English
Language : 

SAA7335 Datasheet, PDF (26/36 Pages) NXP Semiconductors – DSP for CD and DVD-ROM systems
◁
Philips Semiconductors
DSP for CD and DVD-ROM systems
Preliminary specification
SAA7335
SYMBOL
PARAMETER
CONDITIONS
MIN.
TYP.
External RAM timing (see Figs 18 and 20)
tAV-DV
tOE-DV
tW(W)
tsu(A)
th(A)
tsu(D-EW)
th(D-EW)
tOE-DA
tOD-DI
address valid to data valid
output enable to data valid
write pulse width
address set-up before start of write
address hold after end of write
data set-up to end of write
data hold after end of write
output enable to data active
output disable to data inactive
Microcontroller interface timing (see Figs 18 and 20)
−
tbf
−
tbf
−
tbf
−
tbf
−
tbf
−
tbf
−
tbf
−
tbf
−
tbf
INPUT ALE
tsu(A-ALE)
th(A-ALE)
tALEL
address set-up before ALE LOW
address hold after ALE LOW
input LOW time
tALEH
input HIGH time
td(ALEL-WRL)
tr
tf
delay time ALE LOW to WR LOW
rise time
fall time
INPUTS RDI AND WRI
tIL(R/W)
input LOW time
tIH(R/W)
input HIGH time
tr
rise time
tf
fall time
READ MODE
td(RLDV)
delay time RD LOW to DA0 to DA7
valid
td(RHDX)
delay time RD HIGH to DA0 to DA7
high-impedance
WRITE MODE
tsu(QVWX)
set-up time WR LOW to
DA0 to DA7
th(WHQX)
hold time WR HIGH to DA0 to DA7
3-state
25
−
25
−
1 × ADC −
CLK + 15
1 × ADC −
CLK + 15
−
−
−
−
−
−
1 × ADC −
CLK + 15
1 × ADC −
CLK + 15
−
−
−
−
2 × ADC −
CLK + 35
15
−
−
−
2 × ADC −
CLK + 25
Notes
1. Timing reference voltage levels are 0.8 V and VDDD − 0.8 V.
2. Negative set-up time means that data may change after clock transition.
MAX.
−
−
−
−
−
−
−
−
−
−
−
−
−
−
−
240
−
−
−
240
−
−
−
−
UNIT
ns
ns
ns
ns
ns
ns
ns
ns
ns
ns
ns
ns
ns
ns
ns
ns
ns
ns
ns
ns
ns
ns
ns
ns
1997 Aug 11
26
 ▷