AM3874 datasheet(104/361 Pages) TI

104 / 361 page

AM3874, AM3871

SPRS695C – SEPTEMBER 2011 – REVISED DECEMBER 2013

www.ti.com

Table 3-29. SD2 Terminal Functions

SIGNAL

TYPE(1)

OTHER(2) (3)

MUXED

DESCRIPTION

NAME

NO.

GP1

SD2_SCLK/

IPU

M23

PINCNTL121

SD2 Clock output

GP1[15]

DVDD_GPMC

DSIS: N/A

GPMC_CS[4]/

GPMC, GP1

IPU

SD2_CMD/

P25

I/O

PINCNTL126

SD2 Command input/output

DVDD_GPMC

GP1[8]

DSIS: N/A

SD2_DAT[0]/

GPMC, GP1

IPU

SD2 Data0 I/O. Functions as data bit 0 for 4-/8-bit SD

GPMC_A[4]/

L26

I/O

PINCNTL120

DVDD_GPMC

mode and single data bit for 1-bit SD mode.

GP1[14]

DSIS: PIN

SD2_DAT[1]_SDIRQ/

GMPC, GP1

IPU

SD2 Data1 I/O. Functions as data bit 1 for 4-/8-bit SD

GPMC_A[3]/

M24

I/O

PINCNTL119

DVDD_GPMC

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

GP1[13]

DSIS: PIN

SD2_DAT[2]_SDRW/

GPMC, GP2

IPU

SD2 Data2 I/O. Functions as data bit 2 for 4-/8-bit SD

GPMC_A[2]/

K27

I/O

PINCNTL118

DVDD_GPMC

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

GP2[6]

DSIS: PIN

SD2_DAT[3]/

GPMC, GP2

IPU

SD2 Data3 I/O. Functions as data bit 3 for 4-/8-bit SD

GPMC_A[1]/

J28

I/O

PINCNTL117

DVDD_GPMC

mode.

GP2[5]

DSIS: PIN

SD2_DAT[4]/

GPMC_A[27]/

GPMC, EDMA,

GPMC_A[23]/

IPU

TIM7, GP1

GPMC_CS[7]/

R24

I/O

SD2 Data4 I/O. Functions as data bit 4 for 8-bit SD mode.

DVDD_GPMC

PINCNTL116

EDMA_EVT0/

DSIS: PIN

TIM7_IO/

GP1[22]

SD2_DAT[5]/

GPMC, TIM6,

GPMC_A[26]/

IPU

GP1

GPMC_A[22]/

P22

I/O

SD2 Data5 I/O. Functions as data bit 5 for 8-bit SD mode.

DVDD_GPMC

PINCNTL115

TIM6_IO/

DSIS: PIN

GP1[21]

SD2_DAT[6]/

GPMC, UART2,

GPMC_A[25]/

IPU

GP1

GPMC_A[21]/

N23

I/O

SD2 Data6 I/O. Functions as data bit 6 for 8-bit SD mode.

DVDD_GPMC

PINCNTL114

UART2_TXD/

DSIS: PIN

GP1[20]

SD2_DAT[7]/

GPMC, UART2,

GPMC_A[24]/

IPU

GP1

GPMC_A[20]/

L25

I/O

SD2 Data7 I/O. Functions as data bit 7 for 8-bit SD mode.

DVDD_GPMC

PINCNTL113

UART2_RXD/

DSIS: PIN

GP1[19]

UART0_RTS/

UART0, UART4,

UART4_TXD/

IPD

DCAN1, SPI[1]

DCAN1_RX/

AF5

SD2 Card Detect input.

DVDD

PINCNTL73

SPI[1]_SCS[2]/

DSIS: 1

SD2_SDCD

(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 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

104

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