MC33989PEG Freescale Semiconductor, MC33989PEG Datasheet - Page 34

• Manufacturer Part Number: MC33989PEG
• Description: SBC-HS
• Manufacturer: Freescale Semiconductor

FUNCTIONAL DEVICE OPERATION
LOGIC COMMANDS AND REGISTERS
Table 16. CAN High Speed Transceiver Modes
Table 17. CAN Status Bits
for the first time after V2 turn ON. To clear the CUR bit, follow this procedure:
• Turn V2 ON (SBC in Normal mode and V2 above V2 threshold) the CAN interface must be set into CAN Sleep
• Return to CAN NORMAL
Input/Output Control Register (IOR)
Table 18. IOR Register
Table 19. IOR Control Bits
bit to 1. Error bits are latched in the Input/Output Registers (IOR). See
Table 20. IOR Status Bits
Wake-up Input Register (WUR)
and for waking up the SBC in Sleep or Stop modes. See
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33989
Error bits are latched in the CAN registers. Bit (1) CUR is set to 1 when the CAN interface is programmed into CAN NORMAL
Table 18
When HS1 is turned OFF due to an over temperature condition, it can be turned ON again by setting the appropriate control
The local wake-up inputs, L0, L1, L2, and L3 can be used in both Normal and Standby modes as port expander, as well as
Reset Condition
Reset Value
Status Bits
x
x
VSUPLOW
$011B
Status Bit
CANWU
THERM
CUR(1)
IOR
V2LOW
DEBUG
HS1ON
HS1OT
TXF
provides data about HS1 control in Normal and Standby modes, while
0
1
1
0
CAN Wake-up Occurred
Permanent Dominant TX
CAN Transceiver in Current Limitation
CAN Transceiver in Thermal Shutdown
W
R
HS1 OFF, in Normal and Standby Modes
HS1 ON, in Normal and Standby Modes
V2 Below 4.0 V
High Side 1 Over-temperature
V
If Set, SBC Accepts Command to go to Debug Modes (No WD)
SUP
Below 6.1 V
1
1
V2LOW
D3
—
—
—
CAN Sleep and CAN Wake-up Disable
CAN Sleep and CAN Wake-up Enable
Table
21.
HS1ON
HS1OT
POR
D2
0
Description
Table
Description
HS1 State
20.
Table 19
VSUPLOW
Analog Integrated Circuit Device Data
D1
—
—
—
provides control bit data.
Freescale Semiconductor
DEBUG
D0
—
—
—