MPC8308-RDB Freescale Semiconductor, MPC8308-RDB Datasheet - Page 26

• Manufacturer Part Number: MPC8308-RDB
• Description: BOARD REF DESIGN MPC8308
• Manufacturer: Freescale Semiconductor
• Series: PowerQUICC II™ PROr
• Type: MPUr

Specifications of MPC8308-RDB

• Contents: Board, Cables, Documentation, Power Supply, Software
• Ethernet Connection Type: Serial to Ethernet
• Data Rate: 10 Mbps, 100 Mbps, 1000 Mbps
• Memory Type: DDR2, SDRAM
• Interface Type: HSSI
• Operating Voltage: 1.5 V
• Operating Current: 5 uA
• Maximum Power Dissipation: 1000 mW
• Operating Temperature Range: - 55 C to + 125 C
• Product: Modules
• For Use With/related Products: MPC8308
• Lead Free Status / RoHS Status: Lead free / RoHS Compliant

MPC8308_RDB Board Configuration
Check the MPC8308 reference manual for the meaning of the CFG_RST_SRC combination. By default,
the DIP switch is set to all ON, meaning CFG_RST_SRC[0..3] = 0000. In this case, the hardware reset
configuration is loaded from local bus NOR flash memory.
4
This section describes the operational frequency and configuration options of the MPC8308_RDB.
4.1
The reset configuration word (RCW) controls the clock ratios and other basic device functions such as boot
location, eTSEC mode and endian mode. The reset configuration word is divided into reset configuration
word low register (RCWLR) and reset configuration word high register (RCWHR) and is loaded from the
local bus during the power-on or hard reset flow. The default RCW low bit setting is 0x4406_0000. The
default RCW high bit setting is 0xA060_6C00. The RCW is located at the lowest 64 bytes of the boot flash
memory, which is 0xFE00_0000 if the default memory map is used.
The RCW definitions are shown in
26
MPC8308_RDB Board Configuration
Reset Configuration Word
FE000000:
FE000010:
FE000020:
FE000030:
PowerQUICC™ MPC8308_RDB User’s Guide, Rev. 3
Table 7. Default RCW in Flash Memory
Figure 25
44444444
00000000
a0a0a0a0
6c6c6c6c
0
1
Figure 24. DIP Switch S2
ON
1
and
Address
44444444
00000000
a0a0a0a0
6c6c6c6c
Figure
2
26.
3
06060606
00000000
60606060
00000000
4
06060606
00000000
60606060
00000000
Micetek International Inc.