DS125BR820: whether the customer can use the device for 1 channel pcie, 2 channel SATA in one device?

Frank Xiao

Genius 12055 points

Part Number: DS125BR820

Hi team,

whether the customer can use the device for 1 channel pcie, 2 channel SATA in one device? Thanks.

over 6 years ago

0 Lee Sledjeski over 6 years ago

TI__Mastermind 43795 points

Hi Frank,

Yes, the device is fine to mix PCIe and SATA. The RXDET configuration should follow PCIe requiements.

Regards,

Lee

0 Frank Xiao over 6 years ago in reply to Lee Sledjeski

TI__Genius 12055 points

HI Lee,

How to set the configuration? whether the PCIE channel is RXDET is R or F? whether other settings are SATA? Thanks.

PWDN	RXDET	SMBus REG Bit
0	R	01
0	F	10

0 Lee Sledjeski over 6 years ago in reply to Frank Xiao

TI__Mastermind 43795 points

Hi Frank,

Set RXDET to the default level (Float). If programming the device using SMBus or EEPROM it is possible to set each channel individually, but not required for SAS/SATA as it will work with RXDET = F.

Regards,

Lee

0 Frank Xiao over 6 years ago in reply to Lee Sledjeski

TI__Genius 12055 points

Hi Lee,

Could you please share the configuration with using the one channel PCIE, one channel SATA as a example? Thanks.

0 Brian Zhou over 6 years ago in reply to Frank Xiao

TI__Guru*** 148480 points

Frank:

Lee will be back to office next week.

Regards,

Brian

0 Lee Sledjeski over 6 years ago in reply to Frank Xiao

TI__Mastermind 43795 points

Hi Frank,

PWDN = 0

RXDET = Float

RESEVERED1 = Float

RESERVED2 = 0

RESERVED3 = 0

SD_TH = Float

VDD_SEL = 0 for 3.3V VIN operation

VDD_SEL = Float for 2.5V external regulator operation

Set EQ and VOD as needed for optimal signaling, Typically:

EQA = EQB = Float or 1

VODA1/VODB1 = 0

VODA0/VODB0 = 1

Interface

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DS125BR820: whether the customer can use the device for 1 channel pcie, 2 channel SATA in one device?