MPC8533EVTARJ Freescale Semiconductor, MPC8533EVTARJ Datasheet - Page 471

• Manufacturer Part Number: MPC8533EVTARJ
• Description: MPU POWERQUICC 783-PBGA
• Manufacturer: Freescale Semiconductor

Specifications of MPC8533EVTARJ

• Processor Type: MPC85xx PowerQUICC III 32-Bit
• Speed: 1.067GHz
• Voltage: 1V
• Mounting Type: Surface Mount
• Package / Case: 783-FCPBGA
• Lead Free Status / RoHS Status: Lead free / RoHS Compliant
• Features: -

11.4.5.1
The MPC8533E uses 0b101_0000 for the EEPROM calling address. The first EEPROM to be addressed
must be programmed to respond to this address, or an error is generated. If more EEPROMs are used, they
are addressed in sequential order.
11.4.5.2
The I
be the first 3 bytes programmed into the EEPROM. It should have a value of 0xAA55AA. The I
checks to ensure that this preamble is correctly detected before proceeding further. Following the
preamble, there should be a series of configuration registers (known as register preloads) programmed into
the EEPROM. Each configuration register should be programmed according to a particular format, as
shown in
contained are alternate configuration space (ACS), byte enables, and continue (CONT). The boot
sequencer expects the address offset to be a 32-bit (word) offset, that is, the 2 low-order bits are not
included in the boot sequencer command. For example, to access LAWBAR0 (byte offset of 0x00C08),
the boot sequencer ADDR[0:17] should be set to 0x00302.
After the first 3 bytes, 4 bytes of data should hold the desired value of the configuration register, regardless
of the size of the transaction. Byte enables should be asserted for any byte that will be written to the
configuration register, and they should be asserted contiguously, creating a 1-, 2-, or 4-byte write to a
register. The boot sequencer assumes that a big-endian address is stored in the EEPROM. In addition, byte
enable bit 0 (bit 1 of the byte) corresponds to the most-significant byte of data (data[0:7]), and byte enable
bit 3 (bit 4 of the byte) corresponds to the LSB of data (data[24:31]).
By setting ACS, an alternate configuration space address is prepended to the write request from the boot
sequencer. Otherwise, CCSRBAR is prepended to the EEPROM address.
If CONT is cleared, the first 3 bytes, including ACS, the byte enables, and the address, must also be
cleared. Also, the data contains the final cyclic redundancy check (CRC). A CRC-32 algorithm is used to
check the integrity of the data. The polynomial used is:
CRC values are calculated using the above polynomial with a start value of 0xFFFF_FFFF and an XOR
with 0x0000_0000. The CRC should cover all bytes stored in the EEPROM prior to the CRC. This
includes the preamble, all register preloads, and the first 3 bytes of the last 7-byte preload (which should
be all zeros). If a preamble or CRC fail is detected, the device hangs and the external HRESET_REQ signal
asserts. If there is a preamble fail, the boot sequencer may continue to pull I
occurs.
Freescale Semiconductor
2
C module expects that a particular data format be used for data in the EEPROM. A preamble should
Figure
1 + x
EEPROM Calling Address
EEPROM Data Format
MPC8533E PowerQUICC III Integrated Host Processor Family Reference Manual, Rev. 1
1
11-9. The first 3 bytes hold the attributes and address offset, as follows. The attributes
+ x
2
+ x
4
+ x
5
+ x
7
+ x
8
+ x
10
+ x
11
+ x
12
+ x
16
+ x
22
+ x
23
2
C pins low until a hard reset
+ x
26
+ x
32
2
I
2
C module
C Interfaces
11-19