SAA2521GP Philips, SAA2521GP Datasheet - Page 22

• Manufacturer Part Number: SAA2521GP
• Description: Masking threshold processor for MPEG layer 1 audio compression applications
• Manufacturer: Philips

Philips Semiconductors
August 1993
Masking threshold processor for MPEG
layer 1 audio compression applications
t
t
t
t
t
t
t
t
t
t
t
t
w2
le
s1
s2
h2
lc
hc
d1
d2
s4
h5
h6
> 600 ns
>
>
LTENC
LTCLKC
LTCNT0(C)/1(C)
>
>
>
>
<
<
>
>
>
400 ns minimum LOW time LTENC prior to transfer
210 ns minimum LOW time LTCLKC
400 ns set-up time LTCNT0, 1C before LTENC HIGH
200 ns set-up time LTENC before LTCLKC LOW
210 ns minimum HIGH time LTCLKC
900 ns set-up time LTCLKC before LTENC HIGH
400 ns hold time LTENC after LTCLKC HIGH
300 ns maximum delay LTDATAC after LTENC HIGH
300 ns maximum delay LTDATAC after LTCLKC HIGH
160 ns hold time after LTCLKCC HIGH
0 ns hold time LTDATAC after LTENC LOW
LTENC
LTCLKC
LTDATAC
LTCNT0(C)/1(C)
minimum time between two 8-bit transfers
bit :
t su4
t Le
t su1
Fig.21 SAA2520 to SAA2521 timing.
t su2
t
d1
Fig.20 16-bit transfers.
LTENC must remain HIGH
22
0
t
W2
t
d2
t cL
1
t cH
t h5
Preliminary specification
t h2
t h6
MBC140 - 2
SAA2521
MBC139