eZ80F915005MOD
eZ80F91 Mini Enet Module Product Specification
10
Onboard Component Description
I/O Connector
The I/O connector features 32 general-purpose 3.3 V CMOS I/O pins that can be
used as outputs or inputs interfacing to external logic. All I/Os are 5 V tolerant. Some
of the General-Purpose I/O pins support dual mode functions (SPI, Timer I/O,
UARTs and bit I/O with edge- or level-triggered interrupt functions on each pin). For
more information on eZ80F91 dual modes, please refer to the
eZ80F91 Product
Specification
(PS0192).
Peripheral Bus Connector
The peripheral bus connector features 24 pins that provide access to the eZ80F91
Mini Enet Module address bus and 8 pins that provide access to the module data
bus. For more information on eZ80F91 address and data buses, refer to the
eZ80F91 Product Specification
(PS0192).
Ethernet PHY and RJ45 Connector
The eZ80F91 Mini Enet Module contains a Micrel KS8721BL 10/100 Ethernet
PHY with Media Independent Interface (MII) and a HALO RJ45 with integrated
magnetics and two LEDs (transformer and common-mode chokes).
The eZ80F91 Mini Enet Module defaults to 10Mbps, which works in either a 100
Mbps or a 10 Mbps network. Software can also configure the PHY for 100Mbps or
autosense.
Ethernet LEDs
The Ethernet connection is provided by the HALO RJ45 connector. It contains two
green LEDs that are located next to each other on the eZ80F91 Mini Enet Module.
When PHY is receiving data, the left LED is on. When the PHY is transmitting
data, the right LED is on.
PS023602-0804
PRELIMINARY
Onboard Component Description
ZILOG [ ZILOG, INC. ]
