MEA-208 Zarlink Semiconductor, Inc., MEA-208 Datasheet - Page 18

• Manufacturer Part Number: MEA-208
• Description: 6+2 Ports Ethernet Access Controller
• Manufacturer: Zarlink Semiconductor, Inc.

XpressFlow-2020 Series –
Ethernet Switch Chipset
2.4 10Mb Serial Interface for Port 0 through 7
t Fully compliant with IEEE 802.3 10M bit Serial Interface Stan-
2.4.1 Pin Description
© 1998 Vertex Networks, Inc.
1999
dard for connecting with external 10Mbps Ethernet Physical
Layer Transceiver
TXEN
TXC
TXD
Note:
Tn_RXD
Tn_RXC
Tn_TXC
Tn_TXEN
Tn_TXD
Tn_LPBK
Tn_FD
Tn_COL
Tn_CRS
Tn_LNK
Symbol
“n” is the port number [7:0]
•
P
R
These signals have programmable output polarity.
•
•
•
E
100 nsec
100 nsec
L
CMOS
Output
CMOS
Output
CMOS
Output
CMOS
Output
TTL In
TTL In
TTL In
TTL In
TTL In
TTL In
Type
(5VT)
(5VT)
(5VT)
(5VT)
(5VT)
(5VT)
I
M
Name and Functions
Receive Data – (one for each 10M bit Serial Interface Port) a receive data stream.
Receive Clock – (one for each 10M bit Serial Interface Port) from external phy for sampling the
receive data from Tn_RXD input
Transmit Clock – (one for each 10M bit Serial Interface Port) a continuous clock input with
35% to 65% duty cycles.
Transmit Enable – (one for each 10M bit Serial Interface Port)
Transmit Data – (one for each 10M bit Serial Interface Port) a transmit data stream.
Loop Back Enable – (one for each 10M bit Serial Interface Port) The polarity of this signal is
programmable via Port Configuration Register
Full Duplex Mode – (one for each 10M bit Serial Interface Port) The polarity of this signal is
programmable via Port Configuration Register
Collision Detected – (one for each 10M bit Serial Interface Port)
Carrier Sense – (one for each 10M bit Serial Interface Port)
Link Status – (one for each 10M bit Serial Interface Port) The polarity of this signal is pro-
grammable via Port Configuration Register
I
10M bit Serial Interface – Transmit Timing
N
A
R
Y
6+2
I
18
t Supports 10Mbps 10BaseT serial interface
t Supports both half and full duplex operation
N
Ports 10Mb Ethernet Access Controller
F
O
R
M
A
T
I
O
N
Rev. 2.1- February,
EA218