AM1808AZCED4 datasheet(47/264 Pages) TI

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AM1808

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SPRS653 – FEBRUARY 2010

3.7.22

Universal Host-Port Interface (UHPI)

Table 3-24. Universal Host-Port Interface (UHPI) Terminal Functions

SIGNAL

POWER

TYPE(1)

PULL(2)

DESCRIPTION

GROUP(3)

NAME

NO.

VP_DIN[7] / UHPI_HD[15] / UPP_D[15] / RMII_TXD[1] /

U18

I/O

CP[26]

PRU0_R31[29]

VP_DIN[6] / UHPI_HD[14] / UPP_D[14] / RMII_TXD[0] /

V16

I/O

CP[26]

PRU0_R31[28]

VP_DIN[5] / UHPI_HD[13] / UPP_D[13] / RMII_TXEN /

R14

I/O

CP[26]

PRU0_R31[27]

VP_DIN[4] / UHPI_HD[12] / UPP_D[12] / RMII_RXD[1] /

W16

I/O

CP[26]

PRU0_R31[26]

VP_DIN[3] / UHPI_HD[11] / UPP_D[11] / RMII_RXD[0] /

V17

I/O

CP[26]

PRU0_R31[25]

VP_DIN[2] / UHPI_HD[10] / UPP_D[10] / RMII_RXER /

W17

I/O

CP[26]

PRU0_R31[24]

VP_DIN[1] / UHPI_HD[9] / UPP_D[9] / RMII_MHZ_50_CLK /

W18

I/O

CP[26]

PRU0_R31[23]

VP_DIN[0] / UHPI_HD[8] / UPP_D[8] / RMII_CRS_DV /

W19

I/O

CP[26]

UHPI data bus

PRU1_R31[29]

VP_DIN[15]_VSYNC / UHPI_HD[7] / UPP_D[7]/PRU0_R30[15] /

V18

I/O

CP[27]

PRU0_R31[15]

VP_DIN[14]_HSYNC / UHPI_HD[6] / UPP_D[6]/ PRU0_R30[14] /

V19

I/O

CP[27]

PRU0_R31[14]

VP_DIN[13]_FIELD / UHPI_HD[5] / UPP_D[5] / PRU0_R30[13] /

U19

I/O

CP[27]

PRU0_R31[13]

VP_DIN[12] / UHPI_HD[4] / UPP_D[4] / PRU0_R30[12] /

T16

I/O

CP[27]

PRU0_R31[12]

VP_DIN[11] / UHPI_HD[3] / UPP_D[3] / PRU0_R30[11] /

R18

I/O

CP[27]

PRU0_R31[11]

VP_DIN[10] / UHPI_HD[2] / UPP_D[2] / PRU0_R30[10] /

R19

I/O

CP[27]

PRU0_R31[10]

VP_DIN[9] / UHPI_HD[1] / UPP_D[1] / PRU0_R30[9] / PRU0_R31[9]

R15

I/O

CP[27]

VP_DIN[8] / UHPI_HD[0] / UPP_D[0] / GP6[5] / PRU1_R31[0]

P17

I/O

CP[27]

PRU0_R30[29] / UHPI_HCNTL0 / UPP_CHA_CLOCK / GP6[11]

U17

CP[24]

UHPI access control

PRU0_R30[28] / UHPI_HCNTL1 / UPP_CHA_START / GP6[10]

W15

CP[24]

UHPI half-word

PRU0_R30[27] / UHPI_HHWIL / UPP_CHA_ENABLE / GP6[9]

U16

CP[24]

identification control

PRU0_R30[26] /UHPI_HRW / UPP_CHA_WAIT /

T15

CP[24]

UHPI read/write

GP6[8]/PRU1_R31[17]

VP_CLKIN0 / UHPI_HCS / PRU1_R30[10] / GP6[7] / UPP_2xTXCLK

W14

CP[25]

UHPI chip select

VP_CLKIN1 / UHPI_HDS1 / PRU1_R30[9] / GP6[6] / PRU1_R31[16]

V15

CP[25]

UHPI data strobe

CLKOUT / UHPI_HDS2 / PRU1_R30[13] / GP6[14]

T18

CP[22]

PRU0_R30[30] / UHPI_HINT / PRU1_R30[11] / GP6[12]

R16

CP[23]

UHPI host interrupt

(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 weakly pulled down. If the application requires a

pull-up, an external pull-up can be used.

(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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