ml7033 Oki Semiconductor, ml7033 Datasheet - Page 28

• Manufacturer Part Number: ml7033
• Description: Dual-channel Line Card Codec
• Manufacturer: Oki Semiconductor

CR2 (Pulse metering tone generator control)
B7
B6, B5
B4
B3
B2, B1
B0
1 Semiconductor
default
CR2
PMG2
… Pulse metering tone frequency select for CH2
… Pulse metering tone level setting for CH2
… Pulse metering tone output pin select for CH2
… Pulse metering tone frequency select for CH2
… Pulse metering tone level setting for CH1
… Pulse metering tone frequency select for CH1
FRQ
B7
0
Ramp up time=10ms
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.
0 : AOUT2 pin (added to voice signals)
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.
(B6, B5) (0, 0) = OFF
(B2, B1) (0,0) = OFF
PMG2
LV1
B6
Figure 11 Pulse Metering Tone Waveform
0
(0, 1) = 0.5 Vpp
(1, 0) = 1.0 Vpp
(1, 1) = 1.5 Vpp
(0, 1) = 0.5 Vpp
(1, 0) = 1.0 Vpp
(1, 1) = 1.5 Vpp
PMG2
LV0
B5
0
TOUT2
PMG2
B4
0
1 : TOUT2 pin
PMG1
FRQ
B3
0
0 : 12 kHz
0 : 12 kHz
0 : 12 kHz
Ramp down time=10ms
PMG1
LV1
B2
0
1 : 16 kHz
1 : 16 kHz
1 : 16 kHz
PMG1
LV0
B1
0
FEDL7033-02
TOUT1
PMG1
ML7033
B0
0
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