Rainbow Electronics W90N740 - Manual (Page 83)

W90N740
Publication Release Date: November 26, 2004
- 79 - Revision A4
CAM Command Register (CAMCMR_0, CAMCMR_1)
The three accept bits in the CAMCMR_x are used to override CAM rejections or accept ion. To place the
MAC in promiscuous mode, use CAMCMR_x settings to accept packets with all three types of
destination address. The three types of destination address packets are as follows:
1. Station packets, xxxxxxx0-xxxxxxxx-xxxxxxxx-xxxxxxxx-xxxxxxxx-xxxxxxxx
2. Multicast packet, xxxxxxx1-xxxxxxxx-xxxxxxxx-xxxxxxxx-xxxxxxxx-xxxxxxxx. (but x not all 1)
3. Broadcast packet, 11111111-11111111-11111111-11111111-11111111-11111111
Register Address R/W Description Reset Value
CAMCMR_0 0xFFF0.3000 R/W CAM Command Register 0x0000.0000
CAMCMR_1 0xFFF0.3800 R/W CAM Command Register 0x0000.0000
31 30 29 28 27 26 25 24
Reserved
23 22 21 20 19 18 17 16
Reserved
15 14 13 12 11 10 9 8
Reserved
7 6 5 4 3 2 1 0
Reserved ECMP CCAM ABP AMP AUP
ECMP [4]: Enable CAM Compare
Default value: 0
Set this bit to enable compare mode.
CCAM [3]: Complement CAM
Default value: 0
Set this bit to do complement CAM compare logic, and data packets rejected by CAM which can
recognize the destination address.
ABP [2]: Accept Broadcast Packet
Default value: 0
Set this bit to accept any packet with a broadcast address.