AM3874 datasheet(96/345 Pages) TI1

96 / 345 page

AM3874, AM3872, AM3871

SPRS695

– SEPTEMBER 2011

www.ti.com

3.2.15 Serial ATA (SATA) Signals

Table 3-26. Serial ATA (SATA) Terminal Functions

SIGNAL

TYPE(1)

OTHER(2) (3)

MUXED

DESCRIPTION

NAME

NO.

–

Serial ATA Data Transmit.

SATA_TXN0

AB1

–

VDDA_SATA_1P8

When the SATA SERDES are powered down, these

–

SATA_TXP0

AB2

–

pins should be left unconnected.

VDDA_SATA_1P8

–

Serial ATA Data Receive.

SATA_RXN0

AA2

–

VDDA_SATA_1P8

When the SATA SERDES are powered down, these

–

SATA_RXP0

AA1

–

pins should be left unconnected.

VDDA_SATA_1P8

SPI[0]_SCS[1]/

SPI[0], SD1,

SD1_SDCD/

EDMA, TIMER 4,

SATA_ACT0_LED/

IPU

AE5

GP1

Serial ATA disk 0 Activity LED output

EDMA_EVT1/

DVDD

PINCNTL80

TIM4_IO/

DSIS: N/A

GP1[6]

–

PCIE Serdes Reference Clock Inputs and optional

SERDES_CLKP

AF1

SERDES_CLK

–

SATA Reference Clock Inputs.

LDO (internal)

Shared between PCI Express and Serial ATA. When

PCI Express is not used, and these pins are not used

–

as optional SATA Reference Clock Inputs, these pins

SERDES_CLKN

AF2

SERDES_CLK

–

should be left unconnected.

LDO (internal)

(1)

I = Input, O = Output, Z = High impedance, S = Supply voltage, GND = Ground, A = Analog signal, MM = Multi Muxed, DSIS =

De-selected Input State

(2)

IPD = Internal Pulldown Active, IPU = Internal Pullup Active, DIS = Internal Pull Disabled. This represents the default state of the

Internal Pull during and after Reset. For more detailed information on pullup/pulldown resistors and situations where external

pullup/pulldown resistors are required, see , Pullup/Pulldown Resistors and , Pin Behaviors at Reset.

(3)

Specifies the operating I/O supply voltage for each signal

Device Pins

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