Speaker; Pci - Epson SCE8720C Series Hardware Manual

4.8 Speaker

PCBEEP signal is used to drive the piezoelectric loudspeaker by logical pulse signal.
Circuit example is shown below.
SCE8720C
PCBEEP

4.9 PCI

PCI bus of SCE8720C complies with the PCI2.1, but the power voltage is limited to 3.3V.
Up to 3 PCI devices can be connected. (also limited by the number of PCICLKs.) Among
these, up to 2 PCI devices can be connected as master. (limited by the numbers of REQ
and GNT.)
If you wish to connect a 5V PCI device, or PCI devices of more than 3, refer to the
reference circuit in Appendix A.
Rev.A
10k
10k
Figure 4.6 Piezoelectric buzzer connection
EPSON
CARD-PCI/GX Hardware Manual
5V
Piezoelectric
buzzer
4.7k
0.01µF
45