msm7586-01 Oki Semiconductor, msm7586-01 Datasheet - Page 7

• Manufacturer Part Number: msm7586-01
• Description: Shift Qpsk Modem/adpcm Codec
• Manufacturer: Oki Semiconductor

¡ Semiconductor
PDN0, PDN1, PDN2
Various power down control.
PDN0 controls the standby mode/communication mode; PDN1 controls the modulator unit;
and PDN2 controls the demodulator unit. Refer to Table 1 for details.
The control register reset input width should be 200ns or more.
Standby
Mode
Commu-
nication
Mode
PDN0 PDN2 PDN1
0
0
0
1
1
1
1
Table 1: Description of Modem Power Down Control
0/1
0
1
0
0
1
1
1
0
0
0
1
0
1
Entire system is powered down. The control register is reset.
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 on.
Only the demodulator clock regenerator unit is powered on.
Modulator unit is powered off. (VREF and PLL are powered off.)
I and Q outputs are in a high impedance state.
Demodulator unit is powered on.
Modulator unit is powered on.
Demodulator unit is powered on.
Operation State
MSM7586-01/03
Mode Name
Mode D
Mode G
Mode A
Mode B
Mode C
Mode E
Mode F
7/42