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
EA218
6+2 Ports 10Mb Ethernet Access Controller
Pin No(s).
Symbol
Type
Name and Functions
Control Buffer Memory Interface
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
L_D[31:0]
TTL I/O-TS
ꢂ
8mA
Local Memory Bus – Data Bit [31:0]
A6,B6,C8,A7,D8,D7,C9,
A8,B8,A9,C10,B9,D10,
A10,C11,B10,A11
L_A[18:2]
CMOS Output
CMOS Output
8mA
8mA
Local Memory Bus – Address Bit [17:2]
C7
L_A[19] /
L_OE[3]#
Local Memory Bus – Address Bit [19] or Memory
Read Chip Select [3]
D5,A5,A3
D7,E4,B5,C4
C6,B4,A4,C5
B3
L_OE[2:0]#
L_WE[3:0]#
L_BWE[3:0]#
L_ADSC#
L_CLK
CMOS Output
CMOS Output
CMOS Output
CMOS Output
CMOS Output
2mA
2mA
8mA
8mA
8mA
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
G4
Ethernet Access Port cont. [7:0]
AF20,AE17,AD12,AD9,
AC2,T25
T[7:2]_RXD
TTL In (5VT)
ꢂ
ꢂ
Receive Data – (one for each 10Mbps Serial In-
terface Port)
AC25,AF6
T[1:0]_RXD
TTL In (5VT)
TTL In (5VT)
AD19,AD16,AE14,AF10,AC2 T[7:2]_RXC
1U24
Receive Clock – (one for each 10Mbps Serial In-
terface Port)
AC24,AE7
T[1:0]_RXC
T[7:0]_TXC
TTL In (5VT)
TTL In (5VT)
AF18,AD14,AE12,AF8,
W2,AA25,AE22,AD1
Transmit Clock – (one for each 10Mbps Serial In-
terface Port)
AE19,AF15,AF12,AD8,
W1,AA24
T[7:2]_TXEN
CMOS Out
ꢂ
ꢂ
ꢂ
ꢂ
ꢂ
ꢂ
ꢂ
4mA
4mA
2mA
2mA
Transmit Enable – (one for each 10Mbps Serial
Interface Port)
AF22,AF2
T[1:0]_TXEN
T[7:2]_TXD
CMOS Output
CMOS Out
AE20,AF16,AF13,AE10,
Y1,W25
Transmit Data – (one for each 10Mbps Serial In-
terface Port)
AF23,AE4
T[1:0]_TXD
CMOS Output
AD18,AD15,AE13,AF9,
Y2,Y26
T[7:2]_LPBK ꢁ CMOS Out
Loop Back Enable – (one for each 10Mbps Serial
Interface Port)
AE23,AF3
T[1:0]_LPBK ꢁ CMOS Output
AF19,AE16,AD11,AE9,
V3,AA26
T[7:2]_FD
ꢁ CMOS Out
Full Duplex Mode – (one for each 10Mbps Serial
Interface Port)
AD21,AE3
T[1:0]_FD
ꢁ CMOS Output
AD17,AE15,AF11,AE8,
V1,AB26
T[7:2]_COL
TTL In (5VT)
Collision Detected – (one for each 10Mbps Serial
Interface Port)
AD20,AC23
T[1:0]_COL
T[7:2]_CRS
TTL In (5VT)
TTL In (5VT)
AE18,AD13,AD10,AD7,
U3,AB24,
Carrier Sense – (one for each 10Mbps Serial In-
terface Port)
AF21,AD2
T[1:0]_CRS
TTL In (5VT)
AF17,AF14,AE11,AF7,
V2,AB25,
T[7:2]_LNK ꢁ TTL In (5VT)
Link Status – (one for each 10Mbps Serial Inter-
face Port)
AE21,AB3
T[1:0]_LNK ꢁ TTL In (5VT)
© 1998 Zarlink Semiconductor, Inc.
5
Rev. 2.1- February, 1999
ZARLINK [ ZARLINK SEMICONDUCTOR INC ]
