EZ80190AZ050SC00TR Zilog, EZ80190AZ050SC00TR Datasheet - Page 129

• 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

Table 59. State Progression of the MACC During Operation
PS006614-1208
EMPTY
EMPTY
EMPTY
EMPTY
DATA
Bank
Current State
EMPTY
IN
PROGRESS
IN
PROGRESS
DONE
CALC
Bank
1. Define a new calculation by loading the MACC
2. Any write to MACC_AC4 produces the same
1. Define a new calculation by loading the MACC
2. Any write to MACC_AC4 produces the same
If the MACC completes execution of the current
calculation, the CALC bank status changes from
IN PROGRESS to DONE.
Write a value of 80h to the MACC_STAT register
to force a swap of the CALC and DATA banks. The
CALC bank status is now EMPTY. The DATA bank
status changes to DONE indicating that it now
holds the result from the most recent MACC
calculation.
control registers using the OTI2R instruction.
When the OTI2R instruction completes and the
final write is to either MACC_CTL or any byte of
MACC_ACx, the banks swap and a new
calculation begins. The CALC bank status
changes from EMPTY to IN PROGRESS as it
begins the new calculation.
effect.
control registers using the OTI2R instruction.
When the OTI2R instruction completes and the
last write is to either MACC_CTL or any byte of
MACC_ACx, the DATA bank state changes from
EMPTY to READY. This change in status
indicates the DATA bank contains a new
calculation that is ready to execute as soon as
the MACC completes its current calculation.
effect.
Operation
Product Specification
EMPTY
READY
EMPTY
DONE
DATA
Bank
Next State
Multiply-Accumulator
PROGRESS
PROGRESS
EMPTY
DONE
CALC
Bank
eZ80190
IN
IN
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