XRS10L240 Datasheet, PDF (33/38 Pages) Exar Corporation – SERIAL ATA II: PORT MULTIPLIER / PORT SELECTOR

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EXSTOR - 1 XRS10L240
SERIAL ATA II: PORT MULTIPLIER / PORT SELECTOR
TABLE 19: SATA STANDARD REGISTERS - DEVICE PORT (0 TO 3) - STATUS AND CONTROL
NOTE: Registers designated as WC are write clear. In order to clear a particular bit or bit field within a WC designated
register, write a ‘1’ to that bit or bit field.
REGISTER BIT(S)
NAME
TYPE
DEFAULT
VALUE
DESCRIPTION
PSCR(0) 31 - 12 Reserved R/O
(SStatus) _{11 - 8}
IPM
R/O
0x0 Reserved
0x0 The IPM value indicates the current interface power man-
agement state
0000b = Device not present or communication not estab-
lished
0001b = Interface in active state
0010b= Interface in Partial power management state
0110b = Interface in Slumber power management state
All other values reserved
7 -4
SPD
R/O
0x0 The SPD value indicates the negotiated interface communi-
cation speed established
0000b = No negotiated speed (device not present or com-
munication not established)
0001b = Generation 1 communication rate negotiated
0010b = Generation 2 communication rate negotiated
All other values reserved
3-0
DET
R/O
0x0 The DET value indicates the interface device detection and
Phy state.
0000b = No device detected and Phy communication not
established
0001b = Device presence detected but Phy communication
not established
0011b = Device presence detected and Phy communication
established
0100b = Phy in offline mode as a result of the interface being
disabled or running in a BIST loopback mode
All other values reserved
PSCR(1)
(SError)
31 - 16
15 - 0
DIAG
ERR
RWC
RWC
0x40
0x0
See description below
See description below
PSCR(2) 31 - 19 Reserved R/O
(SControl)
20 - 16 Reserved RW
0x0 Reserved All reserved fields shall be cleared to zero.
0x0 Reserved All reserved fields shall be cleared to zero
15 - 12
SPM
RW
0x0 See description below
11 - 8
IPM
RW
0x0 See description below
7-4
SPD
RW
0x0 See description below
3-0
DET
RW
0x4 See description below
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