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Power Supply Voltage: 3.3V
Clock Frequency: Contains a built-in PLL function and generates a clock from the BCLK (256 KHz).
Contains an amplifier, LPF, gain adjustment, AD/DA converter, host I/F, PCM serial I/F and speaker
output function.
Flow of Sound Signal
[Microphone sound]
1. The sound data input from pin 1 of the built-in microphone connector
(CN607) is amplified by the amplifier in the PCM Codec (IC601) and the
ALC (IC603), then input as the built-in microphone to the PCM Codec
(IC601) again.
When the level of the input sound signal is more than the specified
value, the gain is changed and the output signal level is kept constant
at the ALC (IC603). Sound distortion is controlled when the input is
excessive.
2. When the external microphone is attached to the microphone jack
(CN603), the sound signal input from pin 2 of the CN603 is amplified by
the amplifier in the PCM Codec (IC601) and the ALC (IC602), then input
as the external (microphone) to the PCM Codec (IC601) again
The ALC (IC602) works in the same way as the IC603.
3. In the PCM Codec (IC601), after the sound signal is switched between
the built-in microphone and the external microphone by a register
setting from the host, amplification, AD conversion and gain
adjustment are performed.
The sampling frequency of the A/D conversion is 8kHz and it is
converted to the PCM in the format of 8bit and law. Then, 64kbps
data are output to the ASIC (101) through the Serial I/F.
The data transfer of the Serial I/F is BCLK (256 kHz).
4. The data compression of 32kbps is performed in the ADPCM Block of
the ASIC (101) and the data transferred as sound data.
[Speaker Sound]
1. The ADPCM sound data are sent from the PC and, after data
decompression in the ADPCM block of the ASIC (101), the data are
transferred as the sound data of 64kbps to the PCM Codec (IC601)
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Содержание BB-HCM371A - Outdoor Wireless Network Camera
Страница 3: ...1 2 HOW TO RECOGNIZE THAT Pb FREE SOLDER IS USED MAIN BOARD I O BOARD 3 ...
Страница 4: ...CAMERA BOARD 4 ...
Страница 5: ...SENSOR BOARD 5 ...
Страница 6: ...RF BOARD 6 ...
Страница 16: ...6 3 BOTTOM VIEW 6 4 REAR VIEW 16 ...
Страница 29: ...6 Remove Main Board and I O Board from Cabinet Body 7 Remove Connector A Connector B and Connector C 29 ...
Страница 36: ...36 ...
Страница 37: ...37 ...
Страница 39: ...39 ...
Страница 40: ...9 5 CAUTIONS FOR CAMERA BOARD ATTACHMENT 40 ...
Страница 41: ...9 6 CAUTIONS FOR TILT MOTOR ATTACHMENT Attach the Tilt Motor and fix it with the Screws D 41 ...
Страница 44: ...44 ...
Страница 45: ...45 ...
Страница 47: ...10 TROUBLE SHOUTING 10 1 BASIC OPERATION 47 ...
Страница 48: ...10 2 CHECK FOR OTHER FUNCTION 48 ...
Страница 49: ...10 3 CHECK FOR SCREEN BLOCK 49 ...
Страница 50: ...50 ...
Страница 51: ...10 4 CHECK FOR SOUND BLOCK 51 ...
Страница 52: ...10 4 1 Built in Microphone 52 ...
Страница 53: ...10 4 2 External Microphone 10 4 3 Speaker Output 53 ...
Страница 54: ...10 4 4 Common Flow Of Built in Microphone External Microphone And Speaker Output 10 4 5 Check For LAN Block 54 ...
Страница 55: ...10 5 CHECK FOR MOTOR DRIVING BLOCK 10 5 1 Check For The Action Of Pan 55 ...
Страница 56: ...10 5 2 Check For The Action Of Tilt 56 ...
Страница 57: ...10 6 CHECK FOR SD CARD 57 ...
Страница 58: ...58 ...
Страница 59: ...10 7 CHECK FOR POWER SUPPLY BLOCK 59 ...
Страница 60: ...60 ...
Страница 61: ...10 8 CHECK FOR RTC CIRCUIT 10 9 CHECK FOR I O TERMINAL 61 ...
Страница 62: ...10 10 CHECK FOR LED CIRCUIT 62 ...
Страница 63: ...10 11 RF BLOCK 63 ...
Страница 64: ...10 12 CHECK FOR INITIALIZATION 64 ...
Страница 65: ...65 ...
Страница 90: ...C141 ECUV1E103KBV 0 01 90 ...
Страница 92: ...C330 ECUV1H150JCV 15P S 92 ...
Страница 94: ...L404 G1C100M00027 COIL 94 ...
Страница 96: ...R217 ERJ3EKF51R1 51 1 96 ...
Страница 98: ...R420 ERJ3EKF3302 33K 98 ...
Страница 109: ...L71 L72 L73 L74 Q71 CN71 1 8 BB HCM371A SENSOR BOARD ...
Страница 110: ...C72 R71 R72 C71 R73 IC71 CN72 PSUP1466Z PbF C BB HCM371A SENSOR BOARD ...
Страница 115: ...A1 A2 C1 C2 C3 F1 D1 D2 D3 D4 F2 B E G H1 ...
Страница 116: ...H2 I J O K L N M ...
Страница 117: ...Q P R1 R3 S1 S3 R2 S2 ...
Страница 119: ...X X Z2 Z3 Z4 Z5 ...