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參數資料
| 型號： | AMBE2000 |
| 廠商： | Electronic Theatre Controls, Inc. |
| 英文描述： | VOCODER CHIP |
| 中文描述： | 聲碼器芯片 |
| 文件頁數： | 12/47頁 |
| 文件大小： | 324K |
| 代理商： | AMBE2000 |
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AMBE-2000 Vocoder Chip
User’s Manual Version 3.0
page 12
Visit us at
www.dvsinc.com
Confidential Proprietary, Subject to Change
Pin Number
Pin Descriptive Name
Pin Direction
Notes
41
CODEC_TX_DATA
Output
PCM Data from AMBE-2000 to D/A Conveter
27
CODEC_RX_CLK
Input
A/D Serial clock. Should be connected to CODEC_TX_CLK
33
CODEC_TX_CLK
Input
D/A Serial clock Should be connected to CODEC_RX_CLK
51
CLOCK_MODE
Input
If high enables crystal oscillator option for clock source. If low then external oscillator
option is selected. See Section 3.4 for details.
8,11,12,23
36,39,44,45
46, 47,48
49,54,57,64
76,87,90
V
DD
Power
Supply Voltage
1,9,10,25,26
35,40,50,52
53,56,63,65
88,89
GND
Power
Ground
2,3,4,5,6,7,
13,14,15,16
17,18,19,21
22,24,43,55
58,59,60,61
62,66,91,92
93,94,95,96
97,98,99
100
No Connection
These pins must remain unconnected
Note 1:
The AMBE-2000 expects an encoder packet to be read approximately every 20 msec. Following the initial
reset, wait for EPR to go low and read the initial packet (t0). 20 msec later, the next packet (t1) should be ready.
For packet t1 and all following packets use the procedure below:
1) Wait for slightly less than 20 msec.
2) Assert CHAN_TX_STB and read word on CHAN_TX_DATA.
3) If transmitted word not 0x13EC, discard it and repeat step 2.
4) If transmitted word 0x13EC, read 23 more words (rest of packet).
A new packet should be ready every 20 msec after the initial EPR high to low transition. A packet read should take
place every 20 msec. If there is a delay in the read (i.e. a packet is missed), it is recommended that the device be
reset.
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