saa7825 NXP Semiconductors, saa7825 Datasheet - Page 78
saa7825
Manufacturer Part Number
saa7825
Description
Cd Audio Decoder, Digital Servo And Filterless Dac With Integrated Pre-amp And Laser Control
Manufacturer
NXP Semiconductors
Datasheet
1.SAA7825.pdf
(88 pages)
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Part Number
Manufacturer
Quantity
Price
Company:
Part Number:
saa7825H
Manufacturer:
PHILIPS
Quantity:
84
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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.
2003 Aug 13
t
W
t
t
t
t
t
t
hCLR
sD
hD
sCL
hCL
dPLP
dWZ
CD audio decoder, digital servo and filterless
DAC with integrated pre-amp and laser control
SYMBOL
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.
Fig.35 4-wire microcontroller timing; read mode (Q-channel subcode and decoder status information).
(C
hold time SILD to
SCL
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 to
SILD high-impedance
L
= 20 pF)
SDA (SAA782X)
high-impedance
RAB
SCL
PARAMETER
t r
t dRD
t r
CONDITIONS
t
f
830
0
950
480
120
70
0
t PD
t
78
CL
MIN.
NORMAL MODE
V
0.8 V
DD
t
CH
– 0.8 V
MAX.
V
0.8 V
DD
– 0.8 V
830
0
950
480
120
70
0
LOCK-TO-DISC MODE
t
f
MIN.
V
0.8 V
DD
t
MBL451
dRZ
– 0.8 V
Objective specification
SAA7825
MAX.
ns
ns
ns
ns
ns
ns
ns
UNIT
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