ez80190 ZiLOG Semiconductor, ez80190 Datasheet - Page 145

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

PS006613-0306
Bit
Position
[2:0]
IN_SHIFT
Value Description
000
001
010
011
100
101
110
111
No left-shift is performed during writes to the MACC Accumulator
registers by the CPU.
MACC_ACx[39:0] = DATA_IN[39:0]
Writes to the MACC Accumulator registers by the CPU are left-
shifted by 1 bit with 1 NOISE bit filling the least significant bit.
MACC_ACx[39:0] = {DATA_IN[38:0], NOISE}
Writes to the MACC Accumulator registers by the CPU are left-
shifted by 2 bits with repeated NOISE bits filling the least
significant bits.
MACC_ACx[39:0] = {DATA_IN[37:0], 2{NOISE}}
Writes to the MACC Accumulator registers by the CPU are left-
shifted by 3 bits with repeated NOISE bits filling the least
significant bits.
MACC_ACx[39:0] = {DATA_IN[36:0], 3{NOISE}}
Writes to the MACC Accumulator registers by the CPU are left-
shifted by 4 bits with repeated NOISE bits filling the least
significant bits.
MACC_ACx[39:0] = {DATA_IN[35:0], 4{NOISE}}
Writes to the MACC Accumulator registers by the CPU are left-
shifted by 5 bits with repeated NOISE bits filling the least
significant bits.
MACC_ACx[39:0] = {DATA_IN[34:0], 5{NOISE}}
Writes to the MACC Accumulator registers by the CPU are left-
shifted by 6 bits with repeated NOISE bits filling the least
significant bits.
MACC_ACx[39:0] = {DATA_IN[33:0], 6{NOISE}}
Writes to the MACC Accumulator registers by the CPU are left-
shifted by 7 bits with repeated NOISE bits filling the least
significant bits.
MACC_ACx[39:0] = {DATA_IN[32:0], 7{NOISE}}
PRELIMINARY
eZ80190 Product Specification
Multiply-Accumulator
131