參數(shù)資料
型號(hào)： MC56603APV60
廠(chǎng)商： FREESCALE SEMICONDUCTOR INC
元件分類(lèi)： 數(shù)字信號(hào)處理
英文描述： 24-BIT, 60 MHz, OTHER DSP, PQFP144
封裝： PLASTIC, TQFP-144
文件頁(yè)數(shù)： 43/97頁(yè)
文件大小： 1080K
代理商： MC56603APV60
2-20
DSP56603A Technical Data Sheet
MOTOROLA
DSP56603A
AC Electrical Characteristics
interrupts or poll the RXDF flag, which indicates that data is available. This
assures that the data in the receive byte registers will be valid.
2. Overwriting Transmit Byte RegistersThe Host programmer should not
write to the transmit byte registers, TXH or TXL, unless the TXDE bit is set
indicating that the transmit byte registers are empty. This guarantees that the
transmit byte registers can transfer valid data to the HRX register.
3. Overwriting the Host VectorThe Host Vector register should be changed
only when the Host Command bit (HC) is clear. This guarantees that the
DSP56603A interrupt control logic can receive a stable vector.
Table 2-13
Host Interface Timing1, 2
Num
Characteristic
Symbol
Expression
60 MHz
Unit
Min
Max
301
Read data strobe assertion width3
HACK assertion width
TC + 16.5
33.2
ns
302
Read data strobe deassertion width3
HACK deassertion width
16.5
ns
303
Read data strobe deassertion width between two
consecutive Last Data Register reads, two
consecutive CVR reads, two consecutive ICR
reads, or two consecutive ISR reads3, 4, 5
2.5
TC + 11.0 52.7
ns
304
Write data strobe assertion width6
22.0
ns
305
Write data strobe deassertion width6
2.5
TC + 11.0 52.7
ns
306
HAS assertion width
16.5
ns
307
HAS deassertion to data strobe assertion7
0
ns
308
Host data input setup time before write data
strobe deassertion6
16.5
ns
309
Host data input hold time after write data strobe
deassertion6
5.5
ns
310
Read data strobe assertion to output data active
from high impedance3, 8
HACK assertion to output data active from high
impedance 8
5.0
ns
311
Read data strobe assertion to output data valid3
HACK assertion to output data valid
33.0
ns
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Freescale Semiconductor, Inc.
For More Information On This Product,
Go to: www.freescale.com
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