E910.54B37AB ELMOS Semiconductor, E910.54B37AB Datasheet - Page 12

• Manufacturer Part Number: E910.54B37AB
• Description: Interface - Specialized FlexRay Transceiver
• Manufacturer: ELMOS Semiconductor

Specifications of E910.54B37AB

• Rohs: yes
• Product Type: FlexRay Transceiver
• Operating Supply Voltage: 5 V
• Supply Current: 50 mA
• Maximum Power Dissipation: 150 mW
• Maximum Operating Temperature: + 125 C
• Mounting Style: SMD/SMT
• Package / Case: TSSOP-14
• Minimum Operating Temperature: - 40 C

4.1.3.2 Operation mode transitions
Mode transitions happen upon commands from the host via the BD-host interface or due to undervoltage condi-
tions. The host command has lower priority than the transition forced by an undervoltage condition which has the
highest priority.
A detected undervoltage at VCC or VIO forces the BD from BD_Normal to BD_Standby.
The host signal for the transition BD_Normal to BD_Standby is a valid SPI command.
The host signal for the transition BD_Standby to BD_Normal is a valid SPI command or a low-high transition at the
pin SCSN. The duration of the low phase is dScsnLow at least. This is a simplified hard wired method to switch the
BD in the BD_Normal state if the SPI host interface is absent.
The transitions are depicted in the following operation state diagram.
4.1.3.3 Operation mode transitions state diagram
Figure 6: E910.54 operation mode state diagram
ELMOS Semiconductor AG
1) low to high transition after a low phase (minimum dScsnLow, see 3.3)
transition
0
1
2
VCC power on
SPI command (Goto_Normal bit = ‘1’) or
pulse at SCSN with low duration ≥dScsnLow
1)
SPI command (Goto_Normal bit = ‘0’) or
VCCOK=0 or VIOOK=0
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Data sheet
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0
1
conditions
BD_Normal
BD_Standby
2
QM-No.: 25DS0004.00 2010-02-03
E910.54