E981.12A39BB ELMOS Semiconductor, E981.12A39BB Datasheet - Page 36

• 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
6.5
The SPI interface is used for configuration, diagnostic and data transfer purposes. The SPI provides 16
bit read and write access as well as burst access to the internal transceiver (TRX) buffers.
The SPI interface consists of the pins SCSN, SCLK, MOSI, MISO, INTN supplied by VDD voltage. The
input thresholds and output levels are referenced to this voltage. Digital input pins have pull-up/-down
circuits described in chapter „Pinout description“
Several consecutive bytes are transfered during active chip select form a SPI access. SPI characters
are transfered MSB first. The E981.12 uses two different SPI access types:
•
•
The first byte of a SPI access is the command byte. It contains:




:
6.5.1
The standard register access is used for all configuration and status registers. An interbyte gap of t
has to be ensured by the host.
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
Standard register access (16 bit)
TRX buffer burst access
Bit 7:
Bit 6:
Bits 5/4:
Bits 3..0:
SPI Interface
Standard Register Access
0 = read or
0 = single or
always 0
register or buffer code
Fig. 16: SPI single read and write access
1 = write access
1 = burst access
Data Sheet 36 / 44
QM-No.: 25DS0069E.00
E981.12
IBG