msm7584c Oki Semiconductor, msm7584c Datasheet - Page 14

• Manufacturer Part Number: msm7584c
• Description: Pi /4 Shift Qpsk Modem/adpcm Codec
• Manufacturer: Oki Semiconductor

¡ Semiconductor
PDN0, PDN1, PDN2
Various power down controls.
PDN0 controls the standby mode/communication mode; PDN1 controls the modulator; PDN2
controls the demodulator. Refer to Table 1 for details.
Standby
Mode
Commu-
nication
Mode
PDN0 PDN2 PDN1
0
0
1
1
1
1
0/1
0/1
Table 1 Description of Modem Power Down Control
0
0
1
1
0
1
0
1
0
1
Entire system is powered down. The control register is not reset.
Modulator unit is powered off. (VREF and PLL also powered off.)
Demodulator unit is powered on.
Modulator unit is powered off. (VREF and PLL are powered on.)
I and Q outputs are in a high impedance state.
Only the demodulator clock regenerator unit is powered on.
Modulator unit is powered off. (VREF and PLL are powered on.)
I and Q outputs are in a high impedance state.
Demodulator unit is powered on.
Modulator unit is powered on.
Only the demodulator clock regenerator unit is powered on.
Modulator unit is powered on.
Demodulator unit is powered on.
Operation State
MSM7584C
Mode Name
Mode D
Mode A
Mode B
Mode C
Mode E
Mode F
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