DSP56002RC40 Motorola Inc, DSP56002RC40 Datasheet - Page 45
![no-image](/images/no-image-200.jpg)
DSP56002RC40
Manufacturer Part Number
DSP56002RC40
Description
24-BIT DIGITAL SIGNAL PROCESSOR
Manufacturer
Motorola Inc
Datasheet
1.DSP56002RC40.pdf
(110 pages)
- Current page: 45 of 110
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SYNCHRONOUS SERIAL INTERFACE (SSI) TIMING
C
t
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
i ck s = Internal Clock, Synchronous Mode (Synchronous implies that
bl = bit length
wl = word length
MOTOROLA
SSICC
Num
L
80
81
82
84
85
86
87
88
= 50 pF + 2 TTL loads
= SSI clock cycle time
STD and SRD are two different clocks)
STD and SRD are the same clock)
Clock Cycle–t
Clock High Period
Clock Low Period
RXC Rising Edge to
FSR Out (bl) High
RXC Rising Edge to
FSR Out (bl) Low
RXC Rising Edge to
FSR Out (wl) High
RXC Rising Edge to
FSR Out (wl) Low
Data In Setup Time
Before RXC (SCK in
Synchronous Mode)
Falling Edge
Characteristics
SSICC
1
t
t
SSICC
SSICC
40 MHZ or 66 MHz
T
T
C
C
Min
15.8
4T
3T
/2 – 10.8
/2 – 10.8
3.3
—
—
—
—
—
—
—
—
13
+ T
+ T
Table 2-11 SSI Timing
DSP56002/D, Rev. 3
C
C
L
L
Max
40.8
25.8
35.8
25.8
35.8
20.8
35.8
20.8
—
—
—
—
—
—
—
—
—
Synchronous Serial Interface (SSI) Timing
T
T
T
T
Min
15.8
4T
3T
C
C
C
C
3.3
—
—
—
—
—
—
—
—
13
+ 5
+ 5
+ 5
+ 5
C
C
80 MHz
Max
25.8
25.8
20.8
20.8
—
—
—
—
—
—
30
30
30
30
—
—
—
Specifications
i ck a
i ck a
i ck a
i ck a
i ck a
Case
i ck s
x ck
x ck
x ck
x ck
x ck
x ck
x ck
x ck
i ck
i ck
i ck
Unit
2-19
ns
ns
ns
ns
ns
ns
ns
ns
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