TDA19989 NXP Semiconductors, TDA19989 Datasheet - Page 21

• Manufacturer Part Number: TDA19989
• Description: 150 MHz pixel rate HDMI 1.3 transmitter
• Manufacturer: NXP Semiconductors

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NXP Semiconductors
TDA19989_1
Preliminary data sheet
The I
input with a clock frequency of at least 32 times the input sample frequency f
Audio samples with a precision better than 24-bit are truncated to 24-bit. If the input clock
has a frequency of 32f
LSBs will be set to 0. If the input clock has a frequency of 64f
Philips, the audio word is truncated to 24-bit format and other bits padded with zeros. If
the input clock has a frequency of 64f
specified via software drivers.
The serial data signal carries the serial baseband audio data, sample by sample left/right
interleaved.
The word select signal indicates whether left or right channel information is transferred
over the serial data line.
Fig 13. I
word select
word select
word select
2
S-bus input interface can receive up to 24-bit wide audio samples via the serial data
a. Philips format.
b. Left justified format.
c. Right justified format.
f
f
f
s
s
s
2
S-bus formats
audio clock
audio clock
audio clock
LEFT CHANNEL
LEFT CHANNEL
LEFT CHANNEL
64f
64
64f
(n−1)
(n−1)
f
(n−1)
s
s
s
Rev. 01 — 15 February 2010
MSB
MSB
0 0
s
, only 16-bit audio-samples can be received. In this case, the 8
RIGHT CHANNEL
RIGHT CHANNEL
RIGHT CHANNEL
(n−1)
(n−1)
(n−1)
0
HDMI 1.3 transmitter with HDCP and CEC support
MSB
24-bit audio sample word
24-bit audio sample word
s
LEFT CHANNEL
LEFT CHANNEL
LEFT CHANNEL
and is right justified, audio sample size has to be
(n)
(n)
(n)
24-bit audio sample word
RIGHT CHANNEL
RIGHT CHANNEL
RIGHT CHANNEL
(n)
(n)
(n)
s
LEFT CHANNEL
LEFT CHANNEL
LSB
LEFT CHANNEL
LSB
and is left justified or
(n+1)
(n+1)
(n+1)
0 0
0 0
TDA19989
© NXP B.V. 2010. All rights reserved.
RIGHT CHANNEL
RIGHT CHANNEL
RIGHT CHANNEL
(n+1)
(n+1)
LSB
(n+1)
s
0
0
.
001aah029
001aah031
001aah030
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