SAA7380 Datasheet, PDF (54/60 Pages) NXP Semiconductors – Error correction and host interface IC for CD-ROM ELM

Philips Semiconductors
Error correction and host interface IC for
CD-ROM (ELM)
Preliminary specification
SAA7380
handbook, full pagewidth
DMARQ
DMACK
HRD
read data
valid
(HD0 to HD7)
HFBC
HFBLB
t0
t1
t2
t4
t5
first byte
t8
t3
t6
t7
last byte
t9
t10
Fig.24 Pseudo 16-bit DMA read transfer.
MGE212
11.8 Crystal oscillator
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, halfpa_Sge_AA7380
OSCILLATOR
CROUT
CRIN
470 Ω
25 MHz
100 kΩ
10 pF
3rd overtone only
3.3 µH
10 pF
1 nF
MGE213
Fig.25 Crystal oscillator circuit.
54