LAN9217_07 Datasheet, PDF (15/137 Pages) SMSC Corporation – 16-bit High-Performance Single-Chip 10/100 Ethernet Controller with HP Auto-MDIX

16-bit High-Performance Single-Chip 10/100 Ethernet Controller with HP Auto-MDIX
Datasheet
PIN NO.
43-46,49-
53,56-59,62-
64
12-18
NAME
Host Data
Host Address
92
Read Strobe
93
Write Strobe
94
Chip Select
72
Interrupt
Request
76
FIFO Select
Table 2.1 Host Bus Interface Signals
SYMBOL
D[15:0]
BUFFER
#
TYPE PINS
DESCRIPTION
I/O8
16 Bi-directional data port.
A[7:1]
IS
nRD
IS
nWR
IS
nCS
IS
IRQ
O8/OD8
FIFO_SEL
IS
7 7-bit Address Port. Used to select
Internal CSR’s and TX and RX FIFOs.
1 Active low strobe to indicate a read
cycle.
1 Active low strobe to indicate a write
cycle. This signal, qualified with nCS, is
also used to wakeup the LAN9217
when it is in a reduced power state.
1 Active low signal used to qualify read
and write operations. This signal
qualified with nWR is also used to
wakeup the LAN9217 when it is in a
reduced power state.
1 Programmable Interrupt request.
Programmable polarity, source and
buffer types.
1 When driven high all accesses to the
LAN9217 are to the RX or TX Data
FIFOs. In this mode, the A[7:3] upper
address inputs are ignored.
SPEED_SEL
0
1
SPEED
10Mbps
100Mbps
Table 2.2 Default Ethernet Settings
DEFAULT ETHERNET SETTINGS
DUPLEX
Half-Duplex
Half-Duplex
AUTO NEG.
Disabled
Enabled
SMSC LAN9217
15
DATASHEET
Revision 1.8 (06-06-07)