MCF5270CAB100 Freescale Semiconductor, MCF5270CAB100 Datasheet - Page 210

• Manufacturer Part Number: MCF5270CAB100
• Description: MCU V2 COLDFIRE 64K SRAM 160-QFP
• Manufacturer: Freescale Semiconductor
• Series: MCF527xr

Specifications of MCF5270CAB100

• Core Processor: Coldfire V2
• Core Size: 32-Bit
• Speed: 100MHz
• Connectivity: EBI/EMI, Ethernet, I²C, SPI, UART/USART
• Peripherals: DMA, WDT
• Number Of I /o: 39
• Program Memory Type: ROMless
• Ram Size: 64K x 8
• Voltage - Supply (vcc/vdd): 1.4 V ~ 1.6 V
• Oscillator Type: External
• Operating Temperature: -40°C ~ 85°C
• Package / Case: 160-QFP
• Processor Series: MCF527x
• Core: ColdFire V2
• 3rd Party Development Tools: JLINK-CF-BDM26, EWCF
• Development Tools By Supplier: NNDK-MOD5272-KIT, NNDK-MOD5270-KIT
• Lead Free Status / RoHS Status: Lead free / RoHS Compliant
• Eeprom Size: -
• Program Memory Size: -
• Data Converters: -
• Lead Free Status / Rohs Status: Details

System Control Module (SCM)
The initial state of the master priorities is M3 > M2 > M1 > M0. System software should guarantee
that the programmed Mn_PRTY fields are unique, otherwise the hardware defaults to the
initial-state priorities.
11.4 System Access Control Unit (SACU)
This section details the functionality of the System Access Control Unit (SACU) which provides
the mechanism needed to implement secure bus transactions to the address space mapped to the
internal modules.
11-12
23–22
21–20
19–18
17–15
11–8
Bits
7–0
24
14
13
12
M3_PRTY Master priority level for master 3 (Fast Ethernet Controller)
M2_PRTY Master priority level for master 2 (DMA Controller)
M0_PRTY Master priority level for master 0 (ColdFire Core)
PRKLAST
LCKOUT_
TIMEOUT
FIXED
Name
TIME
—
—
—
Table 11-6. MPARK Field Description (Continued)
Reserved, should be cleared.
00 fourth (lowest) priority
01 third priority
10 second priority
11 first (highest) priority
00 fourth (lowest) priority
01 third priority
10 second priority
11 first (highest) priority
00 fourth (lowest) priority
01 third priority
10 second priority
11 first (highest) priority
Reserved, should be cleared.
Fixed or round robin arbitration
0 round robin arbitration
1 fixed arbitration
Timeout Enable
0 disable count for when a master is locked out by other masters.
1 enable count for when a master is locked out by other masters and allow access when
Park on the last active master or highest priority master if no masters are active
0 park on last active master
1 park on highest priority master
Lock-out Time. Lock-out time for a master being denied the bus.
The lock out time is defined as 2^ LCKOUT_TIME[3:0].
Reserved, should be cleared.
LCKOUT_TIME is reached.
MCF5271 Reference Manual, Rev. 2
Description
Freescale Semiconductor