NSAM266SA Datasheet, PDF (37/52 Pages) National Semiconductor (TI) – NSAM266SA CompactSPEECHTM Digital Speech Processor with Serial Flash Interface

2 0 Software (Continued)
Bits 5 – 7 0
To generate a single-frequency tone encode
the bits as follows
Bit 0
0
Bits 1 – 5 3– 30
The value in bits 1–5 is multiplied by 100 to
generate
the
required
frequency
(300 Hz–3000 Hz)
Bits 6 7 0
The CompactSPEECH does not check for the
validity of the tone specification Invalid specifi-
cation yields unpredictable results
Example
GT 0D20
Microcontroller 0D 20
Byte sequence
CompactSPEECH 0D 20
Description
Generate a single-frequency 1600 Hz
tone
GTD
Get Time and Day time day option
Returns the time and day as a 2-byte value time day
option may be one of the following
0 Get the system time and day
1 Get the current message time-and-day stamp
Any other time day option returns the time-and-day
stamp of the current message
Time of day is encoded as follows
Bits 0 – 2 Day of the week (1 through 7)
Bits 3 – 7 Hour of the day (0 through 23)
Bits 8 – 13 Minute of the hour (0 through 59)
Bits 14 – 15 00 The time was not set before the current
message was recorded
11 The time was set i e the SETD (Set Time
of Day) command was executed
Note If the current message is undefined and time day option is 1 an
ERR INVALID error is reported
Example
GTD 1
Microcontroller 0E 01 AA AA
Byte sequence
CompactSPEECH 0E 01 E8 29
Description
Get the current message time-and-day
stamp
The CompactSPEECH responds that the
message was created on the first day of
the week at 5 40 AM The return value
also indicates that the SETD command
was used to set the system time and day
before the message was recorded
Note If the SAS command is used to announce the
time-and-day stamp ‘‘Monday’’ is announced
as the first day of the week For an external
vocabulary the announcement depends on
the vocabulary definition
(See the IVS User’s Manual for more
details )
GTM
Get Tagged Message tag ref tag mask dir
Selects the current message according to instructions in
dir to be the first n^th next or n^th previous message which
complies with the equation
message tag and tag mask e tag ref and tag mask
where and is a bitwise AND operation
dir is one of the following
0 Selects the first (oldest) message
128 Selects the last (newest) message
n Selects the n^th next message starting from the cur-
rent message
-n Selects the n^th previous message starting from the
current message
Note To select the nth message with a given tag to be the current mes-
sage you must first select the first message that complies with the
above equation and then issue another GTM command with n b 1
as a parameter to skip to the nth message
If a message is found it becomes the current message and 1
(TRUE) is returned If no message is found the current message
remains unchanged and 0 (FALSE) is returned
If dir is not 0 and the current message is undefined the return
value is unpredictable After the command execution the current
message may either remain undefined or change to any existing
message The only exception is when the GTM command is exe-
cuted just after the DM command (See the DM command descrip-
tion for further detail )
To access the nth message when n l 127 a sequence of GTM
commands is required
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