MPC8536E-ANDROID Freescale Semiconductor, MPC8536E-ANDROID Datasheet - Page 654

• Manufacturer Part Number: MPC8536E-ANDROID
• Description: HARDWARE/SOFTWARE ANDROID OS
• Manufacturer: Freescale Semiconductor
• Series: PowerQUICC ™r
• Type: MPUr

Specifications of MPC8536E-ANDROID

• Contents: Board
• For Use With/related Products: MPC8536
• Lead Free Status / RoHS Status: Lead free / RoHS Compliant

Enhanced Local Bus Controller
13.3.1.2
The ORn registers define the sizes of memory banks and access attributes. The ORn attribute bits support
the following three modes of operation as defined by BRn[MSEL]:
13-12
21–22
24–26
28–29
Bits
23
27
30
31
•
•
•
GPCM mode
FCM mode
UPM mode
DECC Specifies the method for data error checking.
Name
MSEL Machine select. Specifies the machine to use for handling memory operations.
ATOM Atomic operation. Writes (reads) to the address space handled by the memory controller bank reserve the
WP
—
—
V
Option Registers (OR0–OR7)
00 Data error checking disabled, but normal parity generation for GPCM and UPM. No ECC generation for
01 Normal parity generation and checking for GPCM and UPM. ECC checking is enabled, but ECC
10 Read-modify-write parity generation and normal parity checking for GPCM and UPM. ECC checking and
11 Reserved
Write protect.
0 Read and write accesses are allowed.
1 Only read accesses are allowed. The memory controller does not assert LCS n on write cycles to this
000 GPCM (possible reset value)
001 FCM (possible reset value)
010 Reserved
011 Reserved
100 UPMA
101 UPMB
110 UPMC
111 Reserved
Reserved
selected memory bank for the exclusive use of the accessing device. The reservation is released when the
device performs a read (write) operation to this memory controller bank. If a subsequent read (write) request
to this memory controller bank is not detected within 256 bus clock cycles of the last write (read), the
reservation is released and an atomic error is reported (if enabled).
00 The address space controlled by this bank is not used for atomic operations.
01 Read-after-write-atomic (RAWA).
10 Write-after-read-atomic (WARA).
11 Reserved
Reserved
Valid bit. Indicates that the contents of the BR n and OR n pair are valid. LCS n does not assert unless V is set
(an access to a region that has no valid bit set may cause a bus time-out). After a system reset, only BR0[V]
is set.
0 This bank is invalid.
1 This bank is valid.
memory bank. LTESR[WP] is set (if WP is set) if a write to this memory bank is attempted, and a local bus
error interrupt is generated (if enabled), terminating the cycle.
FCM.
generation is disabled, for FCM on full-page transfers.
generation are enabled for FCM on full-page transfers.
MPC8536E PowerQUICC III Integrated Processor Reference Manual, Rev. 1
Table 13-4. BR n Field Descriptions (continued)
Description
Freescale Semiconductor