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SII3531A 데이터시트(PDF) 75 Page - Silicon image |
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SII3531A 데이터시트(HTML) 75 Page - Silicon image |
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75 / 81 page PCI Express to Serial ATA Controller Data Sheet Silicon Image, Inc. © 2006 Silicon Image, Inc. SiI-DS-0208-C 75 0010 Limit to Generation 2 (3.0 Gb/s) others Reserved • Bit [03:00]: DET (R/W) – This field controls host adapter device detection and interface initialization. Value Action 0000 No action 0001 COMRESET is periodically generated until another value is written to the field 0100 No action Others Reserved, no action 6.3.21 SStatus Address Offset: 1F04H Access Type: Read Reset Value: 0x0000_0000 31 30 29 28 27 26 25 24 23 22 21 20 19 18 17 16 15 14 13 12 11 10 09 08 07 06 05 04 03 02 01 00 Reserved IPM SPD DET This register is the SStatus register as defined by the Serial ATA specification (section 10.1.1). • Bit [31:12]: Reserved (R). This bit field is reserved and returns zeros on a read. • Bit [11:08]: IPM (R) – This field identifies the current interface power management state. Value Definition 0000 Device not present or communication not established 0001 Interface in active state 0010 Interface in Partial power management state 0110 Interface in Slumber power management state Others Reserved • Bit [07:04]: SPD (R) – This field identifies the negotiated interface communication speed. Value Definition 0000 No negotiated speed (reported if phygood false) 0001 Generation 1 communication rate (1.5 Gb/s) 0010 Generation 2 communication rate (3.0 Gb/s) Others Reserved • Bit [03:00]: DET (R) – This field indicates the interface device detection and PHY state. Value Action 0000 No device detected and PHY communication not established (phygood false) 0001 Device presence detected but PHY communication not established 0011 Device presence detected and PHY communication established (phygood true) 0100 PHY in offline mode as a result of the interface being disabled or running in a BIST loopback mode Others Reserved, no action |
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