saa7825 NXP Semiconductors, saa7825 Datasheet - Page 74

• Manufacturer Part Number: saa7825
• Description: Cd Audio Decoder, Digital Servo And Filterless Dac With Integrated Pre-amp And Laser Control
• Manufacturer: NXP Semiconductors

Philips Semiconductors
11 OPERATING CHARACTERISTICS (SUBCODE INTERFACE TIMING)
V
Note
1. In the normal operating mode the subcode timing is directly related to the overspeed factor ‘n’. In the lock-to-disc
2003 Aug 13
Subcode interface timing (single speed
I
t
t
t
t
t
O
T
t
T
t
t
t
t
t
t
NPUT
CLKH
CLKL
r
f
d(SFSY-RCK)
W(SBSY)
W(SFSY)
SFSYH
SFSYL
d(SFSY-SUB)
d(RCK-SUB)
h(RCK-SUB)
DDD
cy(block)
cy(frame)
CD audio decoder, digital servo and filterless
DAC with integrated pre-amp and laser control
UTPUTS
mode ‘n’ is replaced by the disc speed factor ‘d’.
SYMBOL
= 1.65 to 1.95 V; V
:
PIN
:
PINS
RCK
SBSY, SFSY
input clock HIGH time
input clock LOW time
input clock rise time
input clock fall time
delay time SFSY to RCK
block cycle time
SBSY pulse width
frame cycle time
SFSY pulse width
SFSY HIGH time
SFSY LOW time
delay time SFSY to SUB
(P data) valid
delay time RCK falling to
SUB
hold time RCK to SUB
SS
PARAMETER
= 0 V; T
AND
SUB (C
amb
= 0 to 70 C; unless otherwise specified.
L
= 20 pF)
n); see Fig.33; note 1
3-wire mode
CONDITIONS
74
2/n
2/n
10/n
12.0/n
122/n
MIN.
4/n
4/n
13.3/n
136/n
TYP.
Objective specification
6/n
6/n
80/n
80/n
20/n
14.7/n
300/n
150/n
366/n
66/n
84/n
1/n
0
0.7/n
MAX.
SAA7825
ns
ns
ms
s
s
s
s
s
s
s
s
s
s
s
UNIT