118
Rigel-PJ1nx Training
Slide 118
MM PWB
Wired LAN
The CPU (IC9201) and the LAN-PHY (IC9603) are connected through the MII
(Media Independent Interface) that is an interface to be laid between the MAC
(media access control) layer and the physical layer in the LAN (Ethernet) of the
10M-or 100M-bit/sec. CSMA/CD system stipulated by the IEEE802.3u Standard.
IC9603 is the LAN-PHY that works on a 25MHz quartz crystal oscillator (X9603),
and connected to the RJ-45 terminal (M9601) incorporated in the pulse
transformer. M9601 has a built-in LED that indicates the operating condition of
the LAN.LED control is carried out by IC9603.
¾
Green LED: In 100Base linkage: Lit
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Yellow LED: During data transmission: Unlit
The wired LAN makes it possible to perform network communication with the PC
when it is connected to the RJ-45 terminal.
