msm7586-01 Oki Semiconductor, msm7586-01 Datasheet - Page 6

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

¡ Semiconductor
MSM7586-01/03
BSTO
BSTO is the modulator side burst window output.
The burst position of the I and Q baseband modulator output is output.
I+, I–
Quadrature modulation signal I Component differential analog output.
Their output levels are 500 mV
(when TXD = "0": 360 mV
typ.) with 1.6 Vdc as the center
pp
pp
value. The output pin load conditions are: R 10 kW, C £ 20 pF. The gain of these pins can be
adjusted using the control register CRM1 - B7 to B4, and the offset voltage at the I– pin can be
adjusted using CRM3 - B7 to B3.
Q+, Q–
Quadrature modulation signal Q component differential analog outputs.
Their output levels are 500 mV
(when TXD = "0": 360 mV
typ.) with 1.6 Vdc as the center
pp
pp
value. The output pin load conditions are: R 10 kW, C £ 20 pF. The gain of these pins can be
adjusted using the control register CRM1 - B3 to B0, and the offset voltage at the Q– pin can be
adjusted by using CRM4 - B7 to B3.
SGM
Internal reference voltage output.
The output voltage value is approximately 2.0 V. Insert a bypass capacitor between this pin and
the AGM pin. During power down, this output is at 0 V.
The external SG voltage if necessary should be used via a buffer.
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