DM9016
3-port switch with Processor Interface
5.3.2 RMII Interfaces
Pin No. Pin Name
I/O
Description
55
56
58,59
60,61
63
MDC
MDIO
TXD2_3~0
TXD2_1~0
TXE2
O,PD
I/O
O,PD
O,PD
MII Serial Management Data Clock
MII Serial Management Data
Reserved
RMII Transmit Data
RMII Transmit Enable
O,PD
64
TXC2
O,PD
Reserved
65
66
67
68
70
71,72
73,74
CRS2
COL2
I
I
I
I
I
I
I
RMII CRS_DV
Reserved, tie to ground in application.
Reserved, tie to ground in application.
50MHz reference clock.
Reserved, tie to ground in application.
Reserved, tie to ground in application.
RMII Receive Data
RXER2
RXC2
RXDV2
RXD2_3~2
RXD2_3~0
5.3.3 Reverse MII Interfaces
Pin No.
55
56
Pin Name
MDC
MDIO
I/O
O,PD
I/O
Description
Reserved
Reserved
58,59,60,61
TXD2_3~0
O,PD
Port 2 MII Transmit Data
4-bit nibble data outputs (synchronous to the TXC2)
Port 2 MII Transmit Enable
25MHz clock output
Port 2 carrier sense output when TXE2 orRXDV2
asserted
63
64
65
TXE2
TXC2
CRS2
O,PD
O
O
66
67
68
COL2
RXER2
RXC2
O
I
I
Port 2 collision output when TXE2 and RXDV2 asserted
Port 2 MII Receive Error
Port 2 MII Receive Clock
70
RXDV2
RXD2_3~0
I
I
Port 2 MII Receive Data Valid
Port 2 MII Receive Data
71,72,73,74
4-bit nibble data input (synchronous to RXC2)
5.4 EEPROM Interfaces
Pin No.
Pin Name
I/O
Description
49
50
EEDI
EEDO
I,PD
EEPROM Data In
O,PD EEPROM Data Out
This pin is used serially to write op-codes, addresses and
data into the EEPROM.
51
52
EECK
EECS
O,PD EEPROM Serial Clock
This pin is used as the clock for the EEPROM data transfer.
EEPROM Chip Selection.
O,PD
Preliminarydatasheet
DM9016-13-DS-P01
March 26, 2009
15
DAVICOM [ DAVICOM SEMICONDUCTOR, INC. ]
