tc9446fg TOSHIBA Semiconductor CORPORATION, tc9446fg Datasheet - Page 23

• Manufacturer Part Number: tc9446fg
• Description: Audio Digital Processor For Decode Of Dolby Digital Ac-3 , Mpeg2 Audio
• Manufacturer: TOSHIBA Semiconductor CORPORATION

3)
4)
Sampling Frequency (kHz)
DIR input part
amplification circuit, a 5 V-3 V conversion circuit, etc.
Lock detection
outputted at the time of the Ann lock. At the time of the Ann lock, latch operation of reception
recovery data and channel status is stopped, and it holds last value. If the state of a no error
continues the time of the following table, LOCK terminal will be set to “H” level and a reception
recovery will be started.
COAXIAL
OPTICAL
When you input a signal into DIR, please be sure to input, as shown in Figure 17 through a signal
When VCO circuit locks LOCK terminal and it is operating, “H” level is outputted and “L” level is
LOCK Terminal
Data of Receiving
Demodulation
Channel Status
Table 3 Release Time After the Lock Detection Operation
44.1
32
48
96
Figure 18 Internal Operation Timing at Time of Error
V
5 V
V
SS
SS
Period of error
Figure 17 DIR Input Part
Data of Receiving Demodulation t
5 V-3 V level shifter
3 V
V
23
384.0
278.6
256.0
128.0
t
SS
B
t
A
A
(ms)
RX
34
Channel Status t
(3 V input)
DIR
288.0
209.0
192.0
96.0
TC9446FG
B
2005-09-28
(ms)