MCF5282CVF80J Freescale Semiconductor, MCF5282CVF80J Datasheet - Page 84

• Manufacturer Part Number: MCF5282CVF80J
• Description: IC MPU 512K FLASH 256MAPBGA
• Manufacturer: Freescale Semiconductor
• Series: MCF528xr

Specifications of MCF5282CVF80J

• Core Processor: Coldfire V2
• Core Size: 32-Bit
• Speed: 80MHz
• Connectivity: CAN, EBI/EMI, Ethernet, I²C, SPI, UART/USART
• Peripherals: DMA, LVD, POR, PWM, WDT
• Number Of I /o: 150
• Program Memory Size: 512KB (512K x 8)
• Program Memory Type: FLASH
• Ram Size: 64K x 8
• Voltage - Supply (vcc/vdd): 2.7 V ~ 3.6 V
• Data Converters: A/D 8x10b
• Oscillator Type: External
• Operating Temperature: -40°C ~ 85°C
• Package / Case: 256-MAPBGA
• Processor Series: MCF528x
• Core: ColdFire V2
• 3rd Party Development Tools: JLINK-CF-BDM26, EWCF
• Development Tools By Supplier: NNDK-MOD5282-KIT
• Lead Free Status / RoHS Status: Contains lead / RoHS non-compliant
• Eeprom Size: -
• Lead Free Status / Rohs Status: No

Enhanced Multiply-Accumulate Unit (EMAC)
The and operator enables the MASK use and causes bit 5 of the extension word to be set. The exact
algorithm for the use of MASK is:
if extension word, bit [5] = 1, the MASK bit, then
Here, oa is the calculated operand address and se_d16 is a sign-extended 16-bit displacement. For
auto-addressing modes of post-increment and pre-decrement, the updated An value calculation is also
shown.
Use of the post-increment addressing mode, {(An)+} with the MASK is suggested for circular queue
implementations.
3.2.3
The accumulator registers store 32-bits of the MAC operation result. The accumulator extension registers
form the entire 48-bit result.
3-6
31–16
MASK
Field
15–0
Reset 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1
BDM: 0x805 (MASK)
if <ea> = (An)
if <ea> = (An)+
if <ea> =-(An)
if <ea> = (d16,An)
W
R 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1
Accumulator Registers (ACC0–3)
31 30 29 28 27 26 25 24 23 22 21 20 19 18 17 16 15 14 13 12 11 10 9
Reserved, must be set.
Performs a simple AND with the operand address for MAC instructions.
oa
oa
An = (An + 4) and
oa
An = (An - 4) and
oa
=
=
= (An - 4) and
= (An + se_d16) and
MCF5282 and MCF5216 ColdFire Microcontroller User’s Manual, Rev. 3
An and
An
Table 3-4. MASK Field Descriptions
Figure 3-3. Mask Register (MASK)
{0xFFFF, MASK}
{0xFFFF, MASK}
{0xFFFF, MASK}
{0xFFFF, MASK}
{0xFFFF0x, MASK}
Description
MASK
8
7
Access: User read/write
6
Freescale Semiconductor
5
BDM read/write
4
3
2
1
0