atr2434 ATMEL Corporation, atr2434 Datasheet - Page 20

• Manufacturer Part Number: atr2434
• Description: Wirelessusb 2.4-ghz Dsss Radio Soc - Atmel Corporation
• Manufacturer: ATMEL Corporation

Table 18. Transmit SERDES Data
Table 19. Transmit SERDES Valid
Table 20. PN Code
20
63 62 61 60 59 58 57 56 55 54 53 52 51 50 49 48 47 46 45 44 43 42 41 40 39 38 37 36 35 34 33 32
31 30 29 28 27 26 25 24 23 22 21 20 19 18 17 16 15 14 13 12 11 10
Bit
7:0
Bit
7:0
Note:
Bit
63:0
7
7
Name
Valid
Name
PN Codes
Name
Data
Address 0x18
1. The Valid bit in the Transmit SERDES Valid register (Reg 0x10) is used to mark whether the radio will send data or pre-
Address 0x14
Addr: 0x0F
Addr: 0x10
ATR2434 [Preliminary]
Addr: 0x11-18
(1)
amble during that bit time of the data byte. Data is sent LSB first. The SERDES will continue to send data until there are
no more VALID bits in the shifter. For example, writing 0x0F to the Transmit SERDES Valid register (Reg 0x10) will send
half a byte.
Description
The Valid bits are used to determine which of the bits in the Transmit SERDES Data register (reg 0x0F) are valid.
1 = Valid transmit bit
0 = Invalid transmit bit
Description
Transmit Data. The over-the-air transmitted order is bit 0 followed by bit 1, followed by bit 2, followed by bit 3, followed
by bit 4, followed by bit 5, followed by bit 6, followed by bit 7.
Description
The value inside the 8 byte PN code register is used as the spreading code for DSSS communication. All 8 bytes
can be used together for 64 chips/bit PN code communication, or the registers can be split into two sets of 32
chips/bit PN codes and these can be used alone or with each other to accomplish faster data rates. Not any 64
chips/bit value can be used as a PN code as there are certain characteristics that are needed to minimize the
possibility of multiple PN codes interfering with each other or the possibility of invalid correlation. The over-the-air
order is bit 0 followed by bit 1, followed by bit 62, followed by bit 63.
6
6
5
5
Address 0x17
Address 0x13
4
4
REG_TX_VALID
REG_TX_DATA
REG_PN_CODE
Valid
Data
3
3
Address 0x16
Address 0x12
2
2
9
8
7
0x1E8B6A3DE0E9B222
6
1
1
Default: 0x00
Address 0x15
5
Default: 0x00
Address 0x11
Default:
4
3
4822C–ISM–09/04
2
0
0
1
0