Modem User Manual

66
I/O SPACE - BANK3
OFFSET NAME TYPE SYMBOL
8 MANAGEMENT INTERFACE READ/WRITE MGMT
HIGH
BYTE
nXNDE
C
IOS2 IOS1 IOS0
0 0 1 1
LOW
BYTE
MDOE MCLK MDI MDO
0 0 1 1 0 0 0 0
nXNDEC - Read only bit reflecting the status of
the nXENDEC pin.
IOS0-IOS2 - Read only bits reflecting the status of
the IOS0-IOS2 pins.
MDO - The value of this bit drives the EEDO pin
when MDOE=1.
MDI - Reads the value of the EEDI pin.
MDCLK - The value of this bit drives the EESK pin
when MDOE=1.
MDOE - When this bit is high pins EEDO EECS
and EESK will be used for transceiver
management functions, otherwise the pins assume
the EEPROM values.
MDOE=0 MDOE=1
EEDO Serial EEPROM Data Out Bit MDO
EESK Serial EEPROM Clock Bit MCLK
EECS Serial EEPROM Chip Select 0