E981.03 Datasheet, PDF (38/51 Pages) ELMOS Semiconductor AG – Autonomous MAC and individual physical address

KNX/ EIB TRANSCEIVER
PRODUCTION DATA - JAN 15, 2015
E981.03
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
• 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.
Table 27. Power supply status register
back to Table 8 Register Table
PS_STAT
content
hard reset value
soft reset value
access
bit description
MSB
-
-
-
-
-
-
0
0
0
0
0
0
- (not reset)
R ¹⁾
R ¹⁾
R ¹⁾
R ¹⁾
R ¹⁾
R ¹⁾
VCC_ON : this bit represents the actual state of the VCC supply.
"1": V_CC is switched on.
"0": V_CC is switched off.
V20_ON : this bit represents the actual state of the V20 supply.
"1": V₂₀ is switched on.
"0": V₂₀ is switched off.
LSB
VCC_ON V20_ON
0
0
R ¹⁾
R ¹⁾
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
Register Name
MAX_BUS_CURR
BUS_CURR_STAT
CURRENT_SLOPE
Address
0x20F
0x3B0
0x210
Description
set the maximum DC bus current
actual ADC value of DC bus current
set up the maximum bus current slope
Table 29. Maximum DC bus current
back to Table 8 Register Table
MAX_BUS_CURR MSB
LSB
content
MAXCURR7 MAXCURR6 -
-
-
-
-
-
hard reset value 1
1
0
0
0
0
0
0
soft reset value 1
1
-
-
-
-
-
-
access
R/W ¹⁾
R/W ¹⁾
R ¹⁾
R ¹⁾
R ¹⁾
R ¹⁾
R ¹⁾
R ¹⁾
bit description MAXCURR : maximum DC bus current selection
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
or soft reset value respectively.
Table 30. Maximum DC bus current selection
MAXCURR7
1
1
0
0
MAXCURR6
0
1
0
1
min
11.4 mA
17.1 mA
22.8 mA
28.5 mA
Maximum DC bus current
typ
max
12 mA
12.6 mA
18 mA
18.9 mA
24 mA
25.2 mA
30 mA
31.5 mA
Table 31. Actual value of DC bus current
back to Table 8 Register Table
BUS_CURR_STAT MSB
content
CURR7
CURR6
CURR5 CURR4 CURR3 CURR2 CURR1
hard reset value 0
0
0
0
0
0
0
soft reset value
- (not reset)
access
R ¹⁾
R ¹⁾
R ¹⁾
R ¹⁾
R ¹⁾
R ¹⁾
R ¹⁾
1) Access via UART service and SPI possible. In case of hard reset the register is reset to the hard reset value.
LSB
CURR0
0
R ¹⁾
Elmos Semiconductor AG reserves the right to change the detail specifications as may be required to permit improvements in the design of its products.
Elmos Semiconductor AG
Data Sheet
QM-No.: 25DS0046E.03
38/51