Datasheet

S/PDIF Interface
1-14 ADSP-21489 EZ-Board Evaluation System Manual
an LED (
LED11) for a visual alarm if the temp exceeds the limit. The ther-
mal limit flag and ADM1032 IRQ connect to the flag pins of the
processor, but are nonessential for temperature monitoring. Conse-
quently, the SW13 switch positions that control the flag pins are OFF by
default.
See “DPI [1–8] Enable Switch (SW3)” on page 2-9 and “External Port
Enable Switch (SW13)” on page 2-12 for more information.
Example programs are included in the EZ-Board installation directory to
demonstrate sensor operations.
S/PDIF Interface
The ADSP-21489 processor has a built-in S/PDIF transmitter and
receiver for digital audio applications. The EZ-Board supports the S/PDIF
interface and brings out both the transmitter and receiver via RCA con-
nectors J6 and J7, respectively. The S/PDIF’s in and out pins are
connected by DAI pins via switches SW1 and SW7:
• DAI pin 1 (DAI_P1) as SPDIF_OUT
• DAI pin 18 (DPI_P18) as SPDIF_IN
SW1
and SW7 can be turned OFF to disconnect the DAI pins from the RCA
connectors if the pins are used on the expansion II interface. See “DAI [1–
8] Enable Switch (SW1)” on page 2-8 and “DAI [17–20] Enable Switch
(SW7)” on page 2-11 for more information.