Datasheet

SHARC Audio EZ-Extender Manual 2-7
SHARC Audio EZ-Extender Hardware Reference
Audio In1 Right Selection Switch (SW8)
The audio selection switch (SW8) connects the right channel of the In1
line, connected to the AD1939’s ADC2 circuit, to either the single-ended
RCA connectors or the differential DB25 connector. By default, the
switch is set up to use the RCA connectors for audio in. The switch circuit
is connected to AD1939A (codec A). To use the standard, off the shelf
DB25 connector to XLR cables, change the switch to the differential set-
ting; see Table 2-2. See also “Differential In/Out Connectors (P1–5)” on
page 2-18.
SW7.5 ON OFF
SW7.6 OFF ON
Table 2-2. Audio In1 Right Selection Switch (SW8)
SW8 Position Single-Ended Mode
RCA IN (Default)
Differential Mode
DB25 IN (P1)
SW8.1 ON OFF
SW8.2 OFF ON
SW8.3 ON OFF
SW8.4 OFF ON
SW8.5 ON OFF
SW8.6 OFF ON
Table 2-1. Audio In1 Left Selection Switch (SW7) (Cont’d)
SW7 Position Single-Ended Mode
RCA IN (Default)
Differential Mode
DB25 IN (P1)