si4430 Silicon Laboratories, si4430 Datasheet - Page 112

• Manufacturer Part Number: si4430
• Description: Si4430 Ism Transceiver
• Manufacturer: Silicon Laboratories

Register 33h. Header Control 2
Si4430
Reset value = 00100010
112
Name
Type
Bit
6:4
2:1
Bit
7
3
0
synclen[1:0]
Reserved
hdlen[2:0]
prealen[8]
Reserved
fixpklen
Name
D7
R
Reserved.
Header Length.
Length of header used if packet handler is enabled for TX/RX (enpactx/rx). Headers are
transmitted/received in descending order.
000:
001:
010:
011:
100:
Fix Packet Length.
When fixpklen = 1 the packet length (pklen[7:0]) is not included in the header. When fixp-
klen = 0 the packet length is included in the header.
Synchronization Word Length.
The value in this register corresponds to the number of bytes used in the Synchronization
Word. The synchronization word bytes are transmitted in descending order.
00:
01:
10:
11:
MSB of Preamble Length.
See register Preamble Length.
D6
hdlen[2:0]
R/W
D5
No TX/RX header
Header 3
Header 3 and 2
Header 3 and 2 and 1
Header 3 and 2 and 1 and 0
Synchronization Word 3
Synchronization Word 3 and 2
Synchronization Word 3 and 2 and 1
Synchronization Word 3 and 2 and 1 and 0
Preliminary Rev. 0.4
D4
fixpklen
Function
R/W
D3
D2
synclen[1:0]
R/W
D1
prealen[8]
R/W
D0