µPD72852A
Figure 3-3. Isolation Barrier Circuits
(a) CTL0, CTL1, D0-Dn Isolation Barrier Circuit
Link
LinkVDD
Required when LinkVDD is 5 V
DVDD
µPD72852A
5 kΩ
100 Ω
5.6 kΩ
0.001 µF
5 kΩ
0.001 µF
4.7 kΩ
300 Ω
LinkGND LinkGND
GND
(b) Link-on Isolation Barrier Circuit
Link
LinkVDD
100 Ω
5 kΩ
µPD72852A
0.01 µF
1.6 kΩ
LinkGND
(c) LPS Isolation Barrier Circuit
Link
DVDD
5 kΩ
0.033 µF
1.6 kΩ
100 Ω
µPD72852A
GND
(d) LREQ Isolation Barrier Circuit
Link
LinkVDD
Required when LinkVDD is 5 V
DVDD
µPD72852A
5 kΩ
100 Ω
5.6 kΩ
0.001 µF
5 kΩ
0.001 µF
4.7 kΩ
300 Ω
LinkGND LinkGND
GND
(e) SCLK Isolation Barrier Circuit
Link
LinkVDD
5 kΩ
DVDD
5 kΩ
µPD72852A
0.001 µF
5 kΩ
LinkGND
5 kΩ
GND
The Operating range of the power supply voltage is between 3.0 V and 3.45 V.
Please refer to IEEE1394a-2000 [5A.8.4].
18
Data Sheet S16725EJ2V0DS