Car Stereo System - Car Radio Digital Signal Processor User Manual

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P47 P48 H1
N 0x1F N 0x1F N + 1 0x1F
N N
10
8
4
3
2
1
UXCLK
UXDATA[7:0]
UXADDR[4:0]
UXCLAV
UXENB
UXSOC
9
P46P45
0 x1F
A. The UTOPIA Slave module has signals that are middle-level signals indicating a high-impedance state (i.e., the UXCLAV and UXSOC signals).
5
6
7
SM320C6455-EP
FIXED-POINT DIGITAL SIGNAL PROCESSOR
SPRS462B – SEPTEMBER 2007 – REVISED JANUARY 2008
Table 7-108. Timing Requirements for UTOPIA Slave Transmit (see Figure 7-76 )
-720
-850
A-1000/-1000
NO. UNIT
-1200
MIN MAX
2 t
su(UXAV-UXCH)
Setup time, UXADDR valid before UXCLK high 4 ns
3 t
h(UXCH-UXAV)
Hold time, UXADDR valid after UXCLK high 1 ns
8 t
su(UXENBL-UXCH)
Setup time, UXENB low before UXCLK high 4 ns
9 t
h(UXCH-UXENBL)
Hold time, UXENB low after UXCLK high 1 ns
Table 7-109. Switching Characteristics Over Recommended Operating Conditions for UTOPIA Slave
Transmit Cycles (see Figure 7-76 )
-720
-850
A-1000/-1000
NO. PARAMETER UNIT
-1200
MIN MAX
1 t
d(UXCH-UXDV)
Delay time, UXCLK high to UXDATA valid 3 12 ns
4 t
d(UXCH-UXCLAV)
Delay time, UXCLK high to UXCLAV driven active value 3 12 ns
5 t
d(UXCH-UXCLAVL)
Delay time, UXCLK high to UXCLAV driven inactive low 3 12 ns
6 t
d(UXCH-UXCLAVHZ)
Delay time, UXCLK high to UXCLAV going Hi-Z 9 18.5 ns
7 t
w(UXCLAVL-UXCLAVHZ)
Pulse duration (low), UXCLAV low to UXCLAV Hi-Z 3 ns
10 t
d(UXCH-UXSV)
Delay time, UXCLK high to UXSOC valid 3 12 ns
Figure 7-76. UTOPIA Slave Transmit Timing
(A)
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