E981.03A38HB ELMOS Semiconductor, E981.03A38HB Datasheet - Page 46

• Manufacturer Part Number: E981.03A38HB
• Description: Interface - Specialized KNX/EIB transceiver
• Manufacturer: ELMOS Semiconductor

Specifications of E981.03A38HB

• Rohs: yes
• Product Type: KNX/EIB Transceiver
• Operating Supply Voltage: 3.3 V
• Supply Current: 10 mA
• Maximum Power Dissipation: 1 W
• Maximum Operating Temperature: + 85 C
• Mounting Style: SMD/SMT
• Package / Case: QFN-32
• Minimum Operating Temperature: - 25 C

Register SPI_PINS is used for SPI pin value accesses. Bits SCS and SCK reflect the state of IC pins in any case of op-
eration mode.
When SPI is switched off (bits ON1 and ON0 of register SPI_CTRL are both „0“) MOSI and MISO are used as gen-
eral purpose input / output of the E981.03 that can be controlled by host processor. Pins SCS and SCK can be
used as general purpose input pin.
Table 60. SPI pin access
1) Access via UART service and SPI possible.
Table 61. RESET_CTRL
Table 62. RESET_CTRL control register
1) Access via UART service and SPI possible. In case of hard or soft reset the register is reset to the hard reset value or soft reset
ELMOS Semiconductor AG reserves the right to change the detail specifications as may be required to permit improvements in the design of its products.
SPI_PINS
content
hard reset value
soft reset value
SPI switched on
SPI switched off
access
bit description
Register Name
RESET_CTRL
RESET_CTRL
content
hard reset value
soft reset value
access
bit description
KNX/ EIB TRANSCEIVER
PRODUCTION DATA - JUL 2, 2012
ELMOS Semiconductor AG
value respectively.
MSB
-
0
R
MOSIEN : this bit set the pin direction 0 means high ohmic input 1 mean output.
MISOEN : this bit set the pin direction 0 means high ohmic input 1 mean output.
MISO
MOSI
SCSN
SCK
MSB
-
0
-
R
RST :
Writing a “1” to bit RST results in a transition to soft reset state. Writing to the RESET_CTRL
register is the way to initiate a soft reset via either host SPI or host UART interfaces.
Address
0x201
: if the pin is used as a input this bit reflects the input state and
: if the pin is used as a input this bit reflects the input state and
: this bit reflects the input state of the SCS pin
: this bit reflects the input state of the SCK pin
(enable for tri-state output)
if the pin is used as a output the user write the output level.
if the pin is used as a output the user write the output level.
-
0
R
-
0
-
R
Description
RESET_CTRL control register
register bits reflect always the state of the physical pins
MOSIEN
0
R/W
-
0
-
R
defining reset values makes no sense
1)
Data Sheet
46/51
MISOEN
1
R/W
-
0
-
R
1)
MISO
pin values
R/W
-
0
-
R
1)
MOSI
R/W
-
0
-
R
back to
back to
1)
QM-No.: 25DS0046E.01
SCSN
R
-
0
-
R
Table 8 Register Table
Table 8 Register Table
1)
E981.03
LSB
SCK
R
LSB
RST
0
0
R/W
1)
1)