TC9446FG Datasheet, PDF (11/41 Pages) Toshiba Semiconductor – Audio Digital Processor for Decode of Dolby Digital (AC-3), MPEG2 Audio

TC9446FG
3) Read-out of 24 bit data
The number of words of data read while data required for the 16 bit address in a 24 bit command is
set up and R/W bit is set to “H”, when reading data of TC9446FG from a MCU during program
operation is set up.
And, after transmitting a 24 bit command, MIACK = “L” is checked and 24 bit data of the required
number of words is read.
MIACK = “L” is checked after command transmission for waiting to set data which should be read
to data buffer. The procedure of read-out of 24 bit data is shown in Figure 4.
MICS = “L”
Checking of MIACK = “L”
(waiting for becoming to MIACK = “L” at the MIACK = “H”)
Write of 24 bit command
(read of data = xxxx1xh)
Checking of MIACK = “L”
(waiting for becoming to MIACK = “L” at the MIACK = “H”)
A 16 bit address and a transmission word
number are set up.
Read of 24 bit data (1)
Read of 24 bit data (2)
It is possible to read out the 24 bit data
until 16 word maximum.
Read of 24 bit data (n)
MICS = “H”
It finished to read of the data
Figure 4 Procedure of Read-Out of 24 Bit Data
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2005-09-28