AM1808_11 Datasheet, PDF (44/265 Pages) Texas Instruments – AM1808 ARM Microprocessor

AM1808
SPRS653B – FEBRUARY 2010 – REVISED APRIL 2011
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2.7.21 Serial ATA Controller (SATA)
Table 2-23. Serial ATA Controller (SATA) Terminal Functions
SIGNAL
NAME
TYPE ⁽¹⁾
NO.
PULL ⁽²⁾
POWER
GROUP ⁽³⁾
DESCRIPTION
SATA_RXP
SATA_RXN
SATA_TXP
SATA_TXN
SATA_REFCLKP
SATA_REFCLKN
SPI0_SCS[3] / UART0_CTS / GP8[2] /
MII_RXD[1] / SATA_MP_SWITCH
L1
I
L2
I
J1
O
J2
O
N2
I
N1
I
E17
I
—
—
—
—
—
—
CP[9]
—
SATA receive data (positive)
—
SATA receive data (negative)
—
SATA transmit data (positive)
—
SATA transmit data (negative)
—
SATA PHY reference clock (positive)
—
SATA PHY reference clock (negative)
A
SATA mechanical presence switch input
SPI0_SCS[2] / UART0_RTS / GP8[1] /
MII_RXD[0] / SATA_CP_DET
D16
I
CP[9]
A
SATA cold presence detect input
SPI1_SCS[2] / UART1_TXD /
SATA_CP_POD / GP1[0]
F19
O
CP[13]
A
SATA cold presence power-on output
SPI1_SCS[3] / UART1_RXD / SATA_LED /
GP1[1]
E18
O
CP[13]
A
SATA LED control output
SATA_REG
N3
A
—
—
SATA PHY PLL regulator output. Requires an
external 0.1uF filter capacitor.
SATA_VDDR
SATA_VDD
P3 PWR
—
M2,
P1,
P2,
PWR
—
N4
—
SATA PHY 1.8V internal regulator supply
—
SATA PHY 1.2V logic supply
SATA_VSS
H1,
H2,
K1,
K2,
GND
—
L3,
M1
—
SATA PHY ground reference
(1) I = Input, O = Output, I/O = Bidirectional, Z = High impedance, PWR = Supply voltage, GND = Ground, A = Analog signal.
Note: The pin type shown refers to the input, output or high-impedance state of the pin function when configured as the signal name
highlighted in bold. All multiplexed signals may enter a high-impedance state when the configured function is input-only or the configured
function supports high-Z operation. All GPIO signals can be used as input or output. For multiplexed pins where functions have different
types (ie., input versus output), the table reflects the pin function direction for that particular peripheral.
(2) IPD = Internal Pulldown resistor; IPU = Internal Pullup resistor; CP[n] = configurable pull-up/pull-down (where n is the pin group) using
the PUPDENA and PUPDSEL registers in the System Module. The pull-up and pull-down control of these pins is not active until the
device is out of reset. During reset, all of the pins associated with these registers are pulled down. If the application requires a pull-up,
an external pull-up can be used. For electrical specifications on the pull-up and and internal pull-down circuits, see the Device Operating
Conditions section.
(3) This signal is part of a dual-voltage IO group (A, B or C). These groups can be operated at 3.3V or 1.8V nominal. The three groups can
be operated at independent voltages but all pins withina group will operate at the same voltage. Group A operates at the voltage of
power supply DVDD3318_A. Group B operates at the voltage of power supply DVDD3318_B. Group C operates at the voltage of power
supply DVDD3318_C.
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