參數(shù)資料
型號： PCM9211PTR
廠商： TEXAS INSTRUMENTS INC
元件分類： 網(wǎng)絡(luò)接口
英文描述： DATACOM, TOKEN RING TRANSCEIVER, PQFP48
封裝： GREEN, PLASTIC, LQFP-48
文件頁數(shù)： 46/121頁
文件大?。?/td> 1219K
代理商： PCM9211PTR
B
0L
W
0R
M
1L
W
1R
t
LATE
17±1BCK
BiphaseSignal(IN)
BFRAME(OUT)
LRCK(OUT)
(I S)
2
LRCK(OUT)
(AllexceptI S)
2
DATA(OUT)
BCKO
(OUT)
LRCKO
(OUT)
DOUT
(OUT)
SCKO
(OUT)
t
SCY
t
BCH
t
BCL
t
BCY
t
BCDO
t
CKLR
V
/2
DD
V
/2
DD
V
/2
DD
V
/2
DD
SBAS495 – JUNE 2010
www.ti.com
Figure 22 shows the latency time between the input biphase signal and LRCKO/DOUT. Figure 23 illustrates the
DIR decoded audio data output timing.
SYMBOL
DESCRIPTION
MIN
TYP
MAX
UNITS
tLATE
LRCKO/DOUT latency
4/fS
s
Figure 22. Latency Time Between Input Biphase and LRCKO/DOUT
SYMBOL
DESCRIPTION
MIN
TYP
MAX
UNITS
tSCY
System clock pulse cycle time
18
ns
tCKLR
Delay time of BCKO falling edge to LRCKO valid
–10
10
ns
tBCY
BCKO pulse cycle time
1/64fS
s
tBCH
BCKO pulse width high
60
ns
tBCL
BCKO pulse width low
60
ns
tBCDO
Delay time of BCKO falling edge to DOUT valid
–10
10
ns
tR
Rising time of all signals
5
ns
tF
Falling time of all signals
5
ns
NOTE: Load capacitance of LRCKO, BCKO, and DOUT pin is 20 pF. DOUT, LRCKO, and BCKO are synchronized with
SCKO.
Figure 23. DIR Decoded Audio Data Output Timing
30
Copyright 2010, Texas Instruments Incorporated
Product Folder Link(s): PCM9211
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