ADAU1445 Analog Devices, ADAU1445 Datasheet - Page 36

• Manufacturer Part Number: ADAU1445
• Manufacturer: Analog Devices

Specifications of ADAU1445

• Instructions/cycles: 3584
• Digital I/o Channels: 24/24
• Analog I/o Channels: 0/0
• Product Description: Digital audio processor with flexible audio routing matrix, 8 × 2-channel ASRC

ADAU1442/ADAU1445/ADAU1446
Packed TDM4 Mode
A special TDM mode is available that allows four channels to be
fit into a space of 64 bit clock cycles. This mode is called packed
TDM4 mode, or MOST™ mode. MOST (Media Oriented Systems
Transport) is a networking standard intended for interconnecting
multimedia components in automobiles and other vehicles. Many
ICs intended to interface with a MOST bus use a packed TDM4
data format.
(4 CHANNELS)
SDATA_OUTx
(64 PERIODS)
SDATA_INx,
(1 PERIOD)
LRCLKx
BCLKx
16 BITS
Figure 29. Packed TDM4 Mode
Rev. C | Page 36 of 92
16 BITS
For this mode to be used, the serial port must be set up with the
following register settings:
•
•
•
See Figure 29 for a timing diagram of the packed TDM4 mode.
This figure is shown with a negative BCLK polarity, a negative
LRCLK polarity, and an MSB delay of 1.
Packed TDM4 mode
Left-justified or delay by 1
Word length of 16 bits
16
BITS
16
BITS