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)字電話應答機與快閃記憶體介面
文件頁數(shù): 77/117頁
文件大小: 551K
代理商: D6571E
D6571E Data Sheet
DS6571E.2
DSP GROUP, INC., 3120 SCOTT BOULEVARD
SANTA CLARA, CA 95054 PH: 408 986-4300 FAX: 408 986-4490
75
Command (C2):
1110
(15 - 12) (11 - 9) (8 - 0)
MODE: = 0000: Get SpeakerPhone Status
= 0001:
Get Line Monitor Status
= 001:
Set SpeakerPhone Parameters
= 010:
Set SpeakerPhone Configuration
= 011:
Set SpeakerPhone Configuration 2
= 100:
Tone Generation
= 101:
Set SpeakerPhone Parameters 2
= 110:
Reserved
= 111:
Reserved
MODE: = 0000: (Get SpeakerPhone Status)
Command:
1110
0000
MODE
PARAMETERS
0 0 0 0 0 0 0 0
(15-12)
Status:
(11-8)
(7 - 0)
1110
Direction
0
Loop Attenuation
(15-12)
Loop Attenuation:
Direction:
(11-8)
(7-4)
(3)
(2-0)
This indicates the amount of loop attenuation currently in use.
= 000
0 dB
= 001
-4 dB
= 010
-8 dB
= 011
-12 dB
= 100
-16 dB
= 101
-20 dB
= 110
-24 dB
= 111
-28 dB
This indicates which direction (microphone/speaker) is considered active by the DSP
SpeakerPhone control logic. This is a 4 bit field used to represent the number range from +7
to -8. The most positive values indicate that the signal from the microphone side is dominant
(microphone speaking). The most negative values indicate that the signal from the line side is
dominant (telephone line speaking). Values in the center of the range can either indicate a
transition from one side to the other, or if the value stays at approximately zero, indicates that
neither side is talking.
= 0111
= 0110
= 0101 +5
= 0100
= 0011
+7
+6
Microphone side is speaking.
+4
+3
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