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M-Station Baseboard
4.2
CAN Transceiver
The CAN transceiver in an 8-pin SO package (Linear Technology LT1796CS8) and its DB9 connector
are optional features whose footprints are provided on the M-Station. The CAN transceiver inputs and
outputs are connected to row 0.
Pin
1
2
3
2
4.3
I
C and User EEPROM
The 2 KB user EEPROM is installed in an 8-pin socket (Microchip Technology 24LC16B/P (2 KB);
DigiKey part no. 24LC16B/P-ND). EEPROM of other sizes also can be used in place.
Row
2
2
The SCL and SDA signals from the CPU, which support I
and 10. To connect the EEPROM, insert jumpers between the corresponding pins of rows 1 and 2.
Connect the CPU's port signals to row 1 pins 9 and 10 so that I
purpose CPU port can be implemented.
To enable EEPROM operations up to 400 kHz, the M-Station has 2 kΩ resistors to pull up the SCL and
SDA lines to V
4.4
Seven-Segment LEDs
The seven-segment LEDs are connected to row 2[17:24] for LED1 and row 2[25:32] for LED2,
respectively. Connect the selected I/O ports from the micro-board to row 1[17:24] and row 1[25;32]
and then insert jumpers between corresponding rows 1 and 2 so that the CPU's I/O port signals can
drive seven-segment LEDs.
Can Transceiver Inputs and Outputs
Table 7.
Signal
TxD
RS
RxD
Connection to EEPROM from Row 2
Table 8.
Pin
Signal
9
SCL
10
SDA
for the 24LC16B/P.
DE
2
C functions, are connected to row 1 pins 9
2
C emulation through a general-
14
Description
CAN transceiver
CAN transceiver
CAN transceiver
Description
Clock for EEPROM
Bidirectional data for EEPROM
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