RFM22
Register 3Dh. Transmit Header 0
Bit
D7
D6
D5
D4
D3
D2
D1
D0
txhd[7:0]
R/W
Name
Type
Reset value = 00000000
Bit
Name
txhd[7:0]
Function
Transmit Header 0.
1st byte of the header to be transmitted.
7:0
Register 3Eh. Packet Length
Bit
D7
D6
D5
D4
D3
D2
D1
D0
pklen[7:0]
R/W
Name
Type
Reset value = 00000000
Bit
Name
Function
Packet Length.
The value in the pklen[7:0] register corresponds directly to the number of bytes
in the 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.
pklen[7:0]
7:0
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".
109
Tel: +86-755-82973805
Fax: +86-755-82973550
E-mail: sales@hoperf.com
http://www.hoperf.com