National CP3BT26 Computer Hardware User Manual


 
www.national.com 78
CP3BT26
15.8 BLUETOOTH SHARED DATA RAM
The shared data RAM is a 4.5K memory-mapped section of
RAM that contains the link control data, RF programming
look-up table, and the link payload. This RAM can be read
and written in the same way as the Static RAM space and
can also be read by the sequencer in the Bluetooth LLC. Ar-
bitration between these devices is performed in hardware.
Table 33 shows the memory map of the Bluetooth LLC
shared Data RAM.
Table 33 Memory Map of Bluetooth Shared RAM
Address
(offset from 0E 8000h)
Description
0000
h–01D9h
RF Programming
Look-up Table
01DAh
01FFh Unused
0200h023Fh Link Control 0
0240h027Fh Link Control 1
0280h02BFh Link Control 2
02C0h02FFh Link Control 3
0300h033Fh Link Control 4
0340h037Fh Link Control 5
0380h03BFh Link Control 6
03C0h03FFh Link Control 7
0400h11FFh Link Payload 06