Manual

Table Of Contents

36 DS693F1

CS3318

7.8 Freeze Control - Address 0Fh

7.8.1 Freeze (Bit 7)

Default = 0

Function:

When the Freeze bit is set, the Freeze function allows modifications to the control port registers with-

out changes taking effect until Freeze bit is cleared. To make multiple changes in the Control Port

registers take effect simultaneously, set the Freeze bit, make all register changes, then clear the

Freeze bit.

7.9 Master 1 Mask - Address 10h

Each bit in this register serves as a Master 1 mask for its corresponding channel.

If a mask bit is set to ‘1’, the corresponding channel is unmasked, meaning that it will be affected by the

Master 1 volume and muting controls.

If a mask bit is set to ‘0’, the corresponding channel is masked, meaning that it will not be affected by the

Master 1 volume and muting controls.

This register defaults to FFh (all channels unmasked).

7.10 Master 1 Volume - Address 11h

7.10.1 Master 1 Volume Control (Bits 7:0)

Default = 11010010

Function:

The Master 1 volume control register allows the user to simultaneously gain or attenuate all un-

masked channels in 0.5 dB increments. The volume changes are implemented as dictated by the ZC-

Mode[1:0] and TimeOut[2:0] bits in the Device Config 2 register (see “Device Configuration 2 -

Address 0Ch” on page 34).

The value of the Master 1 volume control register is mapped to the desired 0.5 dB step Master 1 vol-

ume setting by the following equation:

In the equation above, “Desired Volume Setting in dB” is determined by rounding the desired ¼ dB

resolution volume setting down to ½ dB resolution.

It should be noted that input values outside the CS3318’s analog range of +22 dB to -96 dB are valid,

however, the volume of each channel will be limited to the CS3318’s analog range (see “Volume Lim-

its” on page 20).

See Table 5 on page 31 for example register settings.

76543210

Reserved Reserved Reserved Reserved Reserved Reserved Reserved Freeze

76543210

M1_Ch8M M1_Ch7M M1_Ch6M M1_Ch5M M1_Ch4M M1_Ch3M M1_Ch2M M1_Ch1M

76543210

M1_Vol7 M1_Vol6 M1_Vol5 M1_Vol4 M1_Vol3 M1_Vol2 M1_Vol1 M1_Vol0