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參數(shù)資料
| 型號： | D6571E |
| 廠商： | Electronic Theatre Controls, Inc. |
| 英文描述： | Chip for an All-Digital Telephone Answering Machine with Flash Memory Interface |
| 中文描述： | 芯片的全數(shù)字電話應(yīng)答機(jī)與快閃記憶體介面 |
| 文件頁數(shù)： | 32/117頁 |
| 文件大小： | 551K |
| 代理商： | D6571E |
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D6571E Data Sheet
DS6571E.2
DSP GROUP, INC., 3120 SCOTT BOULEVARD
SANTA CLARA, CA 95054 PH: 408 986-4300 FAX: 408 986-4490
30
Command (C2):
0001
REC
MODE
(11-10)
TONE GEN
C O M M A N D B I T S
(15-12)
(9)
(8 - 0)
REC MODE
0 0
0 0
0 1
TONE GEN
0
1
0
Continue recording or stop record with Tail Cut
Continue recording or stop record with Tail Cut and generate new tone
Suspend Recording - the D6571E terminates recording
(message recording can be resumed later or message can be closed, see RESUME
and CLOSE bits of the C1 command);
Pause Recording (the D6571E stays in Record mode and monitors line but doesn’t
store data into the flash memory), the D6571E will continue recording after
receiving Record command with Rec Mode = 00
Same as above plus new tone will be generated
Read Offset, the D6571E will report current offset within the message
Change compression rate (allows switching between different compression rates
as well as enable and disable gap coding and codec loopback). Switching from/to
uncompressed recording is not allowed.
1 0
0
1 0
1 1
1 1
1
0
1
When REC MODE = 00 or 10 (Continue Recording or Pause)
Command (C2):
0001
REC
MODE
(15-12)
(11-10)
(9)
When TONE GEN = 0:
(C2):
0
TONE GEN
TAIL CUT FACTOR(if TONE = 0) or
TONE INDEX + GAIN (if TONE = 1)
(8 - 0)
0 0
TAIL CUT FACTOR
(6 - 0)
(9)
(8 - 7)
TAIL CUT FACTOR = 0:
TAIL CUT FACTOR = non zero:
For 8 KHz sampling rate TCF = 160 ms for TrueSpeech compression and 240 ms for PCM recording
For 7.2 KHz sampling rate TCF = 178 ms for TrueSpeech compression and 266 ms for PCM recording
When TONE GEN = 1:
(C2):
1
Continue record and monitor status
End record and cut message tail in memory by TAIL CUT FACTOR * TCF
TONE GAIN
TONE INDEX
(4 - 0)
(9)
(8 - 5)
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