Rules For Sru Connections; Making Sru Connections - Analog Devices SHARC ADSP-2136 Series Hardware Reference Manual

DAI Peripherals

Rules for SRU Connections

There are two rules which apply to all routing:
1. Each input must connect to exactly one output
2. An output can feed any number of inputs
As an example:
•
SPORT0_CLK_O
•
SPORT0_CLK_O
•
SPORT0_CLK_O

Inputs may only be connected to outputs.

Making SRU Connections

In this section, three types of SRU routing are demonstrated.
In the first example, the SRU interconnects peripheral nodes internally
(among a register group), as in
build an internal feedback. Note this junction does not affect the DAI pin
buffers.
The second example uses the DAI pin buffer for signaling the clock
off-chip, additionally a feedback to another SPORT peripheral is created
within a DAI pin buffer. In this case, the same above example can be
shown as:
SPORT1_CLK_O
DAI_PB04_O
SPORT1_CLK_PBEN_O
This example requires three routs since the DAI pin buffer needs to be
enabled. If it is not, the feedback junction is not effective.
5-16
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is routed to
SPORT1_CLK_I
is routed to
SPORT2_CLK_I
is routed to
SPORT3_CLK_I
SPORT1_CLK_O
is routed to
DAI_PB04_I
is routed to
SPORT0_CLK_I
is routed to
ADSP-2136x SHARC Processor Hardware Reference
for the ADSP-21362/3/4/5/6 Processors
is routed to
PBEN04_I
to
SPORT0_CLK_I