MSP3400C View Datasheet(PDF) - Micronas
Part Name
Description
MFG CO.
'MSP3400C' PDF : 73 Pages View PDF
PRELIMINARY DATA SHEET
5.3. Start Up Sequence
After power on or RESET, the IC is in an inactive state.
The CCU has to transmit the required coefficient set for
a given operation via the I2C bus. Initialization must start
with the demodulator part. If required for any reason, the
audio processing part can be loaded before the demo-
dulator part.
The reset pin should not be > 0.45 DVSUP (see recom-
mended operation conditions) before the 5 Volt digital
power supply (DVSUP) and the analog power supply
(AVSUP) are > 4.75 Volt and the MSP-Clock is running
(Delay: 2 ms max, 0.5 ms typ.).
This means, if the reset low-high edge starts with a delay
of 2 ms after DVSUP> 4.75 Volt and AVSUP>4.75 Volt,
even under worst case conditions, the reset is ok.
MSP 3400C
DVSUP/V
AVSUP/V
4.75
Oscillator
max. 2
RESETQ
0.45 * DVSUP
Fig. 5–3: Power-up sequence
MICRONAS INTERMETALL
min. 2
time / ms
time / ms
time / ms
Note: The reset should
not reach high level be-
fore the oscillator has
started. This requires a
reset delay of >2 ms
19
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