SAA7370 Datasheet, PDF (33/60 Pages) NXP Semiconductors – Digital servo processor and Compact Disc decoder CD7

Philips Semiconductors
Digital servo processor and
Compact Disc decoder (CD7)
Product specification
SAA7370
RAB
(microcontroller)
SCL
(microcontroller)
SDA (SAA7370)
CRC
OK Q1 Q2 Q3
STATUS
Qn–2 Qn–1 Qn
MBG402
Fig.25 Microcontroller protocol for reading Q-channel subcode.
RAB
(microcontroller)
SCL
(microcontroller)
high
SDA (SAA7370)
impedance
CRC OK
10.8/n ms
15.4/n ms
2.3/n
ms
READ start allowed
CRC OK
MBG403
1998 Feb 26
Fig.26 SUBQREADY-I status timing when no subcode is read.
33