E981.03A38HB ELMOS Semiconductor, E981.03A38HB Datasheet - Page 38

• 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

In case VCC supply is switched off and either register
PS_CTRL access or U_Reset.request UART service are
used to switch VCC on the following will occur:
• VCC is switched on
• VCC is below its reset limit
• RESET will be activated
Table 27. Power supply status register
1) Access via UART service and SPI possible. In case of hard reset the register is reset to the hard reset value.
Table 28. Bus current source registers
Table 29. Maximum DC bus current
1) For write access read the remarks of every bit carefully. In case of hard or soft reset the register is reset to the hard reset value
Table 30. Maximum DC bus current selection
Table 31. Actual value of DC bus current
1) Access via UART service and SPI possible. In case of hard reset the register is reset to the hard reset value.
ELMOS Semiconductor AG reserves the right to change the detail specifications as may be required to permit improvements in the design of its products.
PS_STAT
content
hard reset value
soft reset value
access
bit description
Register Name
MAX_BUS_CURR
BUS_CURR_STAT
CURRENT_SLOPE
MAX_BUS_CURR
content
hard reset value
soft reset value
access
bit description
MAXCURR7
1
1
0
0
BUS_CURR_STAT
content
hard reset value
soft reset value
access
KNX/ EIB TRANSCEIVER
PRODUCTION DATA - JUL 2, 2012
ELMOS Semiconductor AG
or soft reset value respectively.
MSB
-
0
R
VCC_ON : this bit represents the actual state of the VCC supply.
"1": V
"0": V
V20_ON : this bit represents the actual state of the V20 supply.
"1": V
"0": V
MSB
MAXCURR7 MAXCURR6
1
1
R/W
MAXCURR : maximum DC bus current selection
MSB
CURR7
0
R
Address
0x20F
0x3B0
0x210
1)
1)
MAXCURR6
0
1
0
1
1)
CC
20
CC
20
is switched on.
is switched on.
is switched off.
is switched off.
-
0
R
1
1
R/W
CURR6
0
R
1)
1)
Description
set the maximum DC bus current
actual ADC value of DC bus current
set up the maximum bus current slope
1)
min
11.4 mA
17.1 mA
22.8 mA
28.5 mA
-
0
R
1)
-
0
-
R
CURR5
0
R
Data Sheet
1)
1)
38/51
-
0
R
• soft reset will be performed
Remark:
As a result the E981.03 will restart with soft reset in
these cases. Especially V20 will be switched on too.
1)
-
0
-
R
CURR4
0
R
- (not reset)
- (not reset)
1)
1)
Maximum DC bus current
typ
12 mA
24 mA
30 mA
-
0
R
18 mA
1)
-
0
-
R
CURR3
0
R
1)
1)
-
0
R
-
0
-
R
CURR2
0
R
1)
1)
1)
back to
back to
back to
QM-No.: 25DS0046E.01
max
12.6 mA
18.9 mA
25.2 mA
31.5 mA
VCC_ON V20_ON
0
R
-
0
-
R
CURR1
0
R
Table 8 Register Table
Table 8 Register Table
Table 8 Register Table
1)
1)
1)
E981.03
LSB
0
R
LSB
-
0
-
R
LSB
CURR0
0
R
1)
1)
1)