MTD655 Datasheet, PDF (5/18 Pages) List of Unclassifed Manufacturers – 5 Port 10M/100M Hub With 2 port Switch

MYSON
TECHNOLOGY
MTD655
Name
RXD4_0
RXD4_1
TXEN4
TXD4_0
TXD4_1
RMII Port Interface Pins (port1 ~port4)
Pin Number I/O
Descriptions
57
I Port4 RMII receive data bit_0.
58
I Port4 RMII receive data bit_1.
56
O Port4 RMII transmit enable signal.
55
O Port4 RMII transmit data bit_0.
54
O Port4 RMII transmit data bit_1.
High Speed Asynchronous SRAM Interface Pins
Name
WEB
OEB
D[7:0]
Pin Number I/O
Descriptions
94
O ASRAM control pin for write (low active).
106
O ASRAM control pin for read (low active).
111,113,115, I/O ASRAM data bus
118,120,119,
116,114
A[16:0]
90,91,93,96, O ASRAM address bus
95,102,108,
100,98,97,99
,101,104,107
,109,110,112
Note: Asynchronous SRAM acess time: 10/12 ns (max)
Name
IMASTER
10M Inter-Bus Interface pins
Pin Number
67
I/O
I Master hub selection:
Descriptions
when high: means hub internal inter_bus arbiter is enabled and hub
internal two_port switch is well conneted to 10M_hub core and
100M_hub core .
when low: means hub internal inter_bus arbiter is disabled and hub
internal two_port switch is not connected to 10M_hub core and
100M_hub core.
IACKB10
I/O 10M Inter-Bus port access acknowledge signal (low active). For master
84
hub, this pin is output; for slave hub is input, or while EXT_ARB
jumper was set to “1”, this pin is input from an external arbitration
device.
ICOLB10
I/O 10M Inter-Bus collision signal (low active). For master hub, this pin can
85
output multi hub collision event to inform all slave hub ; for slave hub,
this pin is an input, or while EXT_ARB jumper was set to “1”, this pin
is input from an external arbitration device.
IREQ10_IN0
88
I 10M Inter-Bus port access request input.
IREQ10_IN1
87
I 10M Inter-Bus port access request input.
IREQ10_IN2
86
I 10M Inter-Bus port access request input.
IREQ10_OUT
89
O 10M Inter-Bus port access request output.
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MTD655 Revision 2.0 17/03/2000