tc9444f TOSHIBA Semiconductor CORPORATION, tc9444f Datasheet - Page 8

• Manufacturer Part Number: tc9444f
• Description: Single-chip Karaoke Ic Ii
• Manufacturer: TOSHIBA Semiconductor CORPORATION

SYNM2
2.3
2.4
0
0
0
0
0
0
0
0
1
1
1
1
1
1
1
1
Zero Data Detection Function Common to L/R
data contain a string of digital zeros. This is used to forcibly mute the analog output.
to be output during this period, a zero detection flag is set.
detection, fixing the DZ pin to “L” and disabling the zero detection function (see the microcontroller
interface section below).
Data Output Formats
OBIT2 select the format.
that BCKO is fixed to 64 fs.
the IC internal buffer (see section 2.2).
The TC9444F incorporates a function to output a zero detection flag from the DZ pin when input
Table 2.4 shows the time that elapses until data are detected as zero data. If digital zeros continue
Moreover, setting the DZINH bit in the microcontroller interface mode command to “H” halts zero
A reset sets the DZ signal to “H”.
Table 2.5 and Figure 2.2 show the data output formats. Microcontroller interface bits OBIT and
In master mode, the BCKI clock rate varies through the range shown in Table 2.2. Note, however,
In slave mode, the BCKI input clock is directly output as the data output bit clock (BCKO) through
SYNM1
0
0
0
0
1
1
1
1
0
0
0
0
1
1
1
1
Detection Time
Table 2.4 Digital Zero Data Detection Time
IBIT2
0
0
1
1
0
0
1
1
0
0
1
1
0
0
1
1
fs
Table 2.5 Data Output Formats
IBIT1
0
1
0
1
0
1
0
1
0
1
0
1
0
1
0
1
1024 ms
32 kHz
Master
mode
Slave
mode
8
44.1 kHz
MSB first, Right-Justified mode, 16-bit
data
MSB first, Right-Justified mode, 20-bit
data
MSB first, Right-Justified mode, 24-bit
data
IIS-compatible, 24 bits
MSB first, Right-Justified mode, 16-bit
data
Prohibited
Prohibited
IIS-compatible, 16 bits
MSB first, Right-Justified mode, 16-bit
data
MSB first, Right-Justified mode, 20-bit
data
MSB first, Right-Justified mode, 24-bit
data
IIS-compatible, 24 bits
MSB first, Right-Justified mode, 16-bit
data
MSB first, Right-Justified mode, 20-bit
data
MSB first, Right-Justified mode, 24-bit
data
IIS-compatible, 24 bits
743 ms
Format
683 ms
48 kHz
32 fs (= BCKI)
32 fs (= BCKI)
32 fs (= BCKI)
32 fs (= BCKI)
48 fs (= BCKI)
48 fs (= BCKI)
48 fs (= BCKI)
48 fs (= BCKI)
64 fs (= BCKI)
64 fs (= BCKI)
64 fs (= BCKI)
64 fs (= BCKI)
2002-01-11
TC9444F
BCKI
64 fs
64 fs
64 fs
64 fs