Teledyne Sierra M6-2 User Manual page 482

Teledyne LeCroy
Wait Command Name
WF_NAK_RESERVED_2
WF_CREDIT_AVAIL
WF_CREDIT_BLOCKED_RECEIVED
WF_CREDIT_BLOCKED
WF_RRDY_NORMAL
WF_RRDY_RESERVED_0
WF_RRDY_RESERVED_1
WF_BREAK
WF_CLOSE_CLEAR_AFFILIATION
WF_CLOSE_NORMAL
WF_CLOSE_RESERVED_0
WF_CLOSE_RESERVED_1
WF_DONE_ACK_NAK_TIMEOUT
480
Sierra Trainer Generation Commands
Description
primitive
Credit Available
This function is based on a 10‐bit
counter whose value can range from ‐
512 to +511 (twos‐complement). This
counter is cleared by sending or
receiving an OPEN_ACCEPT primitive,
or by execution of a
CLEAR_CREDIT_AVAIL command in the
script.
This counter is incremented by
receiving any SAS RRDY primitive and
is decremented by sending SAS SOF.
The wait_for command will wait for
this counter to have a positive value
between +1 and +511. This wait_for
condition is intended to be used
before sending a SAS frame within a
connection.
ClEAR_CREDIT_AVAIL clears this credit
function.
CreditBlocked Received
This function is based on a flip‐flop
which is cleared by sending or
receiving an OPEN_ACCEPT primitive.
It is set by receiving a
CREDIT_BLOCKED primitive. It is
intended to be used in conjunction
with wf_credit_avail to prevent script
hangs in those cases where there is
not going to be any more credit
granted.
primitive
primitive
primitive
primitive
primitive
primitive
primitive
primitive
primitive
primitive
Sierra M6‐2 SAS/SATA Protocol Analyzer User Manual