SAA7380GP Philips Semiconductors, SAA7380GP Datasheet - Page 54

• Manufacturer Part Number: SAA7380GP
• Description: Error correction and host interface IC for CD-ROM ELM
• Manufacturer: Philips Semiconductors

Philips Semiconductors
11.8
The crystal oscillator is a conventional 2 pin design operating at 15 to 35 MHz. This oscillator is also capable of operating
with a ceramic resonator. It is capable of oscillating with both fundamental and third overtone mode crystals. External
components should be used to suppress the fundamental output of the third overtone types as illustrated in Fig.25.
1996 Apr 25
handbook, full pagewidth
Error correction and host interface IC for
CD-ROM (ELM)
Crystal oscillator
(HD0 to HD7)
read data
DMARQ
DMACK
HFBLB
HFBC
HRD
valid
handbook, halfpage
t 4
Fig.24 Pseudo 16-bit DMA read transfer.
CROUT
470
SAA7380
Fig.25 Crystal oscillator circuit.
t 9
first byte
t 8
10 pF
OSCILLATOR
25 MHz
100 k
t 10
t 5
54
CRIN
10 pF
t 1
3rd overtone only
3.3 H
MGE213
1 nF
t 6
t 0
t 3
last byte
t 2
t 7
MGE212
Preliminary specification
SAA7380