SAA2521GP Philips, SAA2521GP Datasheet - Page 20

• 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
t
w1
le
s1
h1
s2
h2
lc
hc
d1
d2
h5
S4
h6
> 550 ns
>
>
>
>
>
>
>
<
<
>
>
>
LTENA
LTCLK
LTCNT0/1
210 ns minimum LOW time LTENA prior to transfer
210 ns minimum LOW time LTCLK
50 ns set-up time LTCNT0, 1 before LTENA HIGH
210 ns set-up time LTENA before LTCLK LOW
210 ns minimum HIGH time LTCLK
210 ns hold time LTCNT0, 1 after LTENA HIGH
210 ns hold time LTENA after LTCLK HIGH
385 ns maximum delay LTDATA after LTENA HIGH
385 ns maximum delay LTDATA after LTCLK HIGH
145 ns hold time LTDATA after LTCLK HIGH
0 ns hold time LTDATA after LTENA LOW
210 ns set-up time LTCLK before LTENA HIGH
LTENA
LTCLK
LTDATA
LTCNT0/1
minimum time between two 8-bit transfers
bit :
t su4
t Le
t su1
Fig.17 SAA2521 to Microcontroller timing.
t su2
t
t h1
d1
Fig.16 16-bit transfers.
LTENA must remain HIGH
0
20
t
t
d2
W1
t cL
1
t cH
t h5
t h2
t h6
Preliminary specification
MEA657 - 2
SAA2521
MBC135 - 1