
TNETX3270
ThunderSWITCH 24/3 ETHERNET SWITCH
WITH 24 10-MBIT/S  PORTS AND 3 10-/100-MBIT/S  PORTS
SPWS043B ± NOVEMBER 1997 ± REVISED APRIL 1999
Table 2. Detailed DIO Register Map
BYTE 3 | 
  | BYTE 2  | 
  | BYTE 1  | 
  | BYTE 0  | DIO | 
  | 
  | 
  | ADDRESS | ||||
  | 
  | 
  | 
  | 
  | 
  | 
  | |
  | 
  | 
  | 
  | 
  | 
  | 
  | 
  | 
  | Port1control  | 
  | 
  | Port0control  | 0x0000  | ||
  | 
  | 
  | 
  | 
  | 
  | 
  | 
  | 
  | Port3control  | 
  | 
  | Port2control  | 0x0004  | ||
  | 
  | 
  | 
  | 
  | 
  | 
  | 
  | 
  | Port5control  | 
  | 
  | Port4control  | 0x0008  | ||
  | 
  | 
  | 
  | 
  | 
  | 
  | 
  | 
  | Port7control  | 
  | 
  | Port6control  | 0x000C  | ||
  | 
  | 
  | 
  | 
  | 
  | 
  | 
  | 
  | Port9control  | 
  | 
  | Port8control  | 0x0010  | ||
  | 
  | 
  | 
  | 
  | 
  | 
  | 
  | 
  | Port11control  | 
  | 
  | Port10control  | 0x0014  | ||
  | 
  | 
  | 
  | 
  | 
  | 
  | 
  | 
  | Port13control  | 
  | 
  | Port12control  | 0x0018  | ||
  | 
  | 
  | 
  | 
  | 
  | 
  | 
  | 
  | Port15control  | 
  | 
  | Port14control  | 0x001C  | ||
  | 
  | 
  | 
  | 
  | 
  | 
  | 
  | 
  | Port17control  | 
  | 
  | Port16control  | 0x0020  | ||
  | 
  | 
  | 
  | 
  | 
  | 
  | 
  | 
  | Port19control  | 
  | 
  | Port18control  | 0x0024  | ||
  | 
  | 
  | 
  | 
  | 
  | 
  | 
  | 
  | Port21control  | 
  | 
  | Port20control  | 0x0028  | ||
  | 
  | 
  | 
  | 
  | 
  | 
  | 
  | 
  | Port23control  | 
  | 
  | Port22control  | 0x002C  | ||
  | 
  | 
  | 
  | 
  | 
  | 
  | 
  | 
  | Port25control  | 
  | 
  | Port24control  | 0x0030  | ||
  | 
  | 
  | 
  | 
  | 
  | 
  | 
  | 
  | Reserved  | 
  | 
  | Port26control  | 0x0034  | ||
  | 
  | 
  | 
  | 
  | 
  | 
  | 
  | 
  | Reserved  | 
  | 
  | Reserved  | 0x0038:0x003F  | ||
  | 
  | 
  | 
  | 
  | 
  | 
  | 
  | 
Reserved  | 
  | UnkVLANport  | 
  | Mirrorport  | 
  | Uplinkport | 0x0040  | 
  | 
  | 
  | 
  | 
  | 
  | 
  | 
  | 
  | Reserved  | 
  | 
  | Aging threshold  | 0x0044  | ||
  | 
  | 
  | 
  | 
  | 
  | 
  | 
  | 
  | 
  | Reserved  | 
  | 
  | 
  | 0x0048:0x004F  | |
  | 
  | 
  | 
  | 
  | 
  | 
  | |
  | 
  | Nlearnports  | 
  | 
  | 
  | 0x0050  | |
  | 
  | 
  | 
  | 
  | 
  | 
  | |
  | 
  | Txblockports  | 
  | 
  | 
  | 0x0054  | |
  | 
  | 
  | 
  | 
  | 
  | 
  | |
  | 
  | Rxuniblockports  | 
  | 
  | 
  | 0x0058  | |
  | 
  | 
  | 
  | 
  | 
  | 
  | |
  | 
  | Rxmultiblockports  | 
  | 
  | 
  | 0x005C  | |
  | 
  | 
  | 
  | 
  | 
  | 
  | |
  | 
  | Unkuniports  | 
  | 
  | 
  | 0x0060  | |
  | 
  | 
  | 
  | 
  | 
  | 
  | |
  | 
  | Unkmultiports  | 
  | 
  | 
  | 0x0064  | |
  | 
  | 
  | 
  | 
  | 
  | 
  | |
  | 
  | Unksrcports  | 
  | 
  | 
  | 0x0068  | |
  | 
  | 
  | 
  | 
  | 
  | 
  | |
  | 
  | UnkVLANintports  | 
  | 
  | 
  | 0x006C  | |
  | 
  | 
  | 
  | 
  | 
  | 
  | |
  | 
  | Reserved  | 
  | 
  | 
  | 0x0070:0x007F  | |
  | 
  | 
  | 
  | 
  | 
  | 
  | |
Trunkmap3  | 
  | Trunkmap2  | 
  | Trunkmap1  | 
  | Trunkmap0  | 0x0080  | 
  | 
  | 
  | 
  | 
  | 
  | 
  | 
  | 
Trunkmap7  | 
  | Trunkmap6  | 
  | Trunkmap5  | 
  | Trunkmap4  | 0x0084  | 
  | 
  | 
  | 
  | 
  | 
  | 
  | 
  | 
  | 
  | Reserved  | 
  | 
  | Trunkports  | 0x0088  | |
  | 
  | 
  | 
  | 
  | 
  | 
  | |
  | 
  | Reserved  | 
  | 
  | 
  | 0x008C:0x009F  | |
  | 
  | 
  | 
  | 
  | 
  | 
  | |
Devcode  | 
  | Reserved  | 
  | SIO | 
  | Revision  | 0x00A0  | 
  | 
  | 
  | 
  | 
  | 
  | 
  | 
  | 
  | 
  | Reserved  | 
  | 
  | 
  | 0x00A4:0x00DF  | |
  | 
  | 
  | 
  | 
  | 
  | ||
RAMsize  | 
  | Reserved  | 
  | 
  | IOBcontrol  | 0x00E0  | |
  | 
  | 
  | 
  | 
  | 
  | 
  | 
  | 
  | 
  | Reserved  | 
  | 
  | 
  | 0x00E4  | |
  | 
  | 
  | 
  | 
  | |||
  | Pausetime100  | 
  | 
  | Pausetime10  | 0x00E8  | ||
  | 
  | 
  | 
  | 
  | 
  | 
  | 
  | 
  | 
  | Reserved  | 
  | 
  | 
  | 0x00EC  | |
  | 
  | 
  | 
  | 
  | 
  | 
  | |
Reserved  | 
  | 
  | Flowthreshold  | 
  | 
  | 0x00F0  | |
  | 
  | 
  | 
  | 
  | 
  | ||
  | Reserved  | 
  | 
  | LEDcontrol  | 0x00F4  | ||
  | 
  | 
  | 
  | 
  | 
  | ||
  | Syscontrol  | 
  | 
  | Statcontrol  | 0x00F8  | ||
14  | POST OFFICE BOX 655303 •DALLAS, TEXAS 75265  |