lan9215i Standard Microsystems Corp., lan9215i Datasheet - Page 15

• Manufacturer Part Number: lan9215i
• Description: Lan9215i 16-bit Non-pci 10/100 Ethernet Controller With Hp Auto-mdix And Industrial Temperature Support
• Manufacturer: Standard Microsystems Corp.

16-bit Non-PCI 10/100 Ethernet Controller with HP Auto-MDIX and Industrial Temperature Support
Datasheet
SMSC LAN9215i
2.1
SPEED_SEL
Host Address
PHY External Bias
Read Strobe
Write Strobe
FIFO Select
Chip Select
Host Data
Interrupt
Request
NAME
Resistor
0
1
NAME
TPO+
TPO-
TPI+
TPI-
Note: The pin names for the twisted pair pins shown above apply to a normal connection. If HP Auto-
Pin List
MDIX is enabled and a reverse connection is detected, or a reverse connection is manually
selected, the input pins become outputs, and vice-versa, as indicated in the descriptions.
FIFO_SEL
SYMBOL
D[15:0]
A[7:1]
100Mbps
nWR
nRD
nCS
IRQ
10Mbps
SPEED
SYMBOL
EXRES1
TPO+
TPO-
TPI+
TPI-
BUFFER
O8/OD8
Table 2.1 Host Bus Interface Signals
Table 2.2 Default Ethernet Settings
TYPE
I/O8
Table 2.3 LAN Interface Signals
IS
IS
IS
IS
IS
BUFFER
TYPE
AO
AO
AI
AI
AI
DEFAULT ETHERNET SETTINGS
DATASHEET
PINS
16
#
7
1
1
1
1
1
Half-Duplex
Half-Duplex
DUPLEX
PINS
NUM
15
1
1
1
1
1
Bi-directional data port.
7-bit Address Port. Used to select Internal CSR’s and
Active low strobe to indicate a read cycle.
When driven high all accesses to the LAN9215i are to
TX and RX FIFOs.
Active low strobe to indicate a write cycle. This signal,
qualified with nCS, is also used to wakeup the
LAN9215i when it is in a reduced power state.
Active low signal used to qualify read and write
operations. This signal qualified with nWR is also used
to wakeup the LAN9215i when it is in a reduced power
state.
Programmable Interrupt request. Programmable
polarity, source and buffer types.
the RX or TX Data FIFOs. In this mode, the A[7:3]
upper address inputs are ignored.
Transmit Positive Output (normal)
Receive Positive Input (reversed)
Transmit Negative Output (normal)
Receive Negative Input (reversed)
Receive Positive Input (normal)
Transmit Positive Input (reversed)
Receive Negative Input (normal)
Transmit Negative Output (reversed)
Must be connected to ground through a 12.4K
ohm 1% resistor.
DESCRIPTION
DESCRIPTION
AUTO NEG.
Disabled
Enabled
Revision 2.3 (08-06-08)