Media Local Bus (MLB)
MPC5510 Microcontroller Family Reference Manual, Rev. 1
33-8
Freescale Semiconductor
Preliminary
33.3.1.3
MLB Module Status Register (MLB_MSR)
The MLB_MSR contains the status bits that are used to determine detection of the system channel and
status flags for service and eDMA requests.
Offset M0x0004
Access: Read/Write
0
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
R
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
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
R
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
BLANK
W
Reset
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
Figure 33-3. MLB Blank Register (MLB_MBR)
Table 33-4. MLB Blank (MLB_MBR) Register Field Descriptions
Field
Description
bit 0–30
Reserved.
BLANK
MLB Blank Request. This bit is used to cancel data that has been previously queued in the DSPI FIFO due to
change in the receiver status. (for example, RxBusy)
To save IOP cycles required to clear this bit again, the SoftMLB Interface Logic automatically clears this bit,
after the MLB_GATE signal has been generated internally. The SoftMLB Interface Logic asserts the
MLB_GATE signal at the start of the next MLB quadlet and resets the BLANK signal. The self clearing function
is only active when MDIS is cleared. The BLANK bit is cleared when MDIS is set. Due to clock synchronization
between the system clock and MLBCLK, it may take up to two MLBCLK clocks before BLANK is updated in
the MLBCLK domain.
0 MLB Blank not requested (default out of Reset)
1 MLB Blank requested