Idle Register (Idle); Idle Register (Idle) Field Description - Texas Instruments TMS320C6A816 Series Technical Reference Manual

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16.4.36 Idle Register (IDLE)

The Idle Register (IDLE) is used to control the idle and standby modes.
The Idle Register (IDLE) is shown in
31
15
LEGEND: R = Read only; -n = value after reset
Bit Field Value
31-18 Reserved 0
17 OVERRIDE1
0
1
16 OVERRIDE0
0
1
15-4 Reserved 0
3-2 STANDBYM
ODE
1-0 IDLEMODE
SPRUGX9 – 15 April 2011
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Preliminary
Figure 16-37
Figure 16-37. Idle Register (IDLE)
Reserved
R-0
Reserved
R-0
Table 16-39. Idle Register (IDLE) Field Description
Description
Reserved.
Override for Clock Stopping. Normally the functional clock can only be stopped if the link is put into
partial or slumber power mode. However, if there is no device attached (such as in a removable media
situation) or the device has not been started the user may wish to stop the functional clocks but not be
able to enter a low power state. In this case, software can set the OVERRIDE bit to 1, removing the
requirement for a low power state.
WARNING: If there is a device attached, the OVERRIDE bit is used, and the functional clock is stopped
when the link is not in a low power state it will ruin the link and cause undetermined behavior. A port
reset or full SATASS reset may be required to recover.
Normal.
Override.
Override for Clock Stopping. Normally the functional clock can only be stopped if the link is put into
partial or slumber power mode. However, if there is no device attached (such as in a removable media
situation) or the device has not been started the user may wish to stop the functional clocks but not be
able to enter a low power state. In this case, software can set the OVERRIDE bit to 1, removing the
requirement for a low power state.
WARNING: If there is a device attached, the OVERRIDE bit is used, and the functional clock is stopped
when the link is not in a low power state it will ruin the link and cause undetermined behavior. A port
reset or full SATASS reset may be required to recover.
Normal.
Override.
Reserved.
This gives direct control to the standby_mode control of the standby generic.
This gives direct control to the idle_mode control of the idle generic.
Note: Only force idle mode is supported.
© 2011, Texas Instruments Incorporated
and described in Table 16-39.
18
4 3
STANDBYMODE
R/W-0
Serial ATA (SATA) Controller
Registers
17 16
OVERRIDE1 OVERRIDE0
R/W-0 R/W-0
2 1 0
IDLEMODE
R/W-0
1631