參數(shù)資料
型號(hào): MH89760BS
廠商: Mitel Networks Corporation
元件分類: 通信及網(wǎng)絡(luò)
英文描述: Ultraframer DS3/E3/DS2/E2/DS1/E1/DS0
中文描述: Ultraframer DS3/E3/DS2/E2/DS1/E1/DS0
文件頁數(shù): 28/38頁
文件大小: 846K
代理商: MH89760BS
4-82
MH89760B
Preliminary Information
NB: Frame Pulse is repeated every 125
μ
s in synchronization with the clock.
Timing is over recommended temperature & power supply voltages.
Typical figures are at 25
°
C and are for design aid only: not guaranteed and not subject to production testing.
Figure 19 - Clock & Frame Alignment for ST-BUS Streams
Figure 20 - Clock & Frame Pulse Timing for ST-BUS Streams
AC Electrical Characteristics
- Clock Timing (Figures 19 & 20)
Characteristics
Sym
Min
Typ
Max
Units
Test Conditions
1
C2i Clock Period
t
p20
t
W20
t
FPS
t
FPH
t
FPW
t
FPOD
t
TxSFH
t
TxSFS
400
488
600
ns
2
C2i Clock Width High or Low
200
244
300
ns
t
P20
= 488 ns
3
Frame Pulse Setup Time
50
ns
4
Frame Pulse Hold Time
50
ns
5
Frame Pulse Width
50
ns
6
RxSF Output Delay
125
ns
50 pF Load
7
TxSF Hold Time
0.5
124.5
μ
s
8
TxSF Setup Time
0.5
124.5
μ
s
F0i
RxSF
TxSF
C2i
ST-BUS
BIT CELLS
Frame 12/24
Frame 1
Frame 2
Bit
7
Bit
6
Bit
5
Bit
4
Bit
7
Bit
6
Bit
5
Bit
4
Bit
7
Bit
6
Bit
5
Bit
4
AA
AA
AA
AA
AAAA
AAAA
AAAA
AAAA
AAAA
AAAA
AAAA
AAAA
AAAA
AAAA
AAAA
AAAA
AAAA
AAAA
AAAA
AAAA
AAAA
AAAA
AAAA
AAAA
AAAA
AAAA
AAAA
AAAA
AAAA
AAAA
AAAA
AAAA
AAAA
AAAA
AAAA
AAAA
AAAA
AAAA
AAAA
AAAA
AAAA
AAAA
AAAA
AAAA
AAAA
AAAA
AAAA
AAAA
AAAA
AAAA
AAAA
AAAA
AAAA
AAAA
AAAA
AAAA
AAAA
AAAA
AAAA
AAAA
AAAA
AAAA
AAAA
AAAA
C2i
F0i
RxSF
F0i
C2i
TxSF
V
IH
V
IL
V
IH
V
IL
V
OH
V
OL
V
IH
V
IL
V
IH
V
IL
t
P20
t
W20
t
FPS
t
FPH
t
FPS
t
FPOD
t
FPOD
t
TxSFH
t
TxSFS
Frame 12/24
Frame 1
t
FPW
t
W20
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