cyrf6936 Cypress Semiconductor Corporation., cyrf6936 Datasheet - Page 29

• Manufacturer Part Number: cyrf6936
• Description: Wirelessusb Lp 2.4 Ghz Radio Soc
• Manufacturer: Cypress Semiconductor Corporation.

Document #: 38-16015 Rev. *G
Mnemonic
Length
Default
When using 32 chip SOP_CODE_ADR codes, only the first four bytes of this register are used; in order to complete the file write process, these
four bytes must be followed by four bytes of “dummy” data. However, a class of codes known as “multiplicative codes” may be used; there are
64 chip codes with good auto-correlation and cross-correlation properties where the least significant 32 chips themselves have good auto-cor-
relation and cross-correlation properties when used as 32 chip codes. In this case the same eight byte value may be loaded into this file and
used for both 32 chip and 64 chip SOP symbols.
When reading this file, all eight bytes must be read; if fewer than eight bytes are read from the file, the contents of the file will have been rotated
by the number of bytes read. This applies to writes, as well.
Do not access or modify this register during Transmit or Receive.
Recommended SOP Codes:
0x91CCF8E291CC373C
0x0FA239AD0FA1C59B
0x2AB18FD22AB064EF
0x507C26DD507CCD66
0x44F616AD44F6E15C
0x46AE31B646AECC5A
0x3CDC829E3CDC78A1
0x7418656F74198EB9
0x49C1DF6249C0B1DF
0x72141A7F7214E597
Mnemonic
Length
Default
In GFSK mode, this file register is ignored.
In 64 SDR mode, only the first eight bytes are used.
In 32 DDR mode, only eight bytes are used. The format for these eight bytes: 0x00000000BBBBBBBB00000000AAAAAAAA, where ‘0’
represents unused locations. Example: 0x00000000B2BB092B00000000B86BC0DC; where “B86BC0DC” represents AAAAAAAA,
“00000000” represents unused locations, “B2BB092B” represents BBBBBBBB, and “00000000” represents unused locations.
In 64 DDR and 8DR modes, all sixteen bytes are used.
When reading this file, all sixteen bytes must be read; if fewer than sixteen bytes are read from the file, the contents of the file will have been
rotated by the number of bytes read. This applies to writes, as well.
Certain 16 byte sequences have been calculated that provide excellent auto-correlation and cross-correlation properties, and it is recommended
that such sequences be used; the default value of this register is one such sequence. In typical applications, all devices use the same
DATA_CODE_ADR codes, and devices and systems are addressed by using different SOP_CODE_ADR codes; in such cases it may never
be necessary to change the contents of this register from the default value.
Typical applications should use the default code.
Do not access or modify this register during Transmit or Receive.
Mnemonic
Length
Default
1st byte – The number of repetitions of the preamble sequence that are to be transmitted. The preamble may be disabled by writing 0x00 to
this byte.
2nd byte – Least significant eight chips of the preamble sequence
3rd byte – Most significant eight chips of the preamble sequence
If using 64 SDR to communicate with CYWUSB69xx devices, set number of repetitions to four for optimum performance
When reading this file, all three bytes must be read; if fewer than three bytes are read from the file, the contents of the file will have been rotated
by the number of bytes read. This also applies to writes.
Do not access or modify this register during Transmit or Receive.
0x02F9939702FA5CE3012BF1DB0132BE6F
0x17FF9E213690C782
DATA_CODE_ADR
PREAMBLE_ADR
SOP_CODE_ADR
0x333302
16 Bytes
3 Bytes
8 Bytes
Address
Address
Address
CYRF6936
R/W
R/W
R/W
Page 29 of 40
0x22
0x23
0x24
R/W
R/W
R/W
[+] Feedback