Specifications

SATA-IO Confidential 33
If a device claims support host interface power management (Word 76 bit 9 set to one in IDENTIFY DEVICE or
IDENTIFY PACKET DEVICE data), upon receipt of a PMREQ_S the following are valid device responses:
• respond with between 4 and 16 PMACK primitives and place the device Phy layer into the slumber state
• respond with PMNAK until SYNC is received from the host, no device Phy layer power transition shall
occur.
If a host claims support for device interface power management, upon receipt of a PMREQ_S the following are valid
device responses:
• respond with between 4 and 16 PMACK primitives and place the host Phy layer into the slumber state
• respond with PMNAK until SYNC is received from the device, no host Phy layer power transition shall
occur.
The above responses relative to a host are also required if a host supports device initiated power management.
• Setup bus analyzer (or scope) for tracing of bus activity & begin tracing
Measurement Requirements (Device)
• Check Word 76 bit 9 in IDENTIFY DEVICE or IDENTIFY PACKET DEVICE (set to one)
• If the above is true, then run the following test
o Issue PMREQ_S and receive device response
• This requirement must be verified on 10 total sequences
• Setup bus analyzer (or scope) for tracing of bus activity & begin tracing
Measurement Requirements (Host)
• Issue PMREQ_S and receive host response
• This requirement must be verified on 10 total sequences
• Verify that PMNAK or between 4 and 16 total PMACKs are received (use trace to verify device response)
Pass/Fail Criteria
• Since a single pass/fail result is reported, it must be verified that all 10 test sequences were a pass for the
final result to be a PASS for this test requirement.
2.5.7. IPM-07 : Device default setting for device initiated requests
2.5.7.1. Device Expected Behavior
This test is not applicable to hosts.
See section 13.2.4.3 of Serial ATA Revision 2.6.
If a device claims support device interface power management (Word 78 bit 3 set to one in IDENTIFY DEVICE or
IDENTIFY PACKET DEVICE data), support for device power management shall be disabled (Word 79 bit 3 cleared to
zero in IDENTIFY DEVICE or IDENTIFY PACKET DEVICE data) by default. A device shall not issue Partial/Slumber
requests unless this feature has been enabled by the host as a result of a SET FEATURES command.
• Power on device
Measurement Requirements
• Check Word 78 bit 3 in IDENTIFY DEVICE or IDENTIFY PACKET DEVICE (set to one)
• Check Word 79 bit 3 in IDENTIFY DEVICE or IDENTIFY PACKET DEVICE (cleared to zero)
• Issue SET FEATURES (Sector Count = 03h, Features = 10h) to enable device support for initiating power
management
• Issue COMRESET and complete OOB sequence
• Check Word 79 bit 3 in IDENTIFY DEVICE or IDENTIFY PACKET DEVICE
• This requirement must be verified on 10 total sequences