UDA1324TS データシートの表示（PDF） - Philips Electronics
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UDA1324TS Datasheet PDF : 20 Pages
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Philips Semiconductors
Ultra low-voltage stereo filter DAC
Preliminary specification
UDA1324TS
PINNING
SYMBOL
BCK
WS
DATAI
VDDD
VSSD
SYSCLK
APPSEL
APPL3
APPL2
APPL1
APPL0
Vref(DAC)
VDDA
VOUTL
VSSA
VOUTR
PIN
DESCRIPTION
1 bit clock input
2 word select input
3 data input
4 digital supply voltage
5 digital ground
6 system clock input: 256fs, 384fs
and 512fs
7 application mode select input
8 application input pin 3
9 application input pin 2
10 application input pin 1
11 application input pin 0
12 DAC reference voltage
13 analog supply voltage for DAC
14 left channel output
15 analog ground for DAC
16 right channel output
handbook, halfpage
BCK 1
16 VOUTR
WS 2
DATAI 3
15 VSSA
14 VOUTL
VDDD 4
13 VDDA
UDA1324TS
VSSD 5
12 Vref(DAC)
SYSCLK 6
11 APPL0
APPSEL 7
10 APPL1
APPL3 8
9 APPL2
MBK769
Fig.2 Pin configuration.
FUNCTIONAL DESCRIPTION
System clock
The UDA1324TS operates in the slave mode only.
Therefore, in all applications the system devices must
provide the system clock. The system frequency (fsys) is
selectable and depends on the application mode.
The options are: 256fs, 384fs and 512fs for the L3 mode
and 256fs or 384fs for the static pin mode. The system
clock must be locked in frequency to the digital interface
input signals.
The UDA1324TS supports sampling frequencies (fs) from
16 to 48 kHz.
Application modes
The application mode can be set with the three-level
pin APPSEL (see Table 1):
• L3 mode
• Static pin mode with fsys = 384fs
• Static pin mode with fsys = 256fs.
Table 1 Selecting application mode and system clock
frequency via pin APPSEL
VOLTAGE ON
PIN APPSEL
VSSD
0.5VDDD
VDDD
MODE
fsys
L3 mode
static pin mode
256fs, 384fs or 512fs
384fs
256fs
The function of an application input pin (active HIGH)
depends on the application mode (see Table 2).
Table 2 Functions of application input pins
PIN
APPL0
APPL1
APPL2
APPL3
FUNCTION
L3 MODE STATIC PIN MODE
TEST
L3CLOCK
L3MODE
L3DATA
MUTE
DEEM
SF0
SF1
For example, in the static pin mode the output signal can
be soft muted by setting pin APPL0 to HIGH.
De-emphasis can be switched on for 44.1 kHz by setting
pin APPL1 to HIGH; setting pin APPL1 to LOW will disable
de-emphasis.
2000 Jan 20
4
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