HFA3860 Datasheet, PDF (31/40 Pages) Intersil Corporation – 11 Mbps Direct Sequence Spread Spectrum Baseband Processor

HFA3860
Bits 7:0
CONFIGURATION REGISTER 22 ADDRESS (58h) TX LENGTH FIELD (HIGH)
This 8-bit register contains the higher byte (bits 8-15) of the transmit Length Field described in the Header. This byte
combined with the lower byte indicates the number of bits to be transmitted in the data packet.
Bits 7:0
CONFIGURATION REGISTER 23 ADDRESS (5Ch) TX LENGTH FIELD (LOW)
This 8-bit register contains the lower byte (bits 0-7) of the transmit Length Field described in the Header. This byte combined
with the higher byte indicates the number of bits to be transmitted in the data packet.
CONFIGURATION REGISTER 24 ADDRESS (60h) RX STATUS
This read only register is provided for MACs that can’t process the header fields from the RXD port.
Bits 7:6
RX signal field detected
00 = DBPSK - 11 Chip Sequence (1 Mbps)
01 = DQPSK - 11 Chip Sequence (2 Mbps)
10 = BMBOK - modified 8 chip Walsh sequence (5.5 Mbps)
11 = QMBOK - modified 8 chip Walsh sequence (11 Mbps)
Bit 5
Search/Acquisition Status (set to 0 when RX_PE is inactive)
0 = Searching
1 = Carrier Acquired
Bit 4
SFD search status (set to 0 when RX_PE is inactive)
0 = Searching
1 = SFD Found
Bit 3
Signal Field Valid (set to 0 when RX_PE is inactive) signal field must be one of the 4 field values in CR 16 to CR19
0 = Not Valid
1 = Valid
Bit 2
Valid header CRC (set to 0 when RX_PE is inactive)
0 = Not Valid
1 = Valid
Bit 1
Antenna received on. Indicates which antenna the receiver was on when the last valid CRC occurred.
0 = Antenna B
1 = Antenna A
Bit 0
Always 0
Bits 7:0
CONFIGURATION REGISTER 25 ADDRESS (64h) RX SERVICE FIELD STATUS
This register contains the detected received 8-bit value of the Service Field for the Header. This field is reserved for future
use. It should be the value programmed into register 21 of the transmitter.
Bits 7:0
CONFIGURATION REGISTER 26 ADDRESS (68h) RX LENGTH FIELD STATUS (HIGH)
This register contains the detected higher byte (bits 8-15) of the received Length Field contained in the Header. This byte
combined with the lower byte indicates the number of transmitted bits in the data packet.
Bits 7:0
CONFIGURATION REGISTER ADDRESS 27 (6Ch) RX LENGTH FIELD STATUS (LOW)
This register contains the detected lower byte of the received Length Field contained in the Header. This byte combined with
the upper byte indicates the number of transmitted bits in the data packet.
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