SMC91C100 Datasheet, PDF (10/83 Pages) List of Unclassifed Manufacturers – FEAST Fast Ethernet Controller

PIN NO.
20,21,
22,24
198
196
192
11
204
7
NAME
Receive
Data
Manage-
ment Data
Input
Manage-
ment Data
Output
Manage-
ment Clock
Receive
Error
Bias
Resistor
nChip
Select
Output
DESCRIPTION OF PIN FUNCTIONS
BUFFER
SYMBOL
TYPE
DESCRIPTION
RXD0-
RXD3
I
Inputs. Received Data nibble from MII PHY.
These pins are ignored when MIISEL is low.
MDI
IP
MII management data input.
MDO
O4
MII management data output.
MCLK
RX_ER
RBIAS
nCSOUT
O4
MII management clock.
ID
Analog
Input
O4
Input. Indicates a code error detected by PHY.
Used by the SMC91C100 to discard the packet
being received. The error indication reported
for this event is the same as a bad CRC
(Receive Status Word bit 13). This pin is
ignored when MIISEL is low.
A bias resistor is connected between this pin
and ground. Nominal value is TBD.
Output. Chip Select provided for mapping of
PHY functions into SMC91C100 decoded
space. Active on accesses to SMC91C100's
eight lower addresses when the BANK
SELECTED is 7.
10