DSP56001 View Datasheet(PDF) - Motorola => Freescale

Part Name

Description

Manufacturer

DSP56001

24-Bit General Purpose Digital Signal Processor

Motorola => Freescale 

DSP56001 Electrical Characteristics

AC Electrical Characteristics - SSI Timing

(Vcc = 5.0 Vdc + 10%, TJ = -40 to +105° C, CL = 50 pf + 1 TTL Load at 20.5 MHz and 27 MHz,

Vcc = 5.0 Vdc + 5%, TJ = -40 to +105° C, CL = 50 pf + 1 TTL Load at 33 MHz,

see SSI Figures 1 and 2)

cyc = Clock cycle = 1/2 instruction cycle = 2 T cycles

tSSICC = SSI clock cycle time

TXC (SCK Pin) = Transmit Clock

RXC (SC0 or SCK Pin) = Receive Clock

FST (SC2 Pin) = Transmit Frame Sync

FSR (SC1 or SC2 Pin) = Receive Frame Sync

i ck = Internal Clock

x ck = External Clock

g ck = Gated Clock

i ck a = Internal Clock, Asynchronous Mode (Asynchronous implies that TXC and

RXC are two different clocks)

i ck s = Internal Clock, Synchronous Mode (Synchronous implies that TXC and

RXC are the same clock)

bl = bit length

wl = word length

Num

Characteristics

20.5 MHz

Min

Max

80 Clock Cycle (see Note 1)

4 cyc

—

*

81 Clock High Period

2 cyc-20

—

*

82 Clock High Period

2 cyc-20

—

*

84 RXC Rising Edge to FSR Out (bl) High

x ck

—

80

i ck a

—

50

85 RXC Rising Edge to FSR Out (bl) Low

x ck

—

70

i ck a

—

40

86 RXC Rising Edge to FSR Out (wl) High

x ck

—

70

i ck a

—

40

87 RXC Rising Edge to FSR Out (wl) Low

x ck

—

70

i ck a

—

40

88 Data In Setup Time Before RXC (SCK

in Synchronous Mode) Falling Edge

x ck

15

—

i ck a

35

—

i ck s

25

—

89 Data In Hold Time After RXC Falling

Edge

x ck

35

—

i ck a

5

—

90 FSR Input (bl) High Before RXC Falling

Edge

x ck

15

—

i ck a

35

—

91 FSR Input (wl) High Before RXC

Falling Edge

x ck 20

—

i ck a

55

—

92 FSR Input Hold Time After RXC Falling

Edge

x ck

35

—

i ck a

5

—

27 MHz

Min

Max

4 cyc

—

*

2 cyc-15

—

*

2 cyc-15

—

*

—

61

—

38

—

54

—

31

—

54

—

31

—

54

—

31

12

—

27

—

19

—

27

—

4

—

12

—

27

—

15

—

42

—

27

—

4

—

33 MHz

Min

Max

4 cyc

—

*

2 cyc-13

—

*

2 cyc-13

—

*

—

48

—

31

Unit

ns

ns

ns

ns

ns

—

43

ns

—

25

ns

—

43

ns

—

25

ns

—

43

ns

—

25

ns

10

—

ns

22

—

ns

16

—

ns

22

—

ns

4

—

ns

10

—

ns

23

—

ns

13

—

ns

34

—

ns

22

—

ns

4

—

ns

MOTOROLA

28

DSP56001

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