15.1Introduction to soldering surface mount
packages
15.2Reflow soldering
15.3Wave soldering
15.4Manual soldering
15.5Suitability of surface mount IC packages for
wave and reflow soldering methods
16DEFINITIONS
17LIFE SUPPORT APPLICATIONS
2000 Mar 282
Philips SemiconductorsPreliminary specification
96 kHz IEC 958 audio DACUDA1351TS
1FEATURES
1.1General
• 2.7 to 3.6 V power supply
• Integrated digital filter and Digital-to-Analog Converter
(DAC)
• Master-mode dataoutput and input interface for off-chip
sound processing
• 256fssystem clock output
• 20-bit data path in interpolator
• High performance
• No analog post filtering required for DAC
• Support sampling frequencies from 28 kHz up
to 100 kHz
• The UDA1351TS is fully pin and function compatible
with the UDA1350ATS.
1.2Control
Controlled either by means of static pins or via the
L3 microcontroller interface.
1.3IEC 958 input
• On-chip amplifier for convertingIEC 958 inputto CMOS
levels
• Lock indication signal available on pin LOCK
• Lock indication signal combined on-chip with the Pulse
Code Modulation (PCM) status bit; when non-PCM is
detected, pin LOCK indicates out-of-lock
• Key channel-status bits available via L3 interface (lock,
pre-emphasis, audio sample frequency, two channel
PCM indication and clock accuracy).
2APPLICATIONS
Digital audio systems.
3GENERAL DESCRIPTION
Available in two versions:
• UDA1351TS:
– only IEC 958 input to DAC in SSOP28 package.
• UDA1351H:
– full featured version in QFP44 package.
The UDA1351TS is a single chip IEC 958 audio decoder
with an integrated stereo DAC employing bitstream
conversion techniques.
A lock indication signal is available on pin LOCK,
indicating that the IEC 958 decoder is locked. This pin is
also used to indicate whether PCM data is applied to the
input or not. When non-PCM data is detected, the device
indicates out-of-lock.
By default, the DAC output and the data output interface
are muted when the decoder is out-of-lock. However, this
setting can be overruled in the L3 control mode.
1.4Digital sound processing and DAC
• Automatic de-emphasis when using IEC 958 input with
32.0, 44.1 and 48.0 kHz audio sample frequencies
• Soft mute by meansof acosine roll-offcircuit selectable
via pin MUTE or the L3 interface
• dB linear volume control with 1 dB steps from 0 dB to
−60 dB and −∞ dB
• Bass boost and treble control in L3 control mode
• Interpolating filter (fsto 128fs) by means ofa cascade of
a recursive filter and a FIR filter
• Third order noise shaper operating at 128fsgenerates
the bitstream for the DAC
• Filter Stream DAC (FSDAC).
2000 Mar 283
Philips SemiconductorsPreliminary specification
96 kHz IEC 958 audio DACUDA1351TS
4QUICK REFERENCE DATA
SYMBOLPARAMETERCONDITIONSMIN.TYP.MAX.UNIT
Supplies
V
DDD
V
DDA
I
DDA(DAC)
I
DDA(PLL)
I
DDD(C)
I
DDD
Ppower consumption at 48 kHz DAC in playback mode−80−mW
General
t
rst
T
amb
Digital-to-analog converter
V
o(rms)
(THD + N)/S total harmonic
S/Nsignal-to-noise ratio at 48 kHz f
α
cs
∆V
o
digital supply voltage2.73.03.6V
analog supply voltage2.73.03.6V
analog supply current of DAC power-on−8.0−mA
power-down−750−µA
analog supply current of PLLat 48 kHz−0.7−mA
at 96 kHz−1.0−mA
digital supply current of coreat 48 kHz−16.0−mA
at 96 kHz−24.5−mA
digital supply currentat 48 kHz−2.0−mA
at 96 kHz−3.0−mA
DAC in Power-down mode−58−mW
power consumption at 96 kHz DAC in playback mode−109−mW
DAC in Power-down mode−87−mW
reset active time−250−µs
ambient temperature−40−+85°C
1. The output voltage of the DAC is proportional to the DAC power supply voltage.
5ORDERING INFORMATION
TYPE
NUMBER
NAMEDESCRIPTIONVERSION
PACKAGE
UDA1351TSSSOP28plastic shrink small outline package; 28 leads; body width 5.3 mmSOT341-1
2000 Mar 284
Philips SemiconductorsPreliminary specification
96 kHz IEC 958 audio DACUDA1351TS
6BLOCK DIAGRAM
handbook, full pagewidth
V
DDA(PLL)
V
SSA(PLL)
V
DDD(C)
L3MODE
L3CLOCK
L3DATA
SELSTATIC
SPDIF
V
DDD
V
SSD
V
SSD(C)
24
23
TIMING CIRCUIT
6
10
9
8
26
13
3
7
12
n.c.
TEST1TEST3
CLOCK
AND
L3
INTERFACE
SLICER
1, 2, 27
TEST2
18
4
IEC 958
DECODER
16
LOCK
TEST4
28
UDA1351TS
V
SSA
V
DDA
21
25
22
V
DDA(DAC)
V
VOUTL
DAC
AUDIO FEATURE PROCESSOR
SSA(DAC)
14
15
NOISE SHAPER
INTERPOLATOR
V
ref
VOUTR
19
20
DAC
17
11
MGU032
MUTE
5
RESET
Fig.1 Block diagram.
2000 Mar 285
Philips SemiconductorsPreliminary specification
96 kHz IEC 958 audio DACUDA1351TS
7PINNING
SYMBOLPINTYPE
(1)
DESCRIPTION
n.c.1−not connected
n.c.2−not connected
V
DDD
TEST14DIDtest pin 1; must be connected to digital ground (V
3DSdigital supply voltage
SSD
)
RESET5DISDreset input
V
DDD(C)
V
SSD
6DSdigital supply voltage for core
7DGNDdigital ground
L3DATA8DIOSL3 interface data input and output
L3CLOCK9DISL3 interface clock input
L3MODE10DISL3 interface mode input
MUTE11DIDmute control input
V
SSD(C)
12DGNDdigital ground
SPDIF13AIIEC 958 channel input
V
DDA(DAC)
14ASanalog supply voltage for DAC
VOUTL15AOanalog DAC left channel output
LOCK16DOSPDIF and PLL lock indicator output
VOUTR17AOanalog DAC right channel output
TEST218DIDtest pin 2; must be connected to digital ground (V
V
ref
V
SSA(DAC)
V
SSA
V
DDA
V
SSA(PLL)
V
DDA(PLL)
19ADAC reference voltage
20AGNDanalog ground for DAC
21AGNDanalog ground
22ASanalog supply voltage
23AGNDanalog ground for PLL
24ASanalog supply voltage for PLL
SSD
)
TEST425DIUtest pin 4; must be connected to the digital supply voltage (V
SELSTATIC26DIUstatic pin control selection input
n.c.27−not connected
TEST328DISDtest pin 3; must be connected to digital ground (V
SSD
)
DDD
)
Note
1. See Table 1.
2000 Mar 286
Philips SemiconductorsPreliminary specification
96 kHz IEC 958 audio DACUDA1351TS
Table 1 Pin type references
PIN TYPEDESCRIPTION
DSdigital supply
DGNDdigital ground
ASanalog supply
AGNDanalog ground
DIdigital input
DISdigital Schmitt-triggered input
DIDdigital input with internal pull-down resistor
DISDdigital Schmitt-triggered input with internal pull-down resistor
DIUdigital input with internal pull-up resistor
DOdigital output
DIOdigital input and output
DIOSdigital Schmitt-triggered input and output
Aanalog reference voltage
AIanalog input
AOanalog output
handbook, halfpage
V
DDA(DAC)
n.c.
1
n.c.
2
3
V
DDD
TEST1
4
RESET
V
DDD(C)
L3DATA
L3CLOCK
L3MODE
V
SSD(C)
V
SSD
MUTE
SPDIF
5
6
7
UDA1351TS
8
9
10
11
12
13
14
Fig.2 Pin configuration.
MGU033
TEST3
28
n.c.
27
26
SELSTATIC
25
TEST4
24
V
V
23
V
22
V
21
V
20
V
19
TEST2
18
VOUTR
17
LOCK
16
VOUTL
15
DDA(PLL)
SSA(PLL)
DDA
SSA
SSA(DAC)
ref
2000 Mar 287
Philips SemiconductorsPreliminary specification
96 kHz IEC 958 audio DACUDA1351TS
8FUNCTIONAL DESCRIPTION
TheUDA1351TS isa low costaudio IEC 958decoder with
an on-board DAC. The minimum audio input sampling
frequency conforming to the IEC958 standard is 28.0 kHz
and the maximum audio sampling frequency is 100.0 kHz.
8.1Clock regeneration and lock detection
The UDA1351TS contains an on-board PLL for
regenerating a system clock from the IEC 958 input
bitstream.
Note: If there is no input signal, the PLL generates a
minimum frequency and the output spectrum shifts
accordingly. Since the analog output does not have an
analog mute, this means noise that is out of band under
normal conditions can move into the audio band.
When the on-board clocklocks tothe incoming frequency,
the lock indicator bit is set and can be read via the
L3 interface. Internally, the PLL lock indication is
combined with thePCM statusbit ofthe input data stream.
When both the IEC 958 decoder and the on-board clock
have locked to the incoming signal and the input data
stream is PCM data, pin LOCK will beasserted. However,
when the IC is locked but the PCM status bit reports
non-PCM data, pin LOCK is returned to LOW level.
The lock indication output can be used, for example, for
muting purposes. The lock signal can be used to drive an
external analog muting circuitto prevent out of bandnoise
from becoming audible when the PLL runs at its minimum
frequency (e.g. when there is no SPDIF input signal).
8.2Mute
The UDA1351TS is equippedwith a cosine roll-off mutein
the DSP data path of the DAC part. Muting the DAC, by
pin MUTE (in static mode) or via bit MT (in L3 mode), will
result in a soft mute, asshown in Fig.3. The cosine roll-off
soft mute takes 32 x 32 samples = 24 ms at 44.1 kHz
sampling frequency.
When operating in the L3 control mode, the device will
mute on start-up. In L3 mode, it is necessary to explicitly
switch off themute foraudio output bymeans ofthe MT bit
in the L3 register.
Inthe L3 mode,pin MUTE does nothave anyfunction (the
same holds for several other pins) and can either be left
open circuit (since it has an internal pull-down resistor) or
be connected to ground.
handbook, halfpage
1
mute
factor
0.8
0.6
0.4
0.2
0
01051525
MGU119
20
t (ms)
Fig.3 Mute as a function of raised cosine roll-off.
8.3Auto mute
By default, the DAC outputs will be muted until the IC is
locked, regardless of the level on pin MUTE (in static
mode) or the state of bit MT of the sound feature register
(in L3 mode). In this way, only valid data will be passed to
the outputs. This mute is done in the SPDIF interface and
is a hard mute, not a cosine roll-off mute.
If needed, this muting can be bypassed by setting
bit AutoMT to logic 0 via the L3 interface. As a result, the
IC will no longer mute during out-of-lock situations.
8.4Data path
The UDA1351TS data path consists of the IEC 958
decoder, the audio feature processor, digital interpolator
and noise shaper and the DACs.
8.4.1IEC 958
INPUT
The UDA1351TS IEC 958 decoder features an on-chip
amplifierwithhysteresis, which amplifiesthe IEC 958input
signal to CMOS level (see Fig.4).
All 24 bits of data for left and right are extracted from the
input bitstream as well as several of the IEC 958 key
channel-status bits.
2000 Mar 288
Philips SemiconductorsPreliminary specification
96 kHz IEC 958 audio DACUDA1351TS
When used in the L3 control mode, it provides the
following additional features:
• Volume control, using 6 bits
• Bass boost control, using 4 bits
handbook, halfpage
75 Ω
10 nF
180 pF
13SPDIF
UDA1351TS
Fig.4 IEC 958 input circuit and typical application.
MGU034
• Treble control, using 2 bits
• Mode selection of thesound processingbass boost and
treble filters: flat, minimum and maximum
• Soft mute control with raised cosine roll-off
• De-emphasis selection of the incoming data stream for
fs= 32.0, 44.1 and 48.0 kHz.
8.4.3INTERPOLATOR
The UDA1351TS includes an on-board interpolating filter
which converts the incomingdata stream from 1fsto 128f
by cascading a recursive filter and a FIR filter.
Table 2 Interpolator characteristics
s
The extracted key parameters are:
• Pre-emphasis
• Audio sample frequency
• Two-channel PCM indicator
• Clock accuracy.
Both the lock indicator and the key channel status bits are
accessible via the L3 interface.
The UDA1351TS supports the following sample
frequencies and data bit rates:
fs= 32.0 kHz, resulting in a data rate of 2.048 Mbits/s
fs= 44.1 kHz, resulting in a data rate of 2.8224 Mbits/s
fs= 48.0 kHz, resulting in a data rate of 3.072 Mbits/s
fs= 64.0 kHz, resulting in a data rate of 4.096 Mbits/s
fs= 88.2 kHz, resulting in a data rate of 5.6448 Mbits/s
fs= 96.0 kHz, resulting in a data rate of 6.144 Mbits/s.
The UDA1351TS supports timing levels I, II and III, as
specified by the IEC 958 standard.
8.4.2AUDIO FEATURE PROCESSOR
The audio feature processor automatically provides
de-emphasis for the IEC 958 data stream in the static pin
control mode and defaultmute at start-up in theL3 control
mode.
PARAMETERCONDITIONSVALUE (dB)
Pass-band ripple 0 to 0.45f
Stop band>0.65f
s
Dynamic range0 to 0.45f
s
s
±0.03
−50
115
DC gain−−3.5
8.4.4NOISE SHAPER
The third-order noise shaper operates at 128fs. It shifts
in-band quantization noise to frequencies well above the
audio band. This noise shaping technique enables high
signal-to-noise ratios to be achieved. The noise shaper
outputis converted toananalog signal usinga filter stream
DAC.
8.4.5THE FILTER STREAM DAC (FSDAC)
The FSDAC is a semi-digital reconstruction filter that
converts the 1-bit data stream of the noise shaper to an
analog output voltage. The filter coefficients are
implemented as current sources and are summed at
virtual ground of the output operational amplifier. In this
way, very high signal-to-noise performance and low clock
jitter sensitivityis achieved. A post-filter is not needed due
to the inherent filter function of the DAC. On-board
amplifiers convert the FSDAC output current to an output
voltage signal capable of driving a line output.
The output voltage of the FSDAC is scaled proportionally
with the power supply voltage.
2000 Mar 289
Philips SemiconductorsPreliminary specification
96 kHz IEC 958 audio DACUDA1351TS
8.5Control
TheUDA1351TS canbecontrolled bymeans of staticpins
or via the L3 interface. For optimum use of the features of
the UDA1351TS, the L3 control mode is recommended
since only basic functions are available in the static pin
control mode.
It should be noted that the static pin control mode and
control mode, pins L3MODE and L3DATA are used to
select the format for the data output and input interface.
8.5.1STATIC PIN CONTROL MODE
The default values for all non-pin controlled settings are
identical to the default values at start-up in the L3 control
mode.
L3 control mode are mutually exclusive. In the static pin
Table 3 Pin description of static pin control mode
PINNAMEVALUEFUNCTION
Mode selection pin
26SELSTATIC1select static pin control mode; must be connected to V
DDD
Input pins
5RESET0normal operation
1reset
8L3DATA0must be connected to V
9L3CLOCK0must be connected to V
10L3MODE0must be connected to V
SSD
SSD
SSD
11MUTE0normal operation
1mute active
Status pin
16LOCK0clock regeneration and IEC 958 decoder out-of-lock or non-PCM data
detected
1clock regeneration and IEC 958 decoder locked and PCM data detected
Test pins
4TEST10must be connected to digital ground (V
18TEST20must be connected to digital ground (V
25TEST41must be connected to digital supply voltage (V
28TEST30must be connected to digital ground (V
SSD
SSD
SSD
)
)
)
DDD
)
2000 Mar 2810
Philips SemiconductorsPreliminary specification
96 kHz IEC 958 audio DACUDA1351TS
8.5.2L3 CONTROL MODE
The L3 control mode allows maximum flexibility in controlling the UDA1351TS.
It should be noted that, in the L3 control mode, several base-line functions are still controlled by pins on the device and
that, on start-up in the L3 control mode, the output is explicitly muted by bit MT via the L3 interface.
Table 4 Pin description in the L3 control mode
PINNAMEVALUEFUNCTION
Mode selection pin
26SELSTATIC0select L3 control mode; must be connected to V
Input pins
5RESET0normal operation
1reset
8L3DATA−must be connected to the L3-bus
9L3CLOCK−must be connected to the L3-bus
10L3MODE−must be connected to the L3-bus
Status pin
16LOCK0clock regeneration and IEC 958 decoder out-of-lock or non-PCM data
detected
1clock regeneration and IEC 958 decoder locked and PCM data detected
Test pins
4TEST10must be connected to ground (V
18TEST20must be connected to ground (V
SSD
SSD
)
)
25TEST41must be connected to digital supply voltage (V
28TEST30must be connected to ground (V
SSD
)
SSD
DDD
)
2000 Mar 2811
Philips SemiconductorsPreliminary specification
96 kHz IEC 958 audio DACUDA1351TS
8.6L3 interface
8.6.1GENERAL
The UDA1351TS has an L3 microcontroller interface and
all the digital sound processing features and various
system settings can be controlled by a microcontroller.
The controllable settings are:
• Restoring L3 defaults
• Power-on
• Selection of filter mode and settings of treble and bass
boost
• Volume settings
• Selection of soft mute via cosine roll-off and bypass of
auto mute
• Selection of de-emphasis (only effective in L3 control
mode).
The readable settings are:
• Mute status of interpolator
• PLL locked
• SPDIF input signal locked
• Audio Sample Frequency (ASF)
• Valid PCM data detected
• Pre-emphasis of the IEC 958 input signal
• ACcuracy of the Clock (ACC).
Theexchange ofdata and controlinformation betweenthe
microcontroller and the UDA1351TS is LSB first and is
accomplished through a serial hardware L3 interface
comprising the following pins:
• L3DATA: data line
• L3MODE: mode line
• L3CLK: clock line.
The exchange of bytes via the L3 interface is LSB first.
The L3 format has two modes of operation:
• Address mode
• Data transfer mode.
The address mode is used to select a device for a
subsequent data transfer. The address mode is
characterized by L3MODE being LOW and a burst of
8 pulses on L3CLOCK, accompanied by eight bits (see
Fig.5). The data transfer mode is characterized by
L3MODE being HIGH and is used to transfer one or more
bytes representing a register address, instruction or data.
Basically, two types of data transfers can be defined:
• Write action: data transfer to the device
• Read action: data transfer from the device.
Remark: when the device is powered up, at least one
L3CLOCK pulse must begiven tothe L3 interfaceto wake
up the interface before starting sending to the device,
see Fig.5. This is only needed once after the device is
powered up.
8.6.2DEVICE ADDRESSING
The device address consists of one byte with:
• Data Operating Mode (DOM) bits 0 and 1 representing
the type of data transfer (see Table 5)
• Address bits 2 to 7 representing a 6-bit device address.
Table 5 Selection of data transfer
DOM
TRANSFER
BIT 0BIT 1
00not used
10not used
01write data or prepare read
11read data
8.6.3REGISTER ADDRESSING
After sending the device address (including DOM bits),
indicating whether the information is to be read or written,
one data byte is sent using bit 0 to indicate whether the
information will be read or written and bits 1 to 7 for the
destination register address.
Basically, there are three methods for register addressing:
1. Addressing for write data: bit 0 is logic 0 indicating a
write action to the destination register, followed by
bits 1 to 7 indicating the register address (see Fig.5)
2. Addressing for prepare read:bit 0 is logic 1, indicating
that data will be read from the register (see Fig.6)
3. Addressing for data read action. Here, the device
returns a register address prior to sending data from
thatregister. When bit 0is logic 0, theregister address
is valid; when bit 0 is logic 1, the register address is
invalid.
2000 Mar 2812
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2000 Mar 2813
L3 wake-up pulse after power-up
L3CLOCK
L3MODE
register address
data byte 1data byte 2
MGS753
L3DATA
device address
0
10
DOM bits
write
Fig.5 Data write mode (for L3 version 2).
Philips SemiconductorsPreliminary specification
96 kHz IEC 958 audio DACUDA1351TS
L3CLOCK
L3MODE
L3DATA
device address
0
111
DOM bits
prepare readsend by the device
register addressdevice addressregister address
1
read
0/1
valid/non-valid
Fig.6 Data read mode.
data byte 1data byte 2
MGS754
Philips SemiconductorsPreliminary specification
96 kHz IEC 958 audio DACUDA1351TS
8.6.4DATA WRITE MODE
The data write mode is explained in the signal diagram of
Fig.5. For writing data to a device,four bytes must be sent
(see Table 6):
1. One byte starting with ‘01’ for signalling the write
action to the device, followed by the device address
(‘011000’ for the UDA1351TS)
2. One byte starting with a ‘0’ for signalling the write
action, followed by seven bits indicating the
destination addressin binary format with A6 being the
MSB and A0 being the LSB
3. Twodata byteswith D15 being the MSB and D0 being
the LSB.
Itshould be notedthat eachtime anewdestination register
address needs to be written, the device address must be
sent again.
8.6.5DATA READ MODE
To readdata from the device, a prepare readmust first be
doneand thendata read. Thedata read modeis explained
in the signal diagram of Fig.6.
For readingdata from a device, the following six bytes are
involved (see Table 7):
1. One byte with the device address, including ‘01’ for
signalling the write action to the device
2. One byte is sent with the register address from which
dataneeds to beread. This bytestartswith a ‘1’,which
indicates that there will be a read action from the
register, followed again by seven bits for the
destination address inbinary format,with A6 beingthe
MSB and A0 being the LSB
3. Onebyte with thedeviceaddress, including ‘11’is sent
to the device. The ‘11’ indicates that the device must
write data to the microcontroller
4. One byte, sent by the device to the bus, with the
(requested) register address and a flag bit indicating
whetherthe requestedregister was valid(bit is logic 0)
or invalid (bit is logic 1)
5. Two bytes, sent bythe deviceto the bus, with the data
information in binary format, with D15 being the MSB
and D0 being the LSB.
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2000 Mar 2816
8.6.7OVERVIEW OF L3 INTERFACE REGISTERSTable 9 UDA1351TS register map
Philips SemiconductorsPreliminary specification
96 kHz IEC 958 audio DACUDA1351TS
ADDRFUNCTION
Writable settings
00Hsystem
parameters
default10
10Hsound
features
default00000000001
11Hvolume
control DAC
default000000
40Hmultiplex
parameters
default0
7FHrestore
L3 defaults
Readable settings
18Hinterpolator
parameters
38HSPDIF input
and lock
parameters
BIT
D15D14D13D12D11D10D9D8D7D6D5D4D3D2D1D0
PON
(1)
(1)
0
(2)
1
(1)
0
(1)
0
M1M0BB3BB2BB1BB0TR1TR0DE1DE0MT
VC5VC4VC3VC2VC1VC0
AutoMTRST
PLL
(1)
(1)
0
(1)
0
(1)
0
10
MT
stat
PLL
lock
SPD
lock
ASF1 ASF0 PCM
stat
PREACC1 ACC0
Notes
1. When writing new settings via the L3 interface, these bits should always remain at logic 0 (default value) to warrant correct operation.
2. When writing new settings via the L3 interface, these bits should always remain at logic 1 (default value) to warrant correct operation.
Philips SemiconductorsPreliminary specification
96 kHz IEC 958 audio DACUDA1351TS
8.6.8WRITABLE REGISTERS
8.6.8.1Restoring L3 defaults
By writing to the 7FH register, all L3 control values are
restored to their default values. Only the L3 interface is
affected: the system will not be reset. Consequently,
readable registers that are not reset can be affected.
8.6.8.2Power-on
A 1-bit value to switch the DAC on and off.
Table 10 Power-on setting
PONFUNCTION
0power-down
1power-on (default setting)
8.6.8.3Filter mode selection
A 2-bit value to program the mode for the sound
processing filters of bass boost and treble.
Table 11 Filter mode settings
M1M0FUNCTION
00flat (default setting)
01minimum
10
11maximum
8.6.8.4Treble
A 2-bit value to program the treble setting, in combination
with the filter mode settings. At fs= 44.1 kHz, the −3dB
point for minimum setting is 3.0 kHz and the −3 dB point
for maximum setting is 1.5 kHz. The default value is ‘00’.
Table 12 Treble settings
LEVEL (dB)
TR1TR0
FLATMIN.MAX.
00000
01022
10044
11066
8.6.8.5Bass boost
A 4-bit value to program the bass boost setting, in
combination with the filter mode settings. Atfs= 44.1 kHz,
the −3 dB point for minimum setting is 250 Hz and the
−3 dB point for maximum setting is 300 Hz. The default
A 1-bitvalue to activate mute during out-of-lock. In normal
operation, the output isautomatically hardmuted whenan
out-of-lock situation is detected. Setting this bit to logic 0
will disable that function.
Table 17 Auto mute setting
Auto MTFUNCTION
0do not mute output during out-of-lock
1mute output during out-of-lock (default
setting)
8.6.8.10PLL reset
A 1-bit value to reset the PLL. This is thebit which is set in
the initialization string. When this bit is asserted, the PLL
will be reset and the output clock of the PLL will be forced
to its lowest value, which is in the area of a few MHz.
Table 18 PLL reset
RST PLLFUNCTION
0normal operation (default)
1PLL is reset
8.6.9READABLE REGISTERS
8.6.9.1Mute status
A 1-bit value indicating whether the interpolator is muting
or not muting.
Table 19 Interpolator mute status
MT statFUNCTION
0no muting
1muting
8.6.9.2PLL lock detection
A 1-bit value indicating that the clock regeneration is
locked.
Table 20 PLL lock indication
PLL lockFUNCTION
0out-of-lock
1locked
8.6.9.3SPDIF lock detection
A 1-bitvalue indicating the IEC 958 decoder is locked and
is decoding correct data.
Table 21 SPDIF lock detection
SPD lockFUNCTION
0not locked or non-PCM data detected
1locked and PCM data detected
2000 Mar 2818
Philips SemiconductorsPreliminary specification
96 kHz IEC 958 audio DACUDA1351TS
8.6.9.4Audio sample frequency detection
A 2-bit value indicating the audio sample frequency of the
IEC 958 input signal.
Table 22 Audio sample frequency detection
ASF1ASF0FUNCTION
0044.1 kHz
01undefined
1048.0 kHz
1132.0 kHz
8.6.9.5PCM detection
A 1-bit value which indicates whether the IEC 958 input
contains PCM audio data or other binary data.
Table 23 Two channel PCM input detection
PCM statFUNCTION
0input with two channel PCM data
1input without two channel PCM data
8.6.9.6Pre-emphasis detection
A 1-bit value that indicates whether the pre-emphasis bit
was set on the IEC 958 input signal or not set.
Table 24 Pre-emphasis detection
PREFUNCTION
0no pre-emphasis
1pre-emphasis
8.6.9.7Clock accuracy detection
A 2-bitvalue indicating whether the timing accuracy of the
IEC 958 input signal conforms to the IEC 958
specification.
Table 25 Input signal accuracy detection
ACC1ACC0FUNCTION
00level II
01levelI
10level III
11undefined
9LIMITING VALUES
In accordance with the Absolute Maximum Rating System (IEC 60134).
SYMBOLPARAMETERCONDITIONSMIN.MAX.UNIT
V
DD
T
xtal
T
stg
T
amb
V
es
supply voltagenote 12.75.0V
crystal temperature−25+150°C
storage temperature−65+125°C
ambient temperature−40+85°C
electrostatic handling voltageHuman Body Model (HBM); note 2−2000 +2000 V
Machine Model (MM); note 3−200+200V
I
lu(prot)
I
sc(DAC)
latch-up protection currentT
short-circuit current of DACT
= 125 °C; VDD= 3.6 V−200mA
amb
=0°C; VDD= 3 V; note 4
amb
output short circuited to V
output short circuited to V
SSA(DAC)
DDA(DAC)
−482mA
−346mA
Notes
1. All V
and VSS connections must be made to the same power supply.
DD
2. JEDEC class 2 compliant.
3. JEDEC class B compliant, except pin V
SSA(PLL)
, which can withstand ESD pulses of −130 to +130 V.
4. DAC operation after short circuiting cannot be warranted.
2000 Mar 2819
Philips SemiconductorsPreliminary specification
96 kHz IEC 958 audio DACUDA1351TS
10 THERMAL CHARACTERISTICS
SYMBOLPARAMETERCONDITIONSVALUEUNIT
R
th(j-a)
11 CHARACTERISTICS
V
DDD=VDDA
ground; unless otherwise specified.
SYMBOLPARAMETERCONDITIONSMIN.TYP.MAX.UNIT
Supplies; note 1
V
DDA
V
DDA(DAC)
V
DDA(PLL)
V
DDD
V
DDD(C)
I
DDA(DAC)
I
DDA(PLL)
I
DDD(C)
I
DDD
Ppower consumption at 48 kHzDAC in playback mode−80−mW
Digital input pins
V
IH
V
IL
V
hys(RESET)
input leakage current−−10µA
I
LI
C
i
R
pu(int)
R
pd(int)
Digital output pins
V
OH
V
OL
I
L(max)
thermal resistance from junction to ambientin free air85K/W
= 3.0 V; IEC 958 input with fs= 48.0 kHz; T
=25°C; RL=5kΩ; all voltages measured with respect to
amb
analog supply voltage2.73.03.6V
analog supply voltage for DAC2.73.03.6V
analog supply voltage for PLL2.73.03.6V
digital supply voltage2.73.03.6V
digital supply voltage for core2.73.03.6V
analog supply current of DACpower-on−8.0−mA
power-down−750−µA
analog supply current of PLLat 48 kHz−0.7−mA
at 96 kHz−1.0−mA
digital supply current of coreat 48 kHz−16.0−mA
at 96 kHz−24.5−mA
digital supply currentat 48 kHz−2.0−mA
at 96 kHz−3.0−mA
DAC in Power-down mode −58−mW
power consumption at 96 kHzDAC in playback mode−109−mW
DAC in Power-down mode −87−mW
HIGH-level input voltage0.8V
LOW-level input voltage−0.5−+0.2V
hysteresis voltage on
LOW-level output voltageIOL=2mA−−0.4V
maximum load current−3−mA
V
2000 Mar 2820
Philips SemiconductorsPreliminary specification
96 kHz IEC 958 audio DACUDA1351TS
SYMBOLPARAMETERCONDITIONSMIN.TYP.MAX.UNIT
Digital-to-analog converter; note 2
V
ref
V
o(rms)
(THD + N)/S total harmonic
S/Nsignal-to-noise ratio at 48 kHzf
α
cs
∆V
o
IEC 958 input
V
i(p-p)
R
i
V
hys
Notes
1. All supply pins VDD and VSS must be connected to the same external power supply unit.
2. When the DAC must drive ahigher capacitiveload (above50 pF), a series resistor of 100 Ω mustbe usedto prevent
oscillations in the output stage of the operational amplifier.
Microcontroller L3 interface timing (see Figs 7 and 8)
T
cy(CLK)(L3)
t
CLK(L3)H
t
CLK(L3)L
t
su(L3)A
t
h(L3)A
t
su(L3)D
t
h(L3)D
t
(stp)(L3)
t
su(L3)DA
t
h(L3)DA
t
su(L3)R
t
h(L3)R
= 2.7 to 3.6 V; T
= −40 to +85 °C; RL=5kΩ; all voltages measured with respect to ground; unless
amb
reset active time−250µs
time to lockfs= 32.0 kHz−85.0ms
f
= 44.1 kHz−63.0ms
s
= 48.0 kHz−60.0ms
f
s
f
= 48.0 kHz−40.0ms
s
L3CLOCK cycle time500−ns
L3CLOCK HIGH time250−ns
L3CLOCK LOW time250−ns
L3MODE set-up time for address mode190−ns
L3MODE hold time for address mode190−ns
L3MODE set-up time for data transfer mode190−ns
L3MODE hold time for data transfer mode190−ns
L3MODE stop time in data transfer mode190−ns
L3DATA set-up time in address and data
190−ns
transfer mode
L3DATA hold time in address and data
30−ns
transfer mode
L3DATA set-up time in data transfer moderead mode50−−
L3DATA hold time in data transfer moderead mode360−−
2000 Mar 2822
Philips SemiconductorsPreliminary specification
96 kHz IEC 958 audio DACUDA1351TS
handbook, full pagewidth
L3MODE
L3CLOCK
L3DATA
t
h(L3)A
t
CLK(L3)L
t
su(L3)DA
t
CLK(L3)H
t
BIT 0
su(L3)A
Fig.7 Timing for address mode.
t
h(L3)DA
t
su(L3)A
t
h(L3)A
T
cy(CLK)(L3)
BIT 7
MGL723
handbook, full pagewidth
L3MODE
L3CLOCK
L3DATA
L3DATA
write
read
t
t
su(L3)D
t
en(L3)DA
stp(L3)
t
CLK(L3)L
t
CLK(L3)H
t
su(L3)R
t
su(L3)DA
t
h(L3)DA
BIT 0
t
h(L3)R
Fig.8 Timing for data transfer mode.
T
cy(CLK)L3
t
t
h(L3)DA
BIT 7
t
dis(L3)DA
h(L3)D
t
stp(L3)
MGL889
2000 Mar 2823
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2000 Mar 2824
ndbook, full pagewidth
13 APPLICATION INFORMATION
Philips SemiconductorsPreliminary specification
96 kHz IEC 958 audio DACUDA1351TS
V
V
DDD(C)
L3-bus
IEC
channel
DDA
L27
BZN32A07
X16
X11
V
DDA
static
R41
75 Ω
C11
100 µF
(16 V)
J14
L3
L26
BZN32A07
100 nF
3
V
DDD(C)
2
1
C48
180 pF
(50 V)
C41
(50 V)
100 µF
C45
10 nF
(50 V)
C12
(16 V)
X1
X1
X1
X1
X1
X1
X1
X1
C42
100 nF
(50 V)
V
DDA
V
SSA
V
DDD(C)
L3CLOCK
L3MODE
L3DATA
SELSTATIC
SPDIF
22
21
6
9
10
8
26
13
X1
X1
DDA(PLL)
SSA(PLL)
V
V
24
X1
TEST1
4
UDA1351TS
X1
TEST2
18
X1
TEST3
28
V
DDD
X1
TEST4
2523
X1
X1
SSA(DAC)
DDA(DAC)
V
V
2014
L29
V
C13
10 µF
(16 V)
mute
no mute
X18
X13
DDA
output
left
C43
100 nF
(50 V)
X1
V
ref
19
C40
X1
RESET
5
MUTE
11
n.c.
1
n.c.
2
V
SSD(C)
12
n.c.
27
VOUTL
15
100 nF
(50 V)
V
X1
X1
X1
X1
X1
C15
X1
47 µF
(16 V)
C14
100 µF
(16 V)
100 nF
V
DDD(C)
R43
10 kΩ
C44
(50 V)
DDD(C)
100 Ω
BZN32A07
J26
3
2
1
R44
ground
+3 V
AGND DGND
C3
100 µF
(16 V)
AGND DGND
C5
100 µF
(16 V)
3
7
DDD
V
X1
V
X1
SSD
lock
16
LOCK
X1
R39
1 kΩ
V5
J1
V
DDA
J3
V
DDD(C)
J2
V
DDD
R38
V
DDD
1 Ω
C9
100 µF
(16 V)
C28
100 nF
(50 V)
17
MGU035
47 µF
(16 V)
R45
10 kΩ
100 Ω
C16
X1
VOUTR
R46
X19
X14
output
right
Fig.9 Test and application diagram.
Philips SemiconductorsPreliminary specification
96 kHz IEC 958 audio DACUDA1351TS
14 PACKAGE OUTLINE
SSOP28: plastic shrink small outline package; 28 leads; body width 5.3 mm
SOT341-1
D
c
y
Z
2815
A
2
A
pin 1 index
114
w M
b
e
p
1
E
H
E
detail X
Q
L
p
L
(A )
A
X
v M
A
A
3
θ
02.55 mm
scale
DIMENSIONS (mm are the original dimensions)
UNITA1A2A3b
Note
1. Plastic or metal protrusions of 0.20 mm maximum per side are not included.
A
max.
0.21
mm
2.0
OUTLINE
VERSION
SOT341-1 MO-150
0.05
1.80
0.25
1.65
IEC JEDEC EIAJ
p
0.38
0.25
0.20
0.09
(1)E(1)(1)
cD
10.4
5.4
10.0
REFERENCES
0.651.25
5.2
2000 Mar 2825
eHELLpQZywv θ
7.9
7.6
1.03
0.63
0.9
0.7
EUROPEAN
PROJECTION
0.130.10.2
1.1
0.7
ISSUE DATE
95-02-04
99-12-27
o
8
o
0
Philips SemiconductorsPreliminary specification
96 kHz IEC 958 audio DACUDA1351TS
15 SOLDERING
15.1Introduction to soldering surface mount
packages
Thistext gives averybrief insight toa complex technology.
A more in-depth account of soldering ICs can be found in
our
“Data Handbook IC26; Integrated Circuit Packages”
(document order number 9398 652 90011).
There is no soldering method that is ideal for all surface
mount IC packages.Wave solderingis notalways suitable
for surface mount ICs, or for printed-circuit boards with
high population densities. In these situations reflow
soldering is often used.
15.2Reflow soldering
Reflow soldering requires solder paste (a suspension of
fine solder particles, flux and binding agent) to be applied
tothe printed-circuitboard byscreen printing, stencillingor
pressure-syringe dispensing before package placement.
Several methods exist for reflowing; for example,
infrared/convection heating in a conveyor type oven.
Throughput times (preheating, soldering and cooling) vary
between 100 and 200 seconds depending on heating
method.
Typical reflow peak temperatures range from
215 to 250 °C. The top-surface temperature of the
packages should preferable be kept below 230 °C.
If wave soldering is used the following conditions must be
observed for optimal results:
• Use a double-wave soldering method comprising a
turbulent wavewith high upwardpressure followed bya
smooth laminar wave.
• For packages with leads on two sides and a pitch (e):
– larger than or equal to 1.27 mm, the footprint
longitudinal axis is preferred to be parallel to the
transport direction of the printed-circuit board;
– smaller than 1.27 mm, the footprint longitudinal axis
must be parallel to the transport direction of the
printed-circuit board.
The footprint must incorporate solder thieves at the
downstream end.
• Forpackages with leadsonfour sides, thefootprint must
be placedat a 45° angle to the transport direction of the
printed-circuit board. The footprint must incorporate
solder thieves downstream and at the side corners.
During placement and before soldering, the package must
be fixed with a droplet of adhesive. The adhesive can be
applied by screen printing, pin transfer or syringe
dispensing. The package can be soldered after the
adhesive is cured.
Typical dwell time is 4 seconds at 250 °C.
A mildly-activated flux will eliminate the need for removal
of corrosive residues in most applications.
15.3Wave soldering
Conventional single wave soldering is not recommended
forsurface mount devices(SMDs)or printed-circuit boards
with a high component density, as solder bridging and
non-wetting can present major problems.
To overcome these problems the double-wave soldering
method was specifically developed.
2000 Mar 2826
15.4Manual soldering
Fix the component by first soldering two
diagonally-opposite end leads. Use a low voltage (24 V or
less) soldering iron applied to the flat part of the lead.
Contact time must be limited to 10 seconds at up to
300 °C.
When using a dedicated tool, all other leads can be
soldered in one operation within 2 to 5 seconds between
270 and 320 °C.
Philips SemiconductorsPreliminary specification
96 kHz IEC 958 audio DACUDA1351TS
15.5Suitability of surface mount IC packages for wave and reflow soldering methods
1. All surface mount (SMD) packages are moisture sensitive. Depending upon the moisture content, the maximum
temperature (with respect to time) and body size of the package, there is a risk that internal or external package
cracks may occur due to vaporization of the moisture in them (the so called popcorn effect). For details, refer to the
Drypack information in the
2. These packages are not suitable for wave soldering as a solder joint between the printed-circuit board and heatsink
(at bottom version) can not be achieved, and as solder may stick to the heatsink (on top version).
3. If wave soldering is considered, then the package must be placed at a 45° angle to the solder wave direction.
The package footprint must incorporate solder thieves downstream and at the side corners.
4. Wave soldering is only suitable for LQFP, TQFP and QFP packages with a pitch (e) equal to or larger than 0.8 mm;
it is definitely not suitable for packages with a pitch (e) equal to or smaller than 0.65 mm.
5. Wave soldering is onlysuitable for SSOP and TSSOPpackages with a pitch (e) equal toor larger than 0.65 mm; it is
definitely not suitable for packages with a pitch (e) equal to or smaller than 0.5 mm.
16 DEFINITIONS
Data sheet status
Objective specificationThis data sheet contains target or goal specifications for product development.
Preliminary specificationThis data sheet contains preliminary data; supplementary data may be published later.
Product specificationThis data sheet contains final product specifications.
Limiting values
Limiting valuesgiven are in accordance with the Absolute Maximum Rating System (IEC 60134). Stress above one or
more of the limiting values may cause permanent damage to the device. These are stress ratings only and operation
of the device at these or at any other conditions above those given in the Characteristics sections of the specification
is not implied. Exposure to limiting values for extended periods may affect device reliability.
Application information
Where application information is given, it is advisory and does not form part of the specification.
17 LIFE SUPPORT APPLICATIONS
These products are not designed for use in life support appliances, devices, or systems where malfunction of these
products can reasonably be expected to result in personal injury. Philips customers using or selling these products for
use in such applications do so at their own risk and agree to fully indemnify Philips for any damages resulting from such
improper use or sale.
2000 Mar 2827
Philips Semiconductors – a w orldwide compan y
Argentina: see South America
Australia: 3 Figtree Drive, HOMEBUSH, NSW 2140,
United States: 811 East Arques Avenue, SUNNYVALE, CA 94088-3409,
Tel. +1 800 234 7381, Fax. +1 800 943 0087
Uruguay: see South America
Vietnam: see Singapore
Yugoslavia: PHILIPS, Trg N. Pasica 5/v, 11000 BEOGRAD,
Tel. +381 11 3341 299, Fax.+381 11 3342 553
For all other countries apply to: Philips Semiconductors,
International Marketing & Sales Communications, Building BE-p, P.O. Box 218,
5600 MD EINDHOVEN, The Netherlands, Fax. +31 40 27 24825
The information presented in this document does not form part of any quotation or contract, is believed to be accurate and reliable and may be changed
without notice. No liability will be accepted by the publisher for any consequence of its use. Publication thereof does not convey nor imply any license
under patent- or other industrial or intellectual property rights.
2000
Internet: http://www.semiconductors.philips.com
69
Printed in The Netherlands753503/25/01/pp28 Date of release: 2000 Mar 28Document order number: 9397 750 06814
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