Datasheet

Miscellaneous Functions
3-11
Setup Guide
The Mute function is controlled using the MUTE element of switch SW7, or by
the MUTE bit of Control Register 1 when using the SRC4193. This function
employs a soft mute technique, which provides for artifact–free muting of the
SRC419x output port. Table 3–11 summarizes Mute function operation.
Table 3–11. Mute Function Configuration
MUTE Soft Mute Function
LO Disabled
HI Enabled
A Direct Down–Sampling option is available only when using the SRC4193.
It is accessed using the DFLT bit in Control Register 2. Refer to the
SRC4192/4193 data sheet for more details regarding the use of this mode.
The DIT4192 digital audio transmitter supports Single Channel Double Fre-
quency operation, also referred to as Mono mode in the DIT4192 data sheet.
In this mode, the DIT4192 output frame rate is one half the input SYNC clock
rate, with two consecutive samples of a single channel replacing the Left and
Right channel samples of the normal Stereo mode transmission. This mode
is useful when testing 176.4kHz and 192kHz sampling rates on an Audio Preci-
sion System Two Cascade/Cascade Plus Dual Domain system, configured in
Dual Channel mode. Only one channel at a time may be tested in this fashion.
The MONO and MDAT elements of switch SW9 are utilized to configure Mono
mode operation. Table 3–12 summarizes the MONO and MDAT options.
Table 3–12.DIT4192 Mono Mode Configuration
Mono Stereo/Mono Mode Operation
LO Stereo
HI Mono
MDAT Audio/Channel Status Data Selection
LO Left Channel Audio Data / Channel A
CS Data
HI Right Channel Audio Data / Channel B
CS Data