SAA2520 Datasheet, PDF (19/36 Pages) NXP Semiconductors – Stereo filter and codec for MPEG layer 1 audio applications

Philips Semiconductors
Stereo filter and codec for MPEG layer 1
audio applications
Preliminary specification
SAA2520
SBWS
SBCL
SBDA
,
, _SBEF

,,

,,
, SBCL
0 1 2 3 4 5 6 7 8 9 10 11 12
Tsc
t _cL
t _cH
SBWS
SBDA
SBEF
tsu1 t _h1
t _h2
t _su2
MEA648 - 2
Fig.16 Sub-band I²S interface timing (slave mode - SBCL, SBWS and SBDA are input).
Notes to Fig.16
T_C
SBCL cycle time (see note 1)
t_CH
SBCL HIGH time
t_CL
SBCL LOW time
t_S1
SBWS, SBDA input set-up
before SBCL HIGH
t_H1
SBWS, SBDA input hold
after SBCL HIGH
t_S2
SBCL HIGH to SBEF valid
t_H2
SBEF hold after SBCL HIGH
Note 1:
Minimum at bit rate = 448 kB/s
Nominal at bit rate = 384 kB/s
Maximum at bit rate = 32 kB/s
6.86T to 96T ns (8T ns nominal)
≥ T + 30 ns
≥ T + 30 ns
≥ T + 30 ns
≥ 30 ns
≤ T - 30 ns
≥ 2T- 30 ns
August 1993
19