參數(shù)資料
型號(hào): TMS320AV110
廠商: Texas Instruments, Inc.
英文描述: MPEG Audio Decoder(MPEG音頻譯碼器)
中文描述: MPEG音頻解碼器(的MPEG音頻譯碼器)
文件頁數(shù): 10/38頁
文件大?。?/td> 796K
代理商: TMS320AV110
TMS320AV110
MPEG AUDIO DECODER
SCSS013C – MAY 1993 – REVISED AUGUST 1995
10
POST OFFICE BOX 655303
DALLAS, TEXAS 75265
MPEG audio data input
bit-serial data input
Bit-serial data input is performed using the serial data input (SIN) and the data strobe input (DSTRB) (see
Figure 2). Data is set up on SIN and strobed into the chip on the rising edge of DSTRB. Audio data transfer to
the ’AV110 is requested by assertion of the request line (REQ) signaling that the ’AV110 is ready to accept data
and is awaiting service.
’AV110 CONTROL REGISTER
SIN EN
SIN_EN
Serial input enable
0 = Parallel (byte) data input (see Figure 3)
1 = Serial (bit) data input (see Figure 2)
REQ
SIN
DSTRB
tsu1
I
O
tsu2
tw1
1/fclock
th1
MSB
MSB–1
Figure 2. Bit-Serial Data-Input Timing
In bit-serial data-input mode, any of the following conditions will cause REQ to go high:
RESET goes active.
Restart is initiated.
The input buffer is full.
If the input buffer becomes full, the REQ output goes high asynchronous to DSTRB. After REQ goes high, two
additional data bits can be strobed into the ’AV110 on the rising edge of DSTRB.
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