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參數(shù)資料
| 型號： | SAA3500H |
| 廠商： | NXP SEMICONDUCTORS |
| 元件分類： | 消費家電 |
| 英文描述： | Digital audio broadcast channel decoder |
| 中文描述： | SPECIALTY CONSUMER CIRCUIT, PQFP100 |
| 封裝： | 14 X 20 MM, 2.70 MM HEIGHT, PLASTIC, MO-112, SOT-317-1, QFP-100 |
| 文件頁數(shù)： | 25/32頁 |
| 文件大?。?/td> | 156K |
| 代理商： | SAA3500H |
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2000 Jun 14
25
Philips Semiconductors
Preliminary specification
Digital audio broadcast channel decoder
SAA3500H
handbook, full pagewidth
MGB509
tL
L3CLK
L3MODE
d5
t
h2
t
td1
d2
t
L3DATA
IC to
microcontroller
Fig.28 Timing of L3-bus halt mode.
14 APPLICATION INFORMATION
A suggestion for an application block diagram is shown in Fig.29.
TUNER
BAND III/L
SAW
FILTER
AGC
SAA3500H
SAA2502H
RAM
(256k
×
8)
MICROCONTROLLER
RDI
I2S
L/R
SPDIF
D
A
I2C or L3-BUS
DAB3
24.576 MHz
Fig.29 Typical application diagram.
14.1
Clock oscillator
To perform automatic fine tuning of the clock signal, the
microcontroller reads data from the SAA3500H and
controls an external (VCXO) crystal oscillator. The
following requirements should be met by that oscillator:
Table 10
VCXO specification
14.2
Reset input
The reset signal is active LOW and should have a
minimum duration of 60 clock cycles.
14.3
Boundary scan test interface
For normal operation set TRST LOW, TCK LOW or HIGH,
TDI and TMS not connected or HIGH. The boundary scan
chain has a length of 84 and a 5-bit instruction code.
PARAMETER
VALUE
UNIT
Frequency
Pull range
Operating temperature
Frequency drift with temperature
Tolerance and ageing
24576
±
50
40 to +85
≤±
20
≤±
10
kHz
ppm
°
C
ppm
ppm
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