EZ80190AZ050SC00TR Zilog, EZ80190AZ050SC00TR Datasheet - Page 134
![IC EZ80 ACCLAIM 50MHZ 100LQFP](/photos/6/76/67664/269-100-lqfp_sml.jpg)
EZ80190AZ050SC00TR
Manufacturer Part Number
EZ80190AZ050SC00TR
Description
IC EZ80 ACCLAIM 50MHZ 100LQFP
Manufacturer
Zilog
Datasheet
1.EZ80190AZ050SG.pdf
(221 pages)
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
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Recommended Operation
PS006614-1208
Setting Up A New Calculation
Retrieve A Calculation
4. Read the fourth byte from the MACC Accumulator
5. Read the MSB from the MACC Accumulator
In Example 2, notice that the upper 3 bits of the final read contain copies of the sign bit (in
this example, the sign bit is 0, which represents a positive number).
The following procedure sets up a new calculation.
1. Load the data into the MACC’s x and y RAM spaces.
2. Read the status register, MACC_STAT. If the DATA bank status is EMPTY or DONE,
3. Use the OTI2R instruction to load the new calculation. Registers to be written may
4. If the MACC is ready to begin a new calculation (CALC bank is EMPTY or DONE),
The following procedure retrieves the results of a calculation.
1. Read the status register. If the Multiply-Accumulator has not completed the previous
DATA_OUT[7:0] = MACC_AC3[7:0] = MACC Accumulator [34:27]
DATA_OUT[7:0] = MACC_AC4[7:0] = {000b, MACC Accumulator [39:35]}
a new calculation can be written to the DATA bank registers. If the DATA bank status
is DONE, the result currently available in the MACC Accumulator registers are lost if
not read prior to a write.
include nearly any combination of MACC_xSTART, MACC_xEND,
MACC_xRELOAD, MACC_ySTART, MACC_yEND, MACC_yRELOAD,
MACC_LENGTH, MACC_CTL, and MACC_ACx. If the OTI2R instruction is set up
to end with either MACC_CTL or any of the MACC_ACx registers, the DATA bank
status changes to READY.
the banks are automatically switched to begin execution. The equation that is set up in
the DATA bank is transferred to the CALC bank. The CALC bank status changes to
IN PROGRESS.
calculation provided, the application must wait until the Multiply-Accumulator com-
pletes the calculation, at which time the CALC bank status changes to DONE.
Product Specification
Multiply-Accumulator
eZ80190
124
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