¡ Semiconductor

MSM7717-01/02/03

8/19

SG

Signal ground voltage output.

The output voltage is 1/2 of the power supply voltage.

The output drive current capability is

±200 mA.

This pin provides the SG level for CODEC peripherals.

This output voltage level is undefined during power-saving or power-down mode.

SGC

Used to generate the signal ground voltage level by connecting a bypass capacitor.

Connect a 0.1 mF capacitor with excellent high frequency characteristics between the AG pin and

the SGC pin.

ALAW

Control signal input of the companding law selection.

Only the MSM7717-01GS-K/7717-01MS-K has this pin. The CODEC will operate in the m-law

when this pin is at a logic "0" level and the CODEC will has this pin operate in the A-law when

this pin is at a logic "1" level. The CODEC operates in the m-law if the pin is left open, since the

pin is internally pulled down.