參數資料
型號: SAA2003
廠商: NXP Semiconductors N.V.
元件分類: Codec
英文描述: Stereo filter and codec
中文描述: 過濾器和立體聲編解碼器
文件頁數: 7/44頁
文件大?。?/td> 176K
代理商: SAA2003
May 1994
15
Philips Semiconductors
Preliminary specication
Stereo lter and codec
SAA2003
Sub-band serial PASC interface
The sub-band serial interface carries the PASC serial data stream between the stereo filter codec and the drive processor
part of the DCC chip-set, and consists of the signals as shown in Table 8.
Table 8
Sub-band serial PASC interface signals.
The SAA2003 generates SBWS and SBCL in both decode and encoding modes. In decode both signals can be set to
inputs (slave mode) by bit 0 of the extended settings register. The filtered data interface timing is always derived from
the 24.576 MHz clock, regardless of the audio sampling frequency.
Table 9
Extended settings register.
Stereo and 2-channel mono encoding modes are available. Stereo, joint stereo and 2-channel mono decoding modes
are available. In decoding and encoding, 48 kHz, 44.1 kHz and 32 kHz sample frequencies can be used.
PIN
INPUT/OUTPUT
FUNCTION
FREQUENCY
SBDIR
input
sub-band data direction control
SBDA
input/output
sub-band serial data
1SBCL
input/output
sub-band bit clock
768 kHz
SBWS
input/output
sub-band word select
12 kHz
SBEF
input
sub-band data error ag
URDA
input
unreliable data ag
A3
A2
A1
A0
D3
D2
D1
D0
MODE
0
1
X
0
slave mode (default)
0
1
X
1
master mode
Fig.11 Transfer of sub-band PASC data.
32 bits
15 bits
1
0
1
2
0
1
0
2
0
3
1
6
1
7
1
8
SBWS
SBCL
SBDA
bit :
2
0
2
1
MEA649 - 2
MSB
SBEF
LSB
MSB
byte 0
byte 1
byte 2
1
9
2
1
3
1
4
1
5
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