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In response, the TigerSHARC processor asserts
execute its transactions. After the host completes the transactions and
relinquishes the bus, the TigerSHARC processor performs the read trans-
actions that were suspended when
!
The backoff mechanism may not be used to stop write transactions
to host.
The backoff mechanism can only be active when the TigerSHARC proces-
sor has reached the data cycle of transactions targeted to the host; this
occurs after the host has deasserted the
to be accessed by the TigerSHARC processor in slow protocol with zero
wait states, the backoff mechanism cannot be used because in this case the
signal cannot be asserted for the transaction.
ACK
Backoff also overrides a bus lock. If the host can access resources that are
protected by a semaphore, there should be a system solution for the sema-
phore. One possible solution is to implement semaphores on the bridge in
a way that does not require bus lock. If the semaphore is set when read and
the read data is the previous value, there is no need for bus lock on the
semaphore access. The host interface can be notified of a bus lock by the
pin.
BUSLOCK
ADSP-TS101 TigerSHARC Processor
Hardware Reference
, allowing the host to
HBG
was asserted.
BOFF
pin. If the host is programmed
ACK
Cluster Bus
5-51
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