NXP Semiconductors MPC5566, Reference Manual

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Peripheral Bridge (PBRIDGE A and PBRIDGE B)
MPC5566 Microcontroller Reference Manual, Rev. 2
Freescale Semiconductor 5-9
Address: Base + 0x0040 (PBRIDGE_x_OPACR0);
Base + 0x0044 (PBRIDGE_x_OPACR1);
Base + 0x0048 (PBRIDGE_x_OPACR2);
Base + 0x004C (PBRIDGE_B_OPACR3)
Access: R/W
0 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15
R BW0
1
SP0
2
WP0
TP0
2
BW1 SP1 WP1 TP1 BW2 SP2 WP2 TP2 BW3 SP3 WP3 TP3
W
Reset 0 1 0 0 0 1 0 0 0 1 0 0 0 1 0 0
16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31
R
BW4 SP4 WP4 TP4 BW5 SP5 WP5 TP5 BW6 SP6 WP6 TP6 BW7 SP7 WP7 TP7
W
Reset 0 1 0 0 0 1 0 0 0 1 0 0 0 1 0 0
1
In the PBRIDGE_A_PACR0 and PBRIDGE_B_PACR0 registers, the BW0 bit is not writeable
2
The SP0 and TP0 bits default values are always used, even though the bits are writeable.
Figure 5-4. Off-platform Peripheral Access Control Registers (PBRIDGE_ x _OPACR n )
Table 5-5. PBRIDGE_ x _PACR n and PBRIDGE_ x _OPACR n
Field Descriptions
Field Description
0, 4, 8, 12, 16,
20, 24, 28
BW n
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.
1, 5, 9, 13, 17,
21, 25, 29
SP n
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.
Access Field 0 Access Field 1 Access Field 2 Access Field 3
Access Field 4
Access Field 5 Access Field 6 Access Field 7