參數(shù)資料
型號: MT8979
廠商: Mitel Networks Corporation
元件分類: 通信及網(wǎng)絡
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): 21/26頁
文件大?。?/td> 340K
代理商: MT8979
ISO-CMOS
MT8979
4-181
Characteristics are for clocked operation over the ranges of recommended operating temperature and supply voltage.
Typical figures are at 25°C and are for design aid only: not guaranteed and not subject to production testing.
* 256 t
P20
- 100ns
Figure 19 - Functional Timing for Receive Multiframe Clocks
Figure 20 - Functional Timing for Transmit Multiframe Clock
Figure 21 - Clock and Frame Timing for 2048 kbit/s ST-BUS Streams
Note 1: These two signals do not have a defined phase relationship.
AC Electrical Characteristics
- Multiframe Clock Timing (Figure 21)
Characteristics
Sym
Min
Typ
Max
Units
Test Conditions
1
Receive Multiframe Output Delay
t
RMFD
150
ns
50 pF
2
Transmit Multiframe Setup Time
t
TMFS
50
ns
3
Transmit Multiframe Hold Time
t
TMFH
50
*
ns
4
Tx Multiframe to C2 Setup Time
t
MF2S
100
ns
DSTo
Bit Cells
F0i
C2i
RxMF
Bit 7
Bit 6
Bit 5
Bit 4
Bit 0
Bit 7
Bit 6
Bit 5
Bit 4
Bit 0
Bit 7
Frame 0
Frame 15
F0i
C2i
TxMF
DSTi
Bit Cells
Bit 7
Bit 6
Bit 5
Bit 4
Bit 0
Bit 7
Bit 6
Bit 5
Bit 4
Bit 0
Bit 7
Frame 0
Frame N
F0i
C2i
RxMF
(1)
TxMF
(1)
t
RMFD
t
TMFS
t
MF2S
t
TMFH
t
RMFD
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