Sharp FO IS125N - B/W Laser - All-in-One Service Manual page 105

2.3. LAN control block
LAN Control Block is composed with LAN controller LAN9118-
MT(IC800) and integrated magnetics LAN jack.
2.3.1 LAN9118-MT (IC800) Hardware description
General description
The SMSC LAN9118-MT integrated 10/100 MAC/PHY controller is a
peripheral chip that performs the function of translating parallel data
from a host controller into Ethernet packets. The LAN9118-MT Ether-
net MAC/PHY controller is designed and optimized to function in an
embedded environment. All communication is performed with pro-
grammed I/O transactions using the simple SRAM-like host interface
bus.
2.3.2 Description of pin functions
The diagram shown above, describes a typical system configuration of
the LAN9118-MT in a typical embedded environment.
The LAN9118-MT is a general purpose, platform independent, Ether-
net controller. The LAN9118-MT consists of four major functional
blocks. The four blocks are:
• 10/100 Ethernet PHY
• 10/100 Ethernet MAC
• RX/TX FIFOs
• Host Bus Interface (HBI)
Table 1 Host Bus Interface Signals
Table 2 Default Ethernet Setting
5 – 14
Table 2, "Default
Ethernet Settings", below.
FO-IS125N