E981.03A38HB ELMOS Semiconductor, E981.03A38HB Datasheet - Page 20

• 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

6.4 Communication Mode
ELMOS Semiconductor AG reserves the right to change the detail specifications as may be required to permit improvements in the design of its products.
Mode
Hard reset
Start-up
Soft reset
Analog
Normal
Bus monitor
Busy
KNX/ EIB TRANSCEIVER
PRODUCTION DATA - JUL 2, 2012
ELMOS Semiconductor AG
BS1 = 1
BS0 = 1
Figure 10. E981.03 Communication Mode
V
V
V
V
V
V
V
VST,VCCon
V20,off
VST,SAVE,LH
VST,SAVE,HL
VST,VCCoff
V33I,reset,act
RESET_N,HL
I
I
I
SAVE_N
RESET_N
BUSP,MAX
BUSP,SS
BUSP,SSpu
CMOD = Bus
I
V33I
Monitoring
V
I
1
Prioritization
1
2
3
4
5
5
4
2
CMOD = Busy
3
Communication Mode
4
Addressed Mode
{optional}
5
Figure 9. Undervoltage Condition
CMOD = Normal
V
I
VST
BUSP
V
SoftStart
Phase 2
I
VCC
V33I,VST
I
BUSP
V
Data Sheet
20/51
VST
6
In figure 10 the four communication sub modes are
shown. The mode controlling registers can be modified
through UART or SPI commands.
For mode controlling registers see registers “DEVMODE”
und “CMODE”.
The Prioritization is higher with a lower value.
V
V33I
7
8
9
V
V20
I
V33I,VCC
10
QM-No.: 25DS0046E.01
11
12
13
14
E981.03
t
t
t
t
t