Datasheet

SHARC Audio EZ-Extender Manual 2-11
SHARC Audio EZ-Extender Hardware Reference
Audio In4 Right Selection Switch (SW14)
The audio selection switch (SW14) connects the right channel of the In4
line, connected to the AD1939’s ADC8 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 AD1939B (codec B). To use the standard, off the shelf
DB25 connector to XLR cables, change the switch to the differential set-
ting; see Table 2-8. See also “Differential In/Out Connectors (P1–5)” on
page 2-18.
Table 2-7. Audio In4 Left Selection Switch (SW13)
SW13 Position Single-Ended Mode
RCA IN (Default)
Differential Mode
DB25 IN (P1)
SW13.1 ON OFF
SW13.2 OFF ON
SW13.3 ON OFF
SW13.4 OFF ON
SW13.5 ON OFF
SW13.6 OFF ON
Table 2-8. Audio In4 Right Selection Switch (SW14)
SW14 Position Single-Ended Mode
RCA IN (Default)
Differential Mode
DB25 IN (P1)
SW14.1 ON OFF
SW14.2 OFF ON
SW14.3 ON OFF
SW14.4 OFF ON
SW14.5 ON OFF
SW14.6 OFF ON