Freescale Semiconductor MPC5200B ユーザーズマニュアル
MPC5200B Users Guide, Rev. 1
13-4
Freescale Semiconductor
BestComm XLB Address Snooping
13.14
BestComm XLB Address Snooping
BestComm prefetches data from the XLB into 4 32-Byte wide Read Line Buffers. A buffer will be invalidated, if the BestComm XLB Address
Snooping (BSDIS) is enabled, see XLB Arbiter Configuration Register, and a write operation on the XLB to the prefetched data address
happens. No invalidation of the buffer will happen if the BSDIS bit is set. BestComm will still use the old prefetched data.
Snooping (BSDIS) is enabled, see XLB Arbiter Configuration Register, and a write operation on the XLB to the prefetched data address
happens. No invalidation of the buffer will happen if the BSDIS bit is set. BestComm will still use the old prefetched data.
13.15
BestComm DMA Registers—MBAR+0x1200
A register overview is provided in
.
Hyperlinks to the BestComm DMA registers are provided below:
13.15.1
SDMA Task Bar Register—MBAR + 0x1200
sdma_task_bar_register
•
(0x1200)
•
(0x1204)
•
(0x1208)
•
(0x120C)
•
(0x1210)
•
(0x1214)
•
(0x1218)
•
(0x121C)
•
(0x1220)
•
(0x1224)
•
(0x1228)
•
(0x122C)
•
•
(0x1234)
•
•
(0x123C)
•
(0x1240)
•
(0x1244)
•
(0x1248)
•
(0x124C)
•
(0x1250)
•
(0x1254)
•
(0x1258)
•
(0x125C)
•
•
•
(0x1270)
•
(0x1274)
•
(0x1278)
•
(0x127C)
Table 13-1. SDMA Task Bar Register
msb 0
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
R
taskBar
W
RESET:
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31 lsb
R
taskBar
W
RESET:
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
Bit
Name
Description
0:31
taskBar
TaskBAR is the pointer to the base address of the Task Table (Entry Table)