phyCARD-M [PCA-A-M1-xxx]
50
©
PHYTEC Messtechnik GmbH 2010 L-750e_1
9.4.2
MAC Address
In a computer network such as a local area network (LAN), the MAC
(Media Access Control) address is a
unique
computer hardware
number. For a connection to the Internet, a table is used to convert the
assigned IP number to the hardware's MAC address.
In order to guarantee that the MAC address is unique, all addresses are
managed in a central location. PHYTEC has acquired a pool of MAC
addresses. The MAC address of the phyCARD-M is located on the bar
code sticker attached to the module. This number is a 12-digit HEX
value.
9.5
I
2
C Interface
The Inter-Integrated Circuit (I
2
C) interface is a two-wire, bidirectional
serial bus that provides a simple and efficient method for data
exchange among devices. The i.MX35 contains three identical and
independent I
2
C modules. The interface of the third module is
available on the phyCARD-Connector., whereas the first module
connects to the on-board EEPROM (refer to
section 7.3
) and the
Power Management IC at U1 (refer to
section 5
). The following table
lists the I
2
C port on the phyCARD-Connector:
P
IN
#
S
IGNAL
I/O
SL
D
ESCRIPTION
X2A17 X_I2C3_SCL
O
VDD_3V3
I2C Clock Output
X2B17 X_I2C3_SDA I/O
VDD_3V3 I2C
Data
Table 19:
I
2
C Interface Signal Location
