MOD5234-100IR NetBurner Inc, MOD5234-100IR Datasheet - Page 461

• Manufacturer Part Number: MOD5234-100IR
• Description: MOD5234 10/100 ETHERNET MODULE
• Manufacturer: NetBurner Inc
• Type: Controllers & Processorsr

Specifications of MOD5234-100IR

• Interface: I²C, SPI, UART
• Voltage - Supply: 2.5V
• Mounting Type: Surface Mount
• Package / Case: Module
• Product: Modules
• Lead Free Status / RoHS Status: Lead free / RoHS Compliant
• Data Format: -
• Baud Rates: -
• Lead Free Status / Rohs Status: Lead free / RoHS Compliant
• Other names: Q4483564

21.3.2 Register Descriptions
This section describes the registers in the FlexCAN modules.
Programming the FlexCAN control registers is typically done during system initialization, prior
to the FlexCAN becoming synchronized with the CAN bus. The configuration registers can be
changed after synchronization by halting the FlexCAN module. This is done when the user sets
the HALT bit in the FlexCAN module configuration register (CANMCRn). The FlexCAN
responds by setting the CANMCRn[NOTRDY] bit.
21.3.2.1 FlexCAN Configuration Register (CANMCRn)
CANMCRn defines global system configurations, such as the module operation mode and
maximum message buffer configuration. Most of the fields in this register can be accessed at any
time, except the MAXMB field, which should only be changed while the module is in freeze mode.
Freescale Semiconductor
Reg Addr
Reset
Reset
W
W
R MDIS FRZ
R
31
15
1
0
0
The FlexCAN has no hard-wired protection against invalid bit/field
programming within its registers. Specifically, no protection is
provided if the programming does not meet CAN protocol
requirements.
30
14
1
0
0
Figure 21-4. FlexCAN Configuration Register (CANMCRn)
29
13
0
0
0
0
HALT NOT
28
12
1
0
0
RDY
27
11
1
0
0
IPSBAR + 0x1C_0000 (CAN0); 0x1F_0000 (CAN1)
MCF5235 Reference Manual, Rev. 2
26
10
0
0
0
0
SOFT
RST
25
0
0
0
9
NOTE
ACK
FRZ
24
0
0
0
8
SUPV
23
1
0
0
7
22
0
0
0
0
6
21
0
0
0
0
5
LPM
ACK
20
1
0
0
4
Memory Map/Register Definition
19
0
0
1
3
18
MAXMB
0
0
2
1
17
0
0
1
1
16
0
0
1
0
21-7