Epson Powerspan Instrukcja Użytkownika Pobierz pdf (Strona 19)

DIMM.AM335x (Rev3) 19/24

5 Signal Characteristics

Abbreviations:

AI analogue input

AO analogue output

A I/O analogue bidirectional

I input

O totem pole output

OD open drain output

I/O bidirectional

PU xK pull-up resistor, x KΩ

PD xK pull-down resistor, x KΩ

SR xR series resistor x Ω

IPD processor internal pull-down resistor, typ. 50 KΩ

5.1 J1, SODIMM Connector

Name

GPIO

Direction

Termination

Level [V]

Description

SPEED_LED#

3.3

Speed indicator, 0 = 100Mb

ETH_TDP

Ethernet TX pos.

ETH_TDM

Ethernet TX neg.

ETH_RDP

Ethernet RX pos.

ETH_RDN

Ethernet RX neg.

LINK_LED#

3.3

Traffic indicator

USBH_PEN#

3.3

Power enable signal for VBUS

switch

USBH_OC#

GPIO1_20

PU 10K

3.3

Overcurrent signal from VBUS

switch

USBH_DP

I/O

IPD 15K

USB data pos.

USBH_DM

I/O

IPD 15K

USB data neg.

USBF_VBUS

PD 15.6 K

VBUS detection

USBF_DP

I/O

USB data pos.

USBF_DM

I/O

USB data neg.

UART0_TXD#

RS232

UART transmit data

UART0_RXD#

RS232

UART receive data

UART1_TXD

PU 10K

3.3

UART transmit data

UART1_RXD

3.3

UART receive data

UART4_TXD

3.3

UART transmit data

UART4_RXD

3.3

UART receive data

UART3_TXD

3.3

UART transmit data

UART3_RXD

3.3

UART receive data

UART3_RTS/

CAN1_RX

O/I

3.3

UART flow control, CAN

receive data

UART3_CTS/

CAN1_TX

I/O

3.3

UART flow control, CAN

transmit data

CAN_TX

3.3

CAN transmit data

CAN_RX

PU 10K

3.3

CAN receive data

TOUCH_XP

A I/O

3.3

X pos terminal

TOUCH_XM

A I/O

3.3

X neg terminal

1 2 ... 14 15 16 17 18 19 20 21 22 23 24

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