LAN9117_08 Datasheet, PDF (21/136 Pages) SMSC Corporation – High Performance Single-Chip 10/100 Non-PCI Ethernet Controller

High Performance Single-Chip 10/100 Non-PCI Ethernet Controller
Datasheet
Table 2.6 MII Interface Signals (continued)
PIN
NO.
NAME
SYMBOL
BUFFER
TYPE
NUM
PINS
DESCRIPTION
31 Management Data
Clock
MDC
O8 (PD)
1
Management Data Clock: When
SMI_SEL = 1, this pin is the MII
management data clock. When
SMI_SEL=0, this pin is driven low.
See Note 2.2.
Note:
See Section 5.3.9,
"HW_CFG—Hardware
Configuration Register" for
more information on
SMI_SEL.
Note 2.2 The external SMI port is selected when SMI_SEL = 1. When SMI_SEL = 0, MDIO is tri-
stated and MDC is driven low.
SMSC LAN9117
21
DATASHEET
Revision 1.5 (07-11-08)