EZ80190AZ050SC00TR Zilog, EZ80190AZ050SC00TR Datasheet - Page 125

• Manufacturer Part Number: EZ80190AZ050SC00TR
• Description: IC EZ80 ACCLAIM 50MHZ 100LQFP
• Manufacturer: Zilog

Specifications of EZ80190AZ050SC00TR

• Processor Type: eZ80
• Features: High Speed, Single-Cycle Instruction-Fetch
• Speed: 50MHz
• Voltage: 3.3V
• Mounting Type: Surface Mount
• Package / Case: 100-LQFP
• Lead Free Status / RoHS Status: Contains lead / RoHS non-compliant

Software Control of the MACC
PS006614-1208
Read DATA Bank
Accumulator
CALC Bank swapped
The Multiply-Accumulator is designed so that CPU software can set up a calculation by
writing to the MACC registers using a single OTI2R block output instruction. For details
refer to eZ80
this calculation may require writing to all of the MACC control registers, or just a partial
subset.
Similarly, the MACC is designed so that eZ80
calculation from the MACC Accumulator registers using a single INI2R block input
can define a new
calculation for the
with DATA Bank.
in accumulator.
Result ready
DATA Bank
DATA Bank
The eZ80
EMPTY
MACC.
DONE
®
®
CPU User Manual (UM0077). Depending upon the calculation required,
Figure 22. Simplified MACC Status Progression
Load DATA Bank
MACC completes
IN PROGRESS
operation with
CALC Bank
DATA Bank
CALC Bank.
Registers
READY
®
CPU software can read the results of a
DATA Bank swapped
to complete current
Waiting for MACC
with CALC Bank.
IN PROGRESS
MACC begins
DATA Bank
CALC Bank
calculation.
calculation.
READY
Product Specification
MACC completes
Multiply-Accumulator
operation with
CALC Bank.
eZ80190
115