AM1707 datasheet(17/199 Pages) TI

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AM1707

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SPRS637A – FEBRUARY 2010 – REVISED APRIL 2010

3.6.3

Real-Time Clock and 32-kHz Oscillator

Table 3-5. Real-Time Clock (RTC) and 1.2-V, 32-kHz Oscillator Terminal Functions

PIN No.

SIGNAL NAME

TYPE(1)

PULL(2)

DESCRIPTION

ZKB

RTC_CVDD

PWR

RTC module core power ( isolated from rest of chip CVDD)

RTC_XI

Low-frequency (32-kHz) oscillator receiver for real-time clock

RTC_XO

Low-frequency (32-kHz) oscillator driver for real-time clock

RTC_Vss

GND

Oscillator ground (for filter)

(1)

I = Input, O = Output, I/O = Bidirectional, Z = High impedance, PWR = Supply voltage, GND = Ground, A = Analog signal.

Note: 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

3.6.4

External Memory Interface A (ASYNC, SDRAM)

Table 3-6. External Memory Interface A (EMIFA) Terminal Functions

No.

SIGNAL NAME

TYPE(1)

PULL(2)

MUXED

DESCRIPTION

ZKB

EMA_D[15]/UHPI_HD[15]/LCD_D[15]/GP0[15]

M16

I/O

IPD

EMA_D[14]/UHPI_HD[14]/LCD_D[14]/GP0[14]

N14

I/O

IPD

EMA_D[13]/UHPI_HD[13]/LCD_D[13]/GP0[13]

N16

I/O

IPD

EMA_D[12]/UHPI_HD[12]/LCD_D[12]/GP0[12]

P14

I/O

IPD

UHPI, LCD,

GPIO

EMA_D[11]/UHPI_HD[11]/LCD_D[11]/GP0[11]

P16

I/O

IPD

EMA_D[10]/UHPI_HD[10]/LCD_D[10]/GP0[10]

R14

I/O

IPD

EMA_D[9]/UHPI_HD[9]/LCD_D[9]/GP0[9]

T14

I/O

IPD

EMA_D[8]/UHPI_HD[8]/LCD_D[8]/GP0[8]

N12

I/O

IPD

MMC/SD, UHPI, EMIFA data bus

EMA_D[7]/MMCSD_DAT[7]/UHPI_HD[7]/GP0[7]/BOOT[13]

M15

I/O

IPU

GPIO, BOOT

EMA_D[6]/MMCSD_DAT[6]/UHPI_HD[6]/GP0[6]

N13

I/O

IPU

EMA_D[5]/MMCSD_DAT[5]/UHPI_HD[5]/GP0[5]

N15

I/O

IPU

EMA_D[4]/MMCSD_DAT[4]/UHPI_HD[4]/GP0[4]

P13

I/O

IPU

MMC/SD, UHPI,

GPIO

EMA_D[3]/MMCSD_DAT[3]/UHPI_HD[3]/GP0[3]

P15

I/O

IPU

EMA_D[2]/MMCSD_DAT[2]/UHPI_HD[2]/GP0[2]

R13

I/O

IPU

EMA_D[1]/MMCSD_DAT[1]/UHPI_HD[1]/GP0[1]

R15

I/O

IPU

MMC/SD, UHPI,

EMA_D[0]/MMCSD_DAT[0]/UHPI_HD[0]/GP0[0]/BOOT[12]

T13

I/O

IPU

GPIO, BOOT

(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 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

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