SAA7282 Datasheet, PDF (4/25 Pages) NXP Semiconductors – Terrestrial Digital Sound Decoder TDSD2

Philips Semiconductors
Terrestrial Digital Sound Decoder (TDSD2)
Product specification
SAA7282
PINNING
SYMBOL SOT205AG
DOBM
1
V_SS
2
n.c.
3
XIN
4
XOUT
5
DATA
6
PCLK
7
RESET
8
SCL
9
SDA
10
PORT2
11
n.c.
12
ADSEL
13
MUTE
14
n.c.
V_DDAR
V_SSAR
VRO
VRC
n.c.
OPR
EXTR
FMR
INTR
CDR
n.c.
V_REF
V_DAC
CDL
INTL
FML
EXTL
OPL
n.c.
V_SSAL
V_DDAL
15 to 17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
SOT232A
28
29
−
30
31
32
1
2
3
4
5
−
6
7
−
8
9
10
11
−
12
13
14
15
16
−
17
18
19
20
21
22
23
−
24
25
DESCRIPTION
digital audio interface output
ground connection for the digital section
not connected
crystal input at 256fs (8.192 MHz)
crystal output at 256fs (8.192 MHz)
serial data input at 728 kbits/s from DQPSK demodulator
output clock at 728 kHz to DQPSK demodulator
active LOW reset; used to set the device in a valid initial condition
clock input for I²C control bus
data port for I²C control bus, input/open drain output
output mirroring the I²C control register bit PORT2
not connected
I²C-bus slave address selection input; allows selection of one of two separate
slave addresses, defaults to logic 1
active LOW mute input; when set LOW, sets the digital data to zero and either
silences the output or switches it to analog FM, depending on the status of
MUTEDEF (control bit in the I²C register) and RSSF; overridden by automute
(if automute is used, then MUTE is automatically pulled LOW)
not connected
analog supply voltage for the right audio channel
analog ground connection for the right audio channel
internal reference voltage buffer output
internal reference voltage buffer HIGH impedance node
not connected
analog output from the right audio channel
external analog input to the right audio channel
FM sound input to the right audio channel
integrator output from the right audio channel
integrator connection to an external damping capacitor
not connected
reference voltage input; 2.5 V (typical)
quiet V_SS to DACs
integrator connection to an external damping capacitor
integrator output from the left audio channel
FM sound input to the left audio channel
external analog input to the left audio channel
analog output from the left audio channel
not connected
analog ground connection for the left audio channel
analog supply voltage for the left audio channel
July 1993
4