Contents
Availability
Wireless cores with revision 4 and lower can only support one PHY type per core, newer revisions can support more than one PHY Type per core (A and B or G combined).
Dual Band Boards
The following boards have two bands available.
PCI ID |
Board |
0x4324 |
BCM4306 Series, A/B support |
0x4312 |
BCM4311 Series, A/G support |
0x4319 |
BCM4318 Series, A/G support |
Dual Core Boards
If the core revision (of the first wireless core present) is 4, then any dual-band board (see above) or these boards have two cores. Other boards may have two cores as well, but that isn't relevant as they won't be connected.
PCI ID |
Board |
0x4321 |
BCM4306 Series |
0x4313 |
BCM4311 Series |
0x431A |
BCM4318 Series |
Multiband Operation
band switch
Preconditions: core up, MAC disabled, interrupts disabled, radio off
- If multiband operation is by way of multiple cores, turn off LEDs
put PHY into reset but also turn off the G mode enable TM state low bit when turning on the PHY reset bit
- perform the low level bandswitch
low level band switch
if a core switch is required and the crystal is turned on, disable the G mode TM state low bit
if the crystal is turned on, set the G mode TM state low bit as required (i.e. set for G band, clear for A band)
activate band
if the core revision is >= 5
- ...
- take PHY out of reset
- initialise the band
- update the crypto hardware on that band
- restore interrupts
initialise band
- update Host flags in hardware
- upload band initial values
- turn on Analog (see PHY pages)
- turn on radio
- initialize PHY
- update
- min/max contention window
- slot timing
- Microcode rate tables
- shared memory PHY type and PHY version
- MAC control
- MAC BSSID
SHM default IV location (must be 29 for A PHY and core rev < 5, 30 otherwise)
- SHM synthetic pull-up delay (500 if not associated or IBSS, 3700 for A PHY, 1050 for B/G PHY, at least 2400 for Radio 2050 revision 8)
- on B/G PHY, ensure that wideband frequency tracking is enabled/disabled correctly
band initial value upload
Upload the corresponding band switch initial values according to this table:
core revision |
PHY |
initial values |
15 |
LP |
d11lp0bsinitvals15 |
14 |
LP |
d11lp0bsinitvals14 |
13 |
LP |
d11lp0bsinitvals13 |
13 |
G |
d11b0g0bsinitvals13 |
13 |
A |
d11a0g1bsinitvals13 |
11-12 |
N |
d11n0bsinitvals11 |
9 |
A |
d11a0g1bsinitvals9 (2.4 GHz PHY available) or d11a0g0initvals9 (no 2.4 GHz PHY) |
9 |
G |
d11b0g0bsinitvals9 |
5-8, 10 |
A |
d11a0g1bsinitvals5 (2.4 GHz PHY available) or d11a0g0initvals5 (no 2.4 GHz PHY) |
5-8, 10 |
G |
d11b0g0bsinitvals5 |
4 |
A |
d11a0g0bsinitvals4 |
4 |
G |
d11b0g0bsinitvals4 |