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參數(shù)資料
| 型號(hào)： | 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(huà)應(yīng)答機(jī)與快閃記憶體介面 |
| 文件頁(yè)數(shù)： | 20/117頁(yè) |
| 文件大?。?/td> | 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
20
(Test Mode = 0011) nor Initialization (Test Mode = 0001)
are available if they don’t follow Flash Hardware
Selection command.
4) Codec Hardware Selection (Test Mode = 0100)
This command configures the system for the various
codec interface operating modes available.
M/S - Configures the D6571E to operate in either Master
or Slave mode of the Codec Interface.
LAW - Configures the D6571E to operate with either an
μ
-law Codec (default) or an A-law Codec.
CODEC Type Selection
- allows selection of short
(default) or long frame sync for the CODEC interface.
When two CODECs are connected to the D6571E, the
HOST can select the input or the output CODEC for
each function. If CODEC0 is connected to the
telephone line and CODEC1 is connected to the
microphone and speaker, the HOST can select to record
or play through each one of the CODECs. CODEC
Selection enables the following options with a 2-CODEC
configuration.
INPUT CODEC - allows selecting the input data streams
from CODEC0 and CODEC1.
CODEC INPUT
Bit 2
0
Input
(default)
Input through CODEC1
through
CODEC0
1
OUTPUT CODEC
-
allows selecting the CODEC output
between CODEC0 or CODEC1 (or both).
CODEC OUTPUT
Bit 4
Bit 3
0
0
(Default mode.) Output data stream in
the
Generation,
Prompt modes is directed to CODEC0
(via pin TX0). In the SpeakerPhone
mode signal to the telephone line is
directed to CODEC0, signal to the
speaker to CODEC1 (via pin TX1).
This
SpeakerPhone operation.
0
1
Output data is directed in all modes only
to CODEC1 (via pin TX1).
1
0
Output data is directed in all modes only
to CODEC0 (via pin TX0).
CODEC
Record,
Playback,
Monitor,
Tone
Voice
Line
mode
should
be
used
for
1
1
Data is directed in all modes to both
CODECs.
A RESET signal will set all codec configurations to the
default values.
Codec Selection command has the same performance in
case of “cold” and “warm” start.
5) Codec Loopback (Test Mode = 0110)
Activates Codec loopback. This mode is available in
case of “cold start.”
6) Algorithm Configuration (Test Mode = 0111
)
Submode 000
= DTMF Configuration
This command configures DTMF detector (sub mode 0)
to report detection of 12 digits (0-9, *, #) or 16 digits (0-9,
*, #, A, B, C, D). By default the D6571E is in 12 digit
mode.
Submode 001
= CAS Configuration
Allows to change threshold levels of the CAS detector
Submode 010
= AGC Configuration
This command activates AGC. AGC, when activated, is
functional in the Record mode. Main parameters of the
AGC are programmable and can be defined by the AGC
Configuration command. By default AGC is disabled.
Programmable AGC Parameters
The following Parameters can be programmed by Host
using AGC Configuration command.
Optimum Level Eopt -
desired output level after AGC
operation. For input signals of Eopt level the AGC will
set gain = 1. Input signals greater that Eopt will be
attenuated. Input signals smaller than Eopt will be
amplified.
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