P
R
E
L
I
M
I
N
A
R
Y
I
N
F
O
R
M
A
T
I
O
N
XpressFlow-2020 Series –
Ethernet Switch Chipset
Pin No(s).
Symbol
TTL I/O-TS
EA218E
8-Port 10Mb Ethernet Access Controller
Type
8mA
Name and Functions
Local Memory Bus – Data Bit [31:0]
Control Buffer Memory Interface
L_D[31:0]
M4,N2,L3,M1,M2,L1,K3,
L2,K4,K1,J3,K2,J1,J2,
H3,H1,H2,G3,G1,G2,F1,F3,F
2,E1,E3,E2,D1,D3,D2,C1,C2,
B1
A6,B6,C8,A7,D8,D7,C9,
L_A[18:2]
A8,B8,A9,C10,B9,D10,
A10,C11,B10,A11
C7
L_A[19] /
L_OE[3]#
D5,A5,A3
L_OE[2:0]#
D7,E4,B5,C4
L_WE[3:0]#
C6,B4,A4,C5
L_BWE[3:0]#
B3
L_ADSC#
G4
L_CLK
Ethernet Access Port cont. [7:0]
AF20,AE17,AD12,AD9,
T[7:2]_RXD
AC2,T25
AC25,AF6
T[1:0]_RXD
AD19,AD16,AE14,AF10,AC2 T[7:2]_RXC
1U24
AC24,AE7
T[1:0]_RXC
AF18,AD14,AE12,AF8,
T[7:0]_TXC
W2,AA25,AE22,AD1
AE19,AF15,AF12,AD8,
T[7:2]_TXEN
W1,AA24
AF22,AF2
T[1:0]_TXEN
AE20,AF16,AF13,AE10,
T[7:2]_TXD
Y1,W25
AF23,AE4
T[1:0]_TXD
AD18,AD15,AE13,AF9,
T[7:2]_LPBK
Y2,Y26
AE23,AF3
T[1:0]_LPBK
AF19,AE16,AD11,AE9,
T[7:2]_FD
V3,AA26
AD21,AE3
T[1:0]_FD
AD17,AE15,AF11,AE8,
T[7:2]_COL
V1,AB26
AD20,AC23
T[1:0]_COL
AE18,AD13,AD10,AD7,
T[7:2]_CRS
U3,AB24,
AF21,AD2
T[1:0]_CRS
AF17,AF14,AE11,AF7,
T[7:2]_LNK
V2,AB25,
AE21,AB3
T[1:0]_LNK
CMOS Output
8mA
Local Memory Bus – Address Bit [17:2]
CMOS Output
CMOS Output
CMOS Output
CMOS Output
CMOS Output
CMOS Output
TTL In (5VT)
TTL In (5VT)
TTL In (5VT)
TTL In (5VT)
TTL In (5VT)
CMOS Out
CMOS Output
CMOS Out
CMOS Output
CMOS Out
CMOS Output
CMOS Out
CMOS Output
TTL In (5VT)
TTL In (5VT)
TTL In (5VT)
TTL In (5VT)
TTL In (5VT)
TTL In (5VT)
8mA
2mA
2mA
8mA
8mA
8mA
Local Memory Bus – Address Bit [19] or Memory
Read Chip Select [3]
Local Memory Read Chip Select [2:0]
Local Memory Write Chip Select [3:0]
Local Memory Byte Write Enable, Byte [3:0]
Local Memory Controller Address Status
Local Memory Clock input
Receive Data – (one for each 10Mbps Serial In-
terface Port)
Receive Clock – (one for each 10Mbps Serial In-
terface Port)
Transmit Clock – (one for each 10Mbps Serial In-
terface Port)
Transmit Enable – (one for each 10Mbps Serial
Interface Port)
Transmit Data – (one for each 10Mbps Serial In-
terface Port)
Loop Back Enable – (one for each 10Mbps Serial
Interface Port)
Full Duplex Mode – (one for each 10Mbps Serial
Interface Port)
Collision Detected – (one for each 10Mbps Serial
Interface Port)
Carrier Sense – (one for each 10Mbps Serial In-
terface Port)
Link Status – (one for each 10Mbps Serial Inter-
face Port)
4mA
4mA
2mA
2mA
© 1998
Zarlink Semiconductor, Inc.
5
Rev.2.1 – February, 1999
ZARLINK [ ZARLINK SEMICONDUCTOR INC ]
