ML7033 datasheet(28/52 Pages) LAPIS

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FEDL7033-04

ML7033

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CR2 (Pulse metering tone generator control)

CR2

PMG2

FRQ

PMG2

LV1

PMG2

LV0

PMG2

TOUT2

PMG1

FRQ

PMG1

LV1

PMG1

LV0

PMG1

TOUT1

default

… Pulse metering tone frequency select for CH2

0 : 12 kHz

1 : 16 kHz

B6, B5

… Pulse metering tone level setting for CH2

(B6, B5)

(0, 0) = OFF

(0, 1) = 0.5 Vpp

(1, 0) = 1.0 Vpp

(1, 1) = 1.5 Vpp

The level of the pulse metering tone, as shown in Figure 11, reaches the assigned level in

10 ms and gradually fades out over 10 ms.

The ramp-up and ramp-down times also apply when a tone is cancelled by writing (0,0)

into these register bits. Once the register bits are set, the tone begins to fade out and

completely fades out after 10 ms. In addition, subsequent writes to these bits are prohibited

for 10 ms.

Figure 11

Pulse Metering Tone Waveform

… Pulse metering tone output pin select for CH2

0 : AOUT2 pin (added to voice signals)

1 : TOUT2 pin

… Pulse metering tone frequency select for CH2

0 : 12 kHz

1 : 16 kHz

B2, B1

… Pulse metering tone level setting for CH1

(B2, B1)

(0,0) = OFF

(0, 1) = 0.5 Vpp

(1, 0) = 1.0 Vpp

(1, 1) = 1.5 Vpp

The level of the pulse metering tone, as shown in Figure 11, reaches the assigned level in

10 ms and gradually fades over 10 ms.

The ramp-up and ramp-down times also apply when a tone is cancelled by writing (0,0)

into these register bits. In this case the tone fades out after 10 ms. In addition, subsequent

writes to these bits are prohibited for 10 ms.

… Pulse metering tone frequency select for CH1

0 : 12 kHz

1 : 16 kHz

Ramp up time=10ms

Ramp down time=10ms

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