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1.5 Address frames
C141-C013 61
An SSP INITIATOR PORT bit set to one specifies that an SSP INIT port is
present. An SSP INITIATOR PORT bit set to zero specifies that an SSP INIT port
is not present. Expander devices shall set the SSP INITIATOR PORT bit to zero.
An SSP TARGET PORT bit set to one specifies that an SSP TARG port is
present. An SSP TARGET PORT bit set to zero specifies that an SSP TARG port
is not present. Expander devices shall set the SSP TARGET PORT bit to zero.
For SAS ports, the SAS ADDRESS field specifies the port identifier of the SAS
port transmitting the IDENTIFY address frame. For expander ports, the SAS
ADDRESS field specifies the device name of the expander device transmitting the
IDENTIFY address frame.
The PHY IDENTIFIER field specifies the phy identifier of the phy transmitting
the IDENTIFY address frame.
A wide port shall set the DEVICE TYPE field, SSP INITIATOR PORT bit, STP
INITIATOR PORT bit, SMP INITIATOR PORT bit, SSP TARGET PORT bit,
STP TARGET PORT bit, and SMP TARGET PORT bit to the same set of values
on each phy in the wide port. Recipient ports need not check the consistency of
these fields across phys.
The contents of the IDENTIFY address frame sent by a drive are as follows:
a) ADDRESS FRAME TYPE: 0h
b) DEVICE TYPE: 001b
c) SSP INITIATOR PORT bit: 0b
d) STP INITIATOR PORT bit: 0b
e) SMP INITIATOR PORT bit: 0b
f) SSP TARGET PORT bit: 1b
g) STP TARGET PORT bit: 0b
h) SMP TARGET PORT bit: 0h
i) SAS ADDRESS: Refer to the Section 1.2.1, "SAS address."
j) PHY IDENTIFIER: port A (0h)/port B (1h)
k) Reserved: 0h