Includes a voice switch that can turn the governor on or off. Includes a power switch circuit that can turn all the IC function blocks on or off from a photosensor signal. During record, the IC can automatically turn the governor on or off according to the microphone input level, and furthermore, the governor on/off level can be continuously adjusted from an external control knob. (The control used for volume adjustment during playback.) Continuously variable microphone monitor level. Includes a drive pin for an LED that lights only when the governor is on in record mode.
Chip Select (CS) When CS is HIGH, the X25043/45 is deselected and the SO output pin is at high impedance and, unless an internal write operation is underway, the X25043/45 will be in the standby power mode. CS LOW enables the X25043/45, placing itin the active power mode.lt should be noted that after power-up, a HIGH to LOW transition on CS is required prior to the start of any operation.
| PARAMETER | SYMBOL | TEST CONDITIONS | MIN | TYP | MAX | UNIT |
| ADC Circuit Specifications (AVDD = 3.3V) 48kHz sampling |
| SNR A-weighted (Note l) | | | | 82 | | dB |
| ADC input for full scale output | | VREF= 1.65V | | 0.7 | | Vrms |
| THD | | -9dBV input | | 80 | | dB |
| Frequency response | | | 20 | | 19 200 | Hz |
| Transition band | | | 19,200 | | 28 800 | Hz |
| Stop band | | | 28,800 | | | Hz |
| Stop band rejection | | | -74 | | | dB |
| PSRR | | 20 t0 20kHz | | 40 | | dB |
| Mixer Circuit Specifications (AVDD = 3.3V) 48kHz sampling |
| SNR CD path A-weighted (Note l) | | | | 97 | | dB |
| SNR Other paths A-weighted (Note l) | | | | 92 | | dB |
| Maximum input voltage | | | | 0.7 | | Vrms |
| Maximum output voltage on LINEOUT | | | | 0.7 | | Vrms |
| THD | | -3dBV input | | 90 | | dB |
| Frequency response (+/-1dB) | | | 20 | | 20 000 | Hz |
| Input impedance (CD inputs) | | At any gain | | 15 | | kohm |
| Input impedance (other Mixer | | At max gain | | 20 | | kohm |
| inputs) | At Odb gain | | 100 | | kohm |
| Input impedance MIC inputs | | At max gain | | 80 | | kohm |
| At Odb gain | | 15 | | kohm |
| PSRR | | 20 t0 20kHz | | 40 | | dB |
| Clock Frequency Range |
| Crystal clock | | | | 24.576 | | MHz |
| BIT_CLK frequency | | | | 12.288 | | MHz |
| SYNC frequency | | | | 48 0 | | kHz |
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