Rainbow Electronics RF22 - Manual (Page 72)

RF22
Version: 0.1 Date: 12/23/2008
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Register 3Bh. Transmit Header 2
Bit D7 D6 D5 D4 D3 D2 D1 D0
Name txhd[23:16]
Type R/W
Reset value = 00000000
Bit Name Function
7:0 txhd[23:16]
Transmit Header 2.
3rd byte of the header to be transmitted.
Register 3Ch. Transmit Header 1
Bit D7 D6 D5 D4 D3 D2 D1 D0
Name txhd[15:8]
Type R/W
Reset value = 00000000
Bit Name Function
7:0 txhd[15:8]
Transmit Header 1.
2nd byte of the header to be transmitted.
Register 3Dh. Transmit Header 0
Bit D7 D6 D5 D4 D3 D2 D1 D0
Name txhd[7:0]
Type R/W
Reset value = 00000000
Bit Name Function
7:0 txhd[7:0] Transmit Header 0.
1st byte of the header to be transmitted.
Register 3Eh. Transmit Packet Length
Bit D7 D6 D5 D4 D3 D2 D1 D0
Name pklen[7:0]
Type R/W
Reset value = 00000000
Bit Name Function
7:0 pklen[7:0] Packet Length.
The value in the pklen[7:0] register corresponds directly to the number of bytes in the Transmit
Packet. For example pklen[7:0] = ‘00001000’ corresponds to a packet length of 8 bytes. The
maximum packet length is pklen[7:0] = ‘11111111’, a 255 byte packet. Writing 0 is possible, in
this case we do not send any data in the packet. During RX, if fixpklen = 1, this will specify also
the Packet Length for RX mode.
Check Header bytes 3 to 0 are checked against the corresponding bytes in the Received Header if the check is
enabled in "Register 31h. EzMAC Status".
Register 3Fh. Check Header 3
Bit D7 D6 D5 D4 D3 D2 D1 D0
Name chhd[31:24]
Type R/W