SAA7708H Datasheet, PDF (44/60 Pages) NXP Semiconductors – Car Radio Digital Signal Processor

Philips Semiconductors
Car Radio Digital Signal Processor
Preliminary specification
SAA7708H
17 RDS TIMING
Table 13 Timing of the RDS interface (see Fig. 14and Fig. 15)
SYMBOL
Frdscl
Tsr
Tpr
Thr
Tir
Tdr
Twb
Tpb
Thb
Tlb
Fexcl
PARAMETER
nominal clock
frequency RDS
clock
Clock set-up
time
Periodic time
Clock high time
Clock low time
Data hold time
Wait time
Periodic time
Clock high time
Clock low time
input frequency
Extern
RDS-Clock
CONDITIONS
MIN
-
100
-
220
220
100
1
2
1
1
-
TYP
1187.5
-
842
-
-
-
-
-
-
-
-
MAX
-
-
-
640
640
-
-
-
-
-
22
UNIT
NO
Hz
8.01
µs
8.02
µs
8.03
µs
8.04
µs
8.05
µs
8.06
µs
8.09
µs
8.10
µs
8.11
µs
8.12
MHz
8.13
18 SUPPLY CURRENTS
Table 14 Current per supply pin or pin group
SYMBOL
Vd3
Vd5
IP3
IP5
IPAD
PARAMETER
CONDITIONS
MIN
Operating supply with respect to Vss all 3.0
voltage 3.3 Volt parts
analog and
digital
Operating supply with respect to Vss all 4.5
voltage 5 Volt parts
periphery
DC supply
high activity of the DSP -
current of the 3.3 at 27 MHz DSP
digital core part frequency
DC supply
current of the
5V digital
periphery part
Without external load to -
ground
Supply current of At zero input and
-
the AD’s
output signal
TYP
3.3
5
57.4
5
11
MAX
3.6
5.5
68
7
15
UNIT
NO
V
7.01
V
7.02
mA
7.03
mA
7.04
mA
7.05
1998 May 19
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