MCF5270CAB100 Freescale Semiconductor, MCF5270CAB100 Datasheet - Page 102

• 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

Enhanced Multiply-Accumulate Unit (EMAC)
4.4
The EMAC provides the following program-visible registers:
These registers are shown in
4.4.1
MACSR functionality is organized as follows:
Table 4-1
4-6
• Four 32-bit accumulators (ACCn = ACC0, ACC1, ACC2, and ACC3)
• Eight 8-bit accumulator extensions (two per accumulator), packaged as two 32-bit values
• One 16-bit mask register (MASK)
• One 32-bit MAC status register (MACSR) including four indicator bits signaling product
• MACSR[11–8] contains one product/accumulation overflow flag per accumulator.
• MACSR[7–4] defines the operating configuration of the MAC unit.
• MACSR[3–0] contains indicator flags from the last MAC instruction execution.
Reset
Field
R/W
for load and store operations (ACCext01 and ACCext23)
or accumulation overflow (one for each accumulator: PAV0–PAV3)
31
describes MACSR fields.
Memory Map/Register Definition
MAC Status Register (MACSR)
—
31
Figure 4-7. MAC Status Register (MACSR)
Figure
Figure 4-6. EMAC Register Set
0000_0000_0000_0000_0000_0000_0000_0000
MCF5271 Reference Manual, Rev. 2
12
4-6.
Prod/acc overflow flags
0
ACCext01
ACCext23
MACSR
MASK
ACC0
ACC1
ACC2
ACC3
PAVx
11–8
R/W
Extensions for ACC0 and ACC1
Extensions for ACC2 and ACC3
MAC accumulator 0
MAC accumulator 1
MAC accumulator 2
MAC accumulator 3
MAC status register
MAC mask register
OM
C
7
Operational Mode
S/U
6
F/I
5
R/T
4
N
3
Freescale Semiconductor
Z
2
Flags
V
1
EV
0