SAA7370 Datasheet, PDF (51/60 Pages) NXP Semiconductors – Digital servo processor and Compact Disc decoder CD7

Philips Semiconductors
Digital servo processor and
Compact Disc decoder (CD7)
Product specification
SAA7370
SYMBOL
PARAMETER
CONDITIONS
NORMAL MODE
MIN.
MAX.
LOCK-TO-DISC MODE
UNIT
MIN.
MAX.
WRITE MODE (C_L = 20 pF)
t_sD
set-up time SDA to SCL
t_hD
hold time SCL to SDA
t_sCL
t_hCL
t_dPLP
set-up time SCL to SILD
hold time SILD to SCL
delay between two SILD
pulses
t_dWZ
delay time SDA
high-impedance to SILD
0
−
0
−
ns
950
−
950
−
ns
480
−
480
−
ns
120
−
120
−
ns
70
−
70
−
µs
0
−
0
−
ns
Notes
1. The 4-wire bus mode microprocessor interface timing for writing to registers 0 to F, and reading Q-channel subcode
and decoder status, is a function of the overspeed factor ‘n’. In the lock-to-disc mode the maximum data rate is lower.
2. Negative set-up time means that the data may change after clock transition.
handbook, full pagewidth
SBSY
SFSY
(4-wire mode)
SFSY
(3-wire mode)
tW(SBSY)
Tcy(block)
tSFSYH
tW(SFSY)
tcy(frame)
tSFSYL
1998 Feb 26
SFSY
0.8 V
td(SFSY_−RCK)
tr
RCK
tf
VDD – 0.8 V
td(SFSY_−SUB) th(RCK_−SUB)
td(RCK_−SUB)
SUB
Fig.31 Subcode interface timing diagram.
0.8 V
VDD – 0.8 V
0.8 V
MBG414
51