SAA7824 Datasheet, PDF (74/89 Pages) NXP Semiconductors – CD audio decoder, digital servo and filterless DAC with integrated pre-amp and laser control (PhonIC)

Philips Semiconductors
CD audio decoder, digital servo and filterless
DAC with integrated pre-amp and laser control
Product specification
SAA7824
11 OPERATING CHARACTERISTICS (SUBCODE INTERFACE TIMING)
V_DDD = 1.65 to 1.95 V; V_SS = 0 V; T_amb = 0 to 70 °C; unless otherwise specified.
SYMBOL
PARAMETER
CONDITIONS
MIN.
TYP. MAX. UNIT
Subcode interface timing (single speed × n); see Fig.34; note 1
INPUT: PIN RCK
t_CLKH
t_CLKL
t_r
t_f
t_d(SFSY-RCK)
input clock HIGH time
input clock LOW time
input clock rise time
input clock fall time
delay time SFSY to RCK
OUTPUTS: PINS SBSY, SFSY AND SUB (C_L = 20 pF)
T_cy(block)
block cycle time
t_W(SBSY)
SBSY pulse width
T_cy(frame)
frame cycle time
t_W(SFSY)
SFSY pulse width
3-wire mode
t_SFSYH
SFSY HIGH time
t_SFSYL
SFSY LOW time
t_d(SFSY-SUB)
delay time SFSY to SUB
(P data) valid
t_d(RCK-SUB)
delay time RCK falling to
SUB
t_h(RCK-SUB)
hold time RCK to SUB
2/n
4/n
2/n
4/n
−
−
−
−
10/n
−
6/n
µs
6/n
µs
80/n
ns
80/n
ns
20/n
µs
12.0/n 13.3/n 14.7/n ms
−
−
300/n µs
122/n 136/n 150/n µs
−
−
366/n µs
−
−
66/n
µs
−
−
84/n
µs
−
−
1/n
µs
−
−
0
µs
−
−
0.7/n
µs
Note
1. In the normal operating mode the subcode timing is directly related to the overspeed factor ‘n’. In the lock-to-disc
mode ‘n’ is replaced by the disc speed factor ‘d’,
2003 Oct 01
74