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參數(shù)資料
| 型號： | NSAM265SRA |
| 廠商： | National Semiconductor Corporation |
| 英文描述： | CompactSPEECH Digital Speech Processors |
| 中文描述： | CompactSPEECH數(shù)字語音處理器 |
| 文件頁數(shù)： | 25/58頁 |
| 文件大?。?/td> | 712K |
| 代理商： | NSAM265SRA |
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3.0 Command Set
(Continued)
15
14
13
12
11
10
9
8
7
6
5
4
3
0
EVD
DTMF
EVD
RESET
EVD
VOX
Reserved
EVD
MEMLOW
EVD
DIALTONE BUSY
EVD
EVD
ERROR
EVD
MEMFULL
EVD
NORMALDDTMFDDTMFD
END
END
EVD
EVD
DIGIT
GNM
NSAM265SR
&
Get Number of MessagestagDref tagDmask
NSAM265SF
&
Returns the number of messages whose message tags
match the tagDref parameter. Only bits set in tagDmask
are compared i.e., a match is considered successful if:
message tag andtagDmask
e
tagDref andtagDmask
where and is a bitwise AND operation.
The tagDref and tagDmask parameters are each two
bytes; the return value is also 2-byte long.
For example, if tagDref
e
42
16
, and tagDmask
e
3F
16
,
the number of existing old messages whose user-defined
tag is 2 is returned. See Section 1.5 for a description of
message tag encoding. IftagDmask
e
0, the total number
of all existing messages is returned, regardless of thetagD
ref value.
GSW
NSAM265SR
&
Get Status Word
NSAM265SF
&
Returns the 2-byte status word.
The Status Word
The CompactSPEECH processor has a 16-bit status word
to indicate events that occur during normal operation. The
CompactSPEECH sets the MWRQST signal to active (low),
to indicate a change in the status word. This signal remains
active until the CompactSPEECH receives a GSW com-
mand.
The status word is cleared during reset and by the GSW
command.
The bits in the status word are used as follows:
EVDDTMFDDIGIT
DTMF digit. A value indicating a detected DTMF digit. (See
GT command.)
EVDDTMFDEND
1
e
Ended detection of a DTMF tone. The detected digit is
held in EVDDTMFDDIGlT.
EVDNORMALDEND
1
e
Normal completion of operation, e.g., end of message
playback, end of garbage collection, etc.
EVDMEMFULL
1
e
Memory is full.
EVDERROR
1
e
Error detected in the last command. You can use the
GEW command to return the error code.
EVDBUSY
1
e
Busy tone detected. Use this indicator for call progress
and line disconnection.
EVDDIALTONE
1
e
Dial tone detected. Use this indicator for call progress
and line disconnection.
EVDMEMLOW
NSAM265SF only. 1
e
Memory is almost full (i.e., 20 sec-
onds recording time remain, assuming no silence, on the
one-before-last FLASH block) when working in memory in-
tensive mode.
EVDVOX
1
e
a period of silence (no energy) was detected on the
telephone line during recording.
EVDRESET
When the CompactSPEECH completes its power-up se-
quence and enters the RESET state, this bit is set to 1 and
the MWRQST signal is activated (set low). Normally, this bit
changes to 0 after performing the INIT command. If this bit
is set during normal opertion of CompactSPEECH it indi-
cates an internal CompactSPEECH error. The microcontrol-
ler can recover from such an error by reinitializing the sys-
tem.
EVDDTMF
1
e
Started detection of a DTMF tone.
GT
NSAM265SR
&
Generate Tonetone
NSAM265SF
&
Generates the tone specified by the 1-bytetone parameter,
until an S command is received.
Specify the tone by setting the bits of tone as follows:
Bit 0
1
Bits 1–4
DTMF code
Where the DTMF code is encoded as follows:
Value (Hex)
DTMF Digit
0 to 9
0 to 9
A
A
*
Y
B
C
D
B
E
C
F
D
Bits 5–7
0
To generate a single-frequency tone encode the bits as fol-
lows:
Bit 0
0
Bits 1–5
3–20.
The value in bits 1–5 is multiplied by 100 to
generate
the
required
through 2000 Hz)
frequency
(300
Hz
Bits 6, 7
0
CompactSPEECH does not check the validity of the tone
specification. Invalid specifications yields unpredictable re-
sults.
25
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