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參數(shù)資料
| 型號： | TDA9614H |
| 廠商： | NXP SEMICONDUCTORS |
| 元件分類： | 消費家電 |
| 英文描述： | Audio processor for VHS hi-fi and linear audio(應(yīng)用于VHS高保真和線性音頻的音頻處理器) |
| 中文描述： | SPECIALTY CONSUMER CIRCUIT, PQFP64 |
| 封裝： | PLASTIC, QFP-64 |
| 文件頁數(shù)： | 28/60頁 |
| 文件大?。?/td> | 570K |
| 代理商： | TDA9614H |
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1995 Mar 21
28
Philips Semiconductors
Preliminary specification
Audio processor for VHS hi-fi
and linear audio
TDA9614H
Table 38
Linear audio playback equalization non-standard settings
6.13
Read byte
Table 39
Bits of read byte
Table 40
Bit CALR; note 1
Note
1.
If CALR = 0, bandpass filters and oscillators have not been calibrated successfully. When an automatic calibration
is started by bit CALS, the end of the calibration cycle can be checked via this bit. If for some reason a successful
calibration can not be made within the available adjustment range, e.g. if no HID signal is available, CALR will remain
logic 0. After calibration the adjustment will be held for as long as the digital supply voltage (V
DDD
) is available.
Table 41
Bit PAFM; note 1
Note
1.
When the hi-fi processing is in playback mode but no Audio FM input signal is found, the IC generates an internal
mute signal which mutes the noise signal coming from the demodulators. The status of this mute signal can be read
via bit PAFM. This signal however is only valid with the hi-fi circuit in playback (RAF = 0 and IPAF = 0).
Table 42
Bit POR; note 1
Note
1.
When the IC is switched on, or a power dip occurs on the digital supply (V
DDD
) line, a Power-on Reset signal is
generated which resets the IC's I
2
C-bus registers and the auto-calibration circuit. If such a situation has occurred
after the last time the read byte has been read, bit POR = 1. After reading the read byte POR is reset to logic 0.
SETTING
MODE
TEST NUMBER 31
Standard play (LP = 0)
3180 and 120
μ
s
2544 and 96
μ
s
3180 and 170
μ
s
2731 and 146
μ
s
not selected
selected
not selected
selected
Long play (LP = 1)
BIT
DESCRIPTION
CALR
PAFM
POR
Calibration ready; see Table 40
Playback Audio FM Mute; see Table 41
Power-On reset; see Table 42
CALR
MODE
DESCRIPTION
0
1
not calibrated
calibrated
IC has not been auto-calibrated [por].
IC has been calibrated successfully.
PAFM
MODE
DESCRIPTION
0
1
AFM available
no AFM carrier
Audio FM signal is detected at FM input.
No audio FM signal detected; hi-fi processing is muted.
POR
MODE
DESCRIPTION
0
1
POR generated
POR pulse is generated since last read.
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