AM3874 datasheet(103/361 Pages) TI

103 / 361 page

AM3874, AM3871

www.ti.com

SPRS695C – SEPTEMBER 2011 – REVISED DECEMBER 2013

Table 3-28. SD1 Terminal Functions

SIGNAL

OTHER(2)

TYPE(1)

MUXED

DESCRIPTION

(3)

NAME

NO.

–

IPU

SD1_CLK

PINCNTL1

SD1 Clock output

DVDD_SD

DSIS: N/A

SD0, GP0

SD0_CMD/

IPU

PINCNTL9

SD1_CMD/

I/O

DVDD_SD

DSIS: N/A

GP0[2]

MM: MUX1

SD1 Command input/output

GP1

SD1_CMD/

IPU

PINCNTL2

I/O

GP0[0]

DVDD_SD

DSIS: N/A

MM: MUX0

IPU

–

SD1 Data0 I/O. Functions as data bit 0 for 4-/8-bit SD mode

SD1_DAT[0]

I/O

DVDD_SD

PINCNTL3

and single data bit for 1-bit SD mode.

IPU

–

SD1 Data1 I/O. Functions as data bit 1 for 4-/8-bit SD mode

SD1_DAT[1]_SDIRQ

I/O

DVDD_SD

PINCNTL4

and as an IRQ input for 1-bit SD mode.

IPU

–

SD1 Data2 I/O. Functions as data bit 2 for 4-/8-bit SD mode

SD1_DAT[2]_SDRW

I/O

DVDD_SD

PINCNTL5

and as a Read Wait input for 1-bit SD mode.

IPU

–

SD1_DAT[3]

I/O

SD1 Data3 I/O. Functions as data bit 3 for 4-/8-bit SD mode.

DVDD_SD

PINCNTL6

SD0_DAT[0]/

SD0, GP0

IPU

SD1_DAT[4]/

I/O

PINCNTL10

SD1 Data4 I/O. Functions as data bit 4 for 8-bit SD mode.

DVDD_SD

GP0[3]

DSIS: PIN

SD0_DAT[1]_SDIRQ/

SD0, GP0

IPU

SD1_DAT[5]/

I/O

PINCNTL11

SD1 Data5 I/O. Functions as data bit 5 for 8-bit SD mode.

DVDD_SD

GP0[4]

DSIS: PIN

SD0_DAT[2]_SDRW/

SD0, GP0

IPU

SD1_DAT[6]/

I/O

PINCNTL12

SD1 Data6 I/O. Functions as data bit 6 for 8-bit SD mode.

DVDD_SD

GP0[5]

DSIS: PIN

SD0_DAT[3]/

SD0, GP0

IPU

SD1_DAT[7]/

I/O

PINCNTL13

SD1 Data7 I/O. Functions as data bit 7 for 8-bit SD mode.

DVDD_SD

GP0[6]

DSIS: PIN

UART0_DCD/

UART3_RXD/

UART0, UART3,

SPI[0]_SCS[3]/

IPU

SPI[0], I2C[2], GP1

AH4

SD1 Card Power Enable output

I2C[2]_SCL/

DVDD

PINCNTL74

SD1_POW/

DSIS: PIN

GP1[2]

SPI[0]_SCS[1]/

SD1_SDCD/

SPI[0], SATA,

SATA_ACT0_LED/

IPU

EDMA, TIM4, GP1

AE5

SD1 Card Detect input

EDMA_EVT1/

DVDD

PINCNTL80

TIM4_IO/

DSIS: 1

GP1[6]

UART0_DSR/

UART3_TXD/

UART0, UART3,

SPI[0]_SCS[2]/

IPU

SPI[0], I2C[2], GP1

AG4

SD1 Card Write Protect input

I2C[2]_SDA/

DVDD

PINCNTL75

SD1_SDWP/

DSIS: 0

GP1[3]

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

resistors are required, see Section 4.5.1, Pullup/Pulldown Resistors and Section 7.3.17, Pin Behaviors at Reset.

(3)

Specifies the operating I/O supply voltage for each signal

Device Pins

103

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