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參數資料
型號: UDA1325
廠商: NXP Semiconductors N.V.
元件分類: Codec
英文描述: Universal Serial Bus USB CODEC
中文描述: 通用串行總線解碼器
文件頁數: 40/52頁
文件大小: 310K
代理商: UDA1325
1999 May 10
40
Philips Semiconductors
Preliminary specification
Universal Serial Bus (USB) CODEC
UDA1325
AC CHARACTERISTICS
V
DDE
= 5.0 V; V
DDI
= 3.3 V; T
amb
= 25
°
C; f
osc
= 48 MHz; f
s
= 44.1 kHz; unless otherwise specified.
SYMBOL
PARAMETER
CONDITIONS
MIN.
TYP.
MAX.
UNIT
Driver characteristics D+ and D
(full-speed mode)
f
o(s)
audio sample output frequency
t
r
rise time
t
f
fall time
t
rf(m)
rise/fall time matching (t
r
/t
f
)
V
cr
output signal crossover voltage
R
o(drive)
driver output resistance
Data source timings D+ and D
(full-speed mode)
f
i(s)
audio sample input frequency
f
fs(D)
full speed data rate
t
fr(D)
frame interval
t
J1(diff)
source differential jitter to next
transition
t
J2(diff)
source differential jitter for paired
transitions
t
W(EOP)
source end of packet width
t
EOP(diff)
differential to end of packet
transition skew
t
JR1
receiver data jitter tolerance to next
transition
t
JR2
receiver data jitter tolerance for
paired transitions
t
EOPR1
end of packet width at receiver
must reject as end of packet
t
EOPR2
end of packet width at receiver
must accept as end of packet
5
4
4
90
1.3
28
55
20
20
110
2.0
43
kHz
ns
ns
%
V
C
L
= 50 pF
C
L
= 50 pF
steady-state drive
5
11.97
0.9995
3.5
12.00
1.0000
0.0
55
12.03
1.0005
+3.5
kHz
Mbits/s
ms
ns
4.0
0.0
+4.0
ns
160
2.0
175
+5.0
ns
ns
18.5
0.0
+18.5
ns
9.0
0.0
+9.0
ns
40
ns
82
ns
Serial input/output data timing
f
s
f
i(WS)
t
r
t
f
t
BCK(H)
t
BCK(L)
t
s;DAT
t
h;DAT
t
s;WS
t
h;WS
system clock frequency
word selection input frequency
rise time
fall time
bit clock HIGH time
bit clock LOW time
data set-up time
data hold time
word selection set-up time
word selection hold time
5
55
55
10
20
20
10
12
55
20
20
MHz
kHz
ns
ns
ns
ns
ns
ns
ns
ns
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