KX1400EW Keterex, KX1400EW Datasheet - Page 23

• Manufacturer Part Number: KX1400EW
• Description: Audio D/A Converter ICs KX1400 Audio Playback IC
• Manufacturer: Keterex

Specifications of KX1400EW

• Resolution: 12 bit
• Operating Supply Voltage: 2.7 V to 5.5 V
• Operating Temperature Range: - 40 C to + 85 C
• Maximum Power Dissipation: 120 mW
• Mounting Style: SMD/SMT
• Number Of Dac Outputs: 2
• Power Consumption: 320 mW
• Supply Current: 50 mA
• Thd Plus Noise: 40 dB
• Package / Case: SOIC-20
• Lead Free Status / RoHS Status: Lead free / RoHS Compliant

8.3. Set Duration
Description: The Set Duration command is used to specify the length of time the tone generator plays
8.4. Play Tone
Description: The Play Tone command instructs the tone generator to synthesize the appropriate audio
Encoding:
Encoding:
Options: Bit 4: Stand-by
Options: None
Length: 8 Bits
Length: 16 Bits
Type: Control
Type: Audio
Data: None
Data: Bits 15-4: Duration
Setting the Stand-by option to logic one executes a mute operation and then puts the
KX1400 into its low-power stand-by state. The stand-by state is exited at the next assertion
of the
device reset.
tones in response to Play Tone commands. At the end of the duration period, any pending
audio command will execute. Otherwise, the tone generator will halt and the speaker driver
output will return to a DC level (go silent).
After reset, the default duration value is 000h which corresponds to an infinite duration
(tones will play until a Reset, Stop or new audio command is issued). Once configured
using the Set Duration command, the duration period remains in effect for all subsequent
Play Tone commands or until a new duration is set.
The length of time in milliseconds the tone generator plays tones in response to Play Tone
commands. A value of 000h corresponds to an infinite duration (tones will play until a
Reset, Stop or new audio command is issued).
data and send it to the audio processor to create a tone at the specified frequency. The
length of time the tone is played depends on the current duration setting. (See the Set
Duration command for more information.)
Frequency Index
CS
¯¯
Bits 15-4
Bits 15-4
Duration
signal (i.e. at the beginning of the next MCU interface transmission) or after a
Bits 3-0
Bits 1-0
0010
11
KX1400 Audio Playback IC
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