PXR40RM Datasheet, PDF (453/1434 Pages) Freescale Semiconductor, Inc – PXR40 Microcontroller

Peripheral Bridge (PBRIDGE)
Address: Base + 0x0040 (PBRIDGE_x_OPACR0);
Base + 0x0044 (PBRIDGE_x_OPACR1);
Base + 0x0048 (PBRIDGE_x_OPACR2);
Base + 0x004C (PBRIDGE_x_OPACR3)
0
1
2
3
Access Field 0
4
5
6
7
Access Field 1
Access: R/W
8
9
10
11
Access Field 2
12 13 14 15
Access Field 3
R BW0 ¹ SP0 ²
TP0 ²
WP0
BW1 SP1 WP1 TP1 BW2 SP2 WP2 TP2 BW3 SP3 WP3 TP3
W
Reset 0
10
0
0 1 0 0 0 1 0 0 010 0
16
17
18
19
Access Field 4
20
21
22
23
Access Field 5
24
25
26
27
Access Field 6
28 29 30 31
Access Field 7
R
BW4 SP4 WP4 TP4 BW5 SP5 WP5 TP5 BW6 SP6 WP6 TP6 BW7 SP7 WP7 TP7
W
Reset 0
10
0
0 1 0 0 0 1 0 0 010 0
1 _{In the PBRIDGE_A_PACR0 and PBRIDGE_B_PACR0 registers, the BW0 bit is not writeable}
2 _{The default values are always used for the SP0 and TP0 bits, even though the bits are writeable.}
Figure 15-4. Off-platform Peripheral Access Control Registers (PBRIDGE_x_OPACRn)
Table 15-5. PBRIDGE_x_PACRn and PBRIDGE_x_OPACRn
Field Descriptions
Field
0
4
8
12
16
20
24
28
BWn
1
5
9
13
17
21
25
29
SPn
Description
Buffer writes. Determines whether write accesses to this peripheral are allowed to be buffered. Write
accesses not bufferable by default
0 No write accesses are bufferable by the PBRIDGE to this peripheral.
1 Write accesses can be buffered by the PBRIDGE to this peripheral.
Note: In PBRIDGE_A_PACR0 and PBRIDGE_B_PACR0, the BW0 bit is not writeable.
Supervisor protect. Determines whether the peripheral requires supervisor privilege level for access.
Supervisor privilege level required by default.
0 The peripheral does not require supervisor privilege level for accesses.
1 The peripheral requires supervisor privilege level for accesses.
The PBRIDGE_x_MPCR[MPLy] control bit for the master must be set. If not, access is terminated
with an error response and no peripheral access is initiated on the slave bus.
Note: For PBRIDGE_A_PACR0 and PBRIDGE_B_PACR0, you must have supervisor privileges to
access PBRIDGE registers.
Note: Even though the SP0 bit (1) is writeable, the reset value for SP0 is always used.
Freescale Semiconductor
PXR40 Microcontroller Reference Manual, Rev. 1
15-9