Panasonic KX-FLB852CX Service Manual page 183

1. Ethernet Controller (IC901)
The IEEE 802.3 Physical Layer (PHY) and Media Access Control (MAC) function
Memory Management Unit(MMU) allocates memory and transmit and receive packet queues.
The system bus interface
Serial EEPROM Interface
Clock Generator Block
2. EEPROM (IC900)
Store the MAC address.
3. RJ45 connector Module (CN900)
RJ45 with transformer and LED
4. Digital connector (CN901)
For connection to digital unit. (16bit data bus)
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KX-FLB852CX / KX-FLB852CXS