2 arbiter version register (xarb_ver), Arbiter version register (xarb_ver) -10 – Freescale Semiconductor MCF5480 User Manual
Page 332

MCF548x Reference Manual, Rev. 3
10-10
Freescale Semiconductor
10.3.3.2
Arbiter Version Register (XARB_VER)
4
—
Reserved, should be cleared.
3
BA
Bus Activity Time-out Enable. If enabled, the arbiter will set the Bus Activity Time-out Status bit
(XARB_SR[BA]) when the Bus Activity Time-out is reached. Bus Activity Time-out is derived from
the arbiter bus activity time out count register.
0 Disable bus activity time-out
1 Enable bus activity time-out
2
DT
Data Tenure Time-out Enable. If enabled, the arbiter will transfer error acknowledge when the Data
Tenure Time-out is reached. Data Tenure Time-out is derived from the arbiter data tenure time out
count register. Also, the arbiter will set the Data Tenure Time-out Status bit (Arbiter Status Register
Bit 30). Setting this bit will also enable the Address Tenure Time-out. This is required to ensure that
a data time-out will not occur before an address acknowledge.
0 Disable data tenure time-out
1 Enable data tenure time-out
1
AT
Address Tenure Time-out Enable. If enabled, the arbiter will AACK and TEA (if required) when the
Address Tenure Time-out is reached. Address Tenure Time-out is derived from the Arbiter Address
Tenure Time Out Count register. Also, the arbiter will set the Address Tenure Time-out Status bit
(Arbiter Status Register Bit 31). Address Tenure Time-out is also enabled by the DT bit above.
0 Disable address tenure time-out
1 Enable address tenure time-out
0
—
Reserved, should be cleared.
31
30
29
28
27
26
25
24
23
22
21
20
19
18
17
16
R
VER
W
Reset
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
15
14
13
12
11
10
9
8
7
6
5
4
3
2
1
0
R
VER
W
Reset
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
1
Reg
Addr
MBAR + 0x0244
Figure 10-6. Arbiter Version Register (XARB_VER)
Table 10-6. VER Field Descriptions
Bit
Name
Description
31–0
VER
Hardware Version ID. The current version number is 0x0001.
Table 10-5. XARB_CFG Bit Descriptions (Continued)
Bit
Name
Description