ez80190 ZiLOG Semiconductor, ez80190 Datasheet - Page 132

• Manufacturer Part Number: ez80190
• Description: Ez80190 Microprocessor
• Manufacturer: ZiLOG Semiconductor

PS006613-0306
DONE
DONE
DONE
DONE
DATA
Bank
Current State
IN_SHIFT and OUT_SHIFT
PROGRESS
PROGRESS
Table 59. State Progression of the MACC During Operation (Continued)
EMPTY
DONE
CALC
Bank
The Multiply-Accumulator on the eZ80190 device features two additional func-
tions, IN_SHIFT and OUT_SHIFT, that can be useful in many DSP operations.
Both of these optional functions are controlled by the MACC Control register,
MACC_CTL.
IN
IN
Operation
1. Read the result from the MACC Accumulator
2. Any read from MACC_AC4 produces the same
3. Any write to any MACC register except for
If the MACC completes execution of the current
calculation, the CALC bank status changes from
IN PROGRESS to DONE.
1. Read the result from the MACC Accumulator
2. Any read from MACC_AC4 produces the same
3. Any write to any MACC register except for
1. Read the result from the MACC Accumulator
2. Any read from MACC_AC4 produces the same
3. Any write to any MACC register except for
registers using the INI2R instruction. When the
INI2R instruction completes and the last read is
from any byte of MACC_ACx, the DATA bank
status changes from DONE to EMPTY.
effect.
MAC_STAT produces the same effect.
registers using the INI2R instruction. When the
INI2R instruction completes and the last read is
from any byte of MACC_ACx, the DATA bank
status changes from DONE to EMPTY.
effect.
MAC_STAT produces the same effect.
registers using the INI2R instruction. When the
INI2R instruction completes and the last read is
from any byte of MACC_ACx, the DATA bank
status changes from DONE to EMPTY.
effect.
MAC_STAT produces the same effect.
PRELIMINARY
eZ80190 Product Specification
EMPTY
EMPTY
EMPTY
DONE
DATA
Bank
Next State
Multiply-Accumulator
PROGRESS
EMPTY
DONE
DONE
CALC
Bank
IN
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