saa7327 NXP Semiconductors, saa7327 Datasheet - Page 58

• Manufacturer Part Number: saa7327
• Description: Digital Servo Processor And Compact Disc Decoder With Integrated Dac For Video Cd Cd7 Ii
• Manufacturer: NXP Semiconductors

Philips Semiconductors
Notes
1. The 4-wire bus mode microcontroller interface timing for writing to decoder registers 0 to F, and reading Q-channel
2. Negative set-up time means that the data may change after clock transition.
3. If a 16.9344 MHz crystal is used and SELPLL = 0 then the timings are divided-by-2 until the microcontroller has
2000 Jun 26
W
t
t
t
t
t
t
SYMBOL
sD
hD
sCL
hCL
dPLP
dWZ
Digital servo processor and Compact Disc
decoder with integrated DAC for video CD (CD7 II)
RITE MODE
subcode and decoder status, is a function of the overspeed factor ‘n’. In the lock-to-disc mode the maximum data
rate is lower.
written X1XX to register B.
Fig.34 4-wire bus microcontroller timing; read mode (Q-channel subcode and decoder status information).
set-up time SDA to SCL
hold time SCL to SDA
set-up time SCL to
SILD
hold time SILD to SCL
delay between two
SILD pulses
delay time SDA
high-impedance to
SILD
(C
L
PARAMETER
= 20 pF)
SDA (SAA7327)
high-impedance
RAB
SCL
t r
t dRD
t r
CONDITIONS
t f
0
950
480
120
70
0
t PD
t CL
58
MIN.
NORMAL MODE
V DD
0.8 V
t CH
0.8 V
MAX.
V DD
0.8 V
0.8 V
0
950
480
120
70
0
LOCK-TO-DISC MODE
MIN.
t f
V DD
0.8 V
MGS244
t dRZ
0.8 V
Product specification
MAX.
SAA7327
ns
ns
ns
ns
ns
UNIT
s