TNETX15VE Datasheet, PDF (23/113 Pages) Texas Instruments – VLAN-ENGINE ADDRESS-LOOKUP DEVICE

TNETX15VE
VLAN-ENGINE ADDRESS-LOOKUP DEVICE
SPWS028B – APRIL 1997 – REVISED SEPTEMBER 1997
mode-control status register, control at 0x08–0x09 (DIO)
BYTE 1
BIT
BYTE 0
15
14
13
12
11
10
9
8
7
6
5
4
3
2
1
0
RESET LOAD START INITD NEEPM NAUTO
Reserved
NIOB Reserved NCRC MIRR
Reserved
Initial Values After Reset
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
Values With No EEPROM Detected
0
0
0
0
1
0
0
0
0
0
0
0
0
0
0
0
Values When Auto-Loading Fails
1
0
0
0
1
0
0
0
0
0
0
0
0
0
0
0
The control register is automatically loaded from an EEPROM when the RESET terminal is asserted low, when
the DIO address high register is written with 0x40, or when the LOAD bit is set. Only selected bits in this register
are loaded from the EEPROM. RESET and LOAD bits are not loaded to prevent automatic loading loops. The
two status bits, INITD and NEEPM, also are not loadable. If automatic loading fails due to EEPROM malfunction
or CRC error, the control register RESET bit is set.
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