ADAU1445YSVZ-3A-RL Analog Devices Inc, ADAU1445YSVZ-3A-RL Datasheet - Page 76

• Manufacturer Part Number: ADAU1445YSVZ-3A-RL
• Description: 175MHZ SigmaDSP,2x8 SRCs
• Manufacturer: Analog Devices Inc
• Series: SigmaDSP®r
• Type: Audio Processorr

Specifications of ADAU1445YSVZ-3A-RL

• Applications: Automotive Audio
• Mounting Type: Surface Mount
• Package / Case: 100-TQFP Exposed Pad, 100-eTQFP, 100-HTQFP, 100-VQFP
• Format: Fixed Point
• Program Memory Size: Not RequiredKB
• Operating Supply Voltage (typ): 1.8/3.3V
• Operating Temp Range: -40C to 105C
• Operating Temperature Classification: Industrial
• Mounting: Surface Mount
• Pin Count: 100
• Lead Free Status / RoHS Status: Lead free / RoHS Compliant
• Lead Free Status / RoHS Status: Lead free / RoHS Compliant

ADAU1442/ADAU1445/ADAU1446
FLEXIBLE TDM MODES
The ADAU1442/ADAU1445/ADAU1446 are able to operate in
a flexible TDM mode, which allows them to interface to a wide
variety of digital audio devices.
SERIAL INP
AND
Th
S
to
ro
in
Fo
sp
In
(ca
C
64 b
It is im
m
st
the 24
com
r
Be
etrieval starts with Input Ch
DATA_IN1 serial input por
ombining the two serial inp
ream can be assigned to inp
put channels.
ust be routed as stereo pair
ute the contents of an arbit
onding serial ports must be s
SDATA_IN0
SDATA_IN1
r this mode to be active, th
override the default setting
flexible TDM mode, each fl
cause the audio data can b
e flexible TDM mode is av
lled slots) of information f
ytes in the flexible stream
bination of slots) in the fl
SETTINGS
input channels is capa
portant to note that, u
...
...
SDATA_IN0
SDATA_IN1
63
31
UT FLEXIBL
LRCLKx
32 33 34 35 36 37 38
0
1
...
...
2
31
63
3
32 33 34 35 36 37 38 39 40 41 42 43 44 45 46 47 48 49 50 51 52 53 54 55 56 57 58 59 60 61 62 63
0
4
exible TDM stream include
E TDM INTE
ts. By using this mode, it is p
s, the data on the flexible
ble of tak
exible TDM stream, as lon
e input in
rary TDM
nlike in the F
annel 0 and increases sequ
ailable for the SDATA_IN0 and
e word length bits of the c
or every
ut ports, this allows for a
ut channels individually. E
s of the serial port and flexi
et to 11 (TDM8 or flexibl
.
1
5
2
6
3
39 40 41
7
frame on the frame clock.
ing data from any slot (or
8-, 16-, or 24-bit format,
4
8
input stream to the
5
ARM, where signals
9
Figure 56. Flexible TDM Interface Mode—Input Routing Example
RFACE MODES
42 43 44 45 46 47 48 49 50 51 52 53 54 55 56 57 58 59 60 61 62 63
6
10 11
Figure 55. Flexible TDM Interface Mode—Input Streams
7
12
8
13 14 15 16 17 18 19 20
9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31
e TDM).
TDM
g as data
total of
s 32 bytes
orre-
entially.
ach of
bly
ossible
Rev. C | Page 76 of 92
FRAME
a single channel may occupy more than one slot. An 8-bit channel
occupies one slot, a 16-bit channel occupies two slots, and a 24-bit
channel occupies three slots. To route flexible TDM data to the
input channels, the starting slot number (mos
and the bit depth (number of bytes, or slots, i the stream) must
be set in the corresponding input channel regist
to Input Channel[23:0] registers). An example o
TDM interface mode is shown in Figure 56.
In this example, Input Channel 0 comes from
Slot 6 on the flexible TDM stream (a 24-bit audi channel). Input
Channel 1 comes from Slot 12 (an 8-bit audio
Channel 2 comes from Slot 21 and Slot 22 on
(a 16-bit audio channel). Input Channel 3 comes from Slot 39,
Slot 40, and Slot 41 (a 24-bit audio channel). For e audio inputs
with a bit depth of less than 24 bits, the LSBs a filled with 0s.
Note that the assignment of slots to input cha
order, with the lowest slot number starting at I ut Channel 0
and increasing sequentially. This is done to en re compatibility
with the automatic input channel assignment (see the Automatic
Input Channel Assignment section).
The default setting of all nine bits high (0x01FF) dicates that the
input channel is configured in the standard seria input interface
mode and does not use the flexible TDM inter
21 22
23 24 25 26 27 28 29 30 31
32
0
...
...
10
11
12
13
14
15
16
17
18
19
20
21
22
23
0
1
2
3
4
5
6
7
8
9
CHANNELS
(24 CH)
INPUT
32
n
np
er (Flexi
0
nne
f th
o
t significa
the
Slo
su
l
re
cha
th
in
face
...
...
10, 11
12, 13
14, 15
16, 17
18, 19
20, 21
22, 23
8, 9
e input flexible
0, 1
2, 3
4, 5
6, 7
t 4, Slot 5, and
ls must be in
input stream
nnel). Input
mode.
ble TDM
nt byte)