E981.12A39BB ELMOS Semiconductor, E981.12A39BB Datasheet - Page 18

• Manufacturer Part Number: E981.12A39BB
• Description: Interface - Specialized Dual I/O Link Master Transciever
• Manufacturer: ELMOS Semiconductor

Specifications of E981.12A39BB

• Rohs: yes
• Product Type: Dual I/O link Master Transceiver
• Operating Supply Voltage: 3.3 V
• Supply Current: 5.5 mA
• Maximum Operating Temperature: + 105 C
• Mounting Style: SMD/SMT
• Package / Case: QFN-44
• Minimum Operating Temperature: - 40 C

Dual IO-Link Master Transceiver with UARTS
ADVANCE PRODUCT INFORMATION - JUL 26, 2011
6.3.1.2
In SIO mode the external load at CQ_OUT may have resistive, capacitive or inductive characteristic or
can be a bulb lamp. The loads can be connected between CQ_OUTx and Lx or between CQ_OUTx
and PGNDx.
It is possible to switch the load in the following ways:
TXD constant, switching with TXEN
In this case the high-side driver (if TXD = Low) or the low-side driver (if TXD = High) is used, so the load
is switched either between " Active Low" and "Tristate" or between "Active High" and "Tristate".
In case of inductive loads inherent diodes of the drivers act as free-wheeling elements.
6.3.2
The receiver converts the voltage level at the CQ_IN pin to an inverted logic receive signal which is
available at pin RXD and the internal UART. The receiver filter times depends on the configured
baudrate. The receiver functionality is available in the specified IO-Link supply range.
The receiver can be configured by bit IEC-2 in TRX CFG either as standard IO-LINK / IEC61131-2 input
or as standard IEC61131-1 input.
The input current source can be activated by bit PDEN in register TRX CFG. Setting bit PDAUTO the
current source is disabled while the driver stage is active during SIO mode or communication mode
(TXEN=1) in order to reduce power dissipation.
6.3.3
Each C/Q channel can be used as an input or output, while the output can be configured to switch
between high side, low side and HiZ.
SIO mode can be used by pins TXEN, TXD, RXD or by SPI control. The mode can be configured by
register CH_CFG. If bit SIO is set to „1“ the output control is done by SPI access to register TRX_CFG
bits STXD and STXEN. The receiver status can be read by register CH_STAT bit RXD.
This document contains information on a new product. ELMOS Semiconductor AG reserves the right to change specifications and information herein without notice.
ELMOS Semiconductor AG
TXEN = constant High, switching with TXD
In this case CQ_OUT is driven as push-pull output.
TXD = Low: high-side driver active
TXD = High: low-side driver active
In case of inductive loads the complemantary driver acts as free-wheeling element.
IOLINK-Receiver
SIO-Mode
Transmitter Loads
Data Sheet 18 / 44
QM-No.: 25DS0069E.00
E981.12