

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hotline://dankephoto.dhs.org:9500
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