User guide

C M M - 52259 J U N E 1 1 , 2 0 1 0
U S E R G U I D E
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while supporting communications rates to 1 Mbaud. The PHY provides slope control reducing
radio frequency interference (RFI) while providing a wide common-mode range input protecting
against electro-magnetic interference (EMI). The PHY also provides short-circuit protection to
battery and ground. Refer to the PCA82C250 data sheet for further details.
The FlexCAN module in the MCF52259 provides support for the CAN protocol. The FlexCAN
module supports standard and extended identifier (ID) message formats specified in the CAN
protocol specification, revision 2.0, part B. The CAN module is disabled out of reset by default
and must be configured by user application before use.
I/O CONNECTORS
The CMM-52259 applies several IO connectors arranged around the perimeter of the board
providing access to most MCU signals. The BDM_PORT header is dedicated to development
access. The figures below show signal assignment for each IO connector. With the exception
of the BDM_PORT header at J4, the IO headers are not populated in default configurations.
Figure 7: MCU_PORT IO Header
MCU_PORT – J1
I2C_SCL0/UTXD2/PAS0
1
2
I2C_SDA0/URXD2/PAS1
FEC_TXER/PTJ7
3
4
TCLK/PSTCLK/CLKOUT/FB_CLK
RSTI*
5
6
RSTO*
UCTS0*/USB_BUSE/PUA3
7
8
UCTS2*/I2C_SCL1/USB_BUSCHG/PUC3
URTS0*/USB_VBUSD/PUA2
9
10
URTS2*/I2C_SDA1/USB_VBUSDIS/PUC2
NC
11
12
FB_AD19/PTG3
FB_AD18/PTG2
13
14
FB_AD17/PTG1
FB_AD16/PTG0
15
16
NC
NC
17
18
NC
DTIN3/DTOUT3/PWM6/PTC3
19
20
GPT3/ICOC3/PWM7/PTA3
DTIN2/DTOUT2/PWM4/PTC2
21
22
GPT2/ICOC2/PWM1/PTA2
DTIN1/DTOUT1/PWM2/PTC1
23
24
GPT1/ICOC1/PWM3/PTA1
DTIN0/DTOUT0/PWM0/PTC0
25
26
GPT0/ICOC0/PWM1/PTA0
UTXD1/I2C_SCL1/PUB0
27
28
URXD1/12C_SDA1/PUB1
UCTS1*/SYNCA/URSC2/PUB3
29
30
URTS1*/SYNCB/UTXD2/PUB2
UTXD0/PUA0
31
32
URXD0/PUA1
URXD2/CANRX/PUC1
33
34
UTXD2/CANTX/PUC0
QSPI_CS2/SYNCB/USB_DM_PDOWN/PQS5
35
36
QSPI_CS0/I2C_SDA0/UCTS1/PQS3
QSPI_CLK/I2C_SCL0/URTS1/PQS2
37
38
QSPI_DIN/I2C_SDA1/URXD1/PQS1
QSPI_DOUT/I2C_SCL1/UTXD1/PQS0
39
40
IRQ7*/PNQ7
QSPI_CS3/SYNCA/USB_DP_PDOWN/PQS6
41
42
IRQ5*/FEC_MDC/PNQ5
NC
43
44
IRQ3*/FEC_MDIO/PNQ3
NC
45
46
IRQ1*/USB_ALTCLK/PNQ1
GND
47
48
+3.3V
CAN_HI
49
50
CAN_LO