參數(shù)資料
型號(hào): T7230A
廠商: Lineage Power
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): 2/110頁
文件大?。?/td> 752K
代理商: T7230A
Device Advisory
July 1998
T7230A Device Advisory for Version 1.0 and 2.0 of the Device
2
Lucent Technologies Inc.
Advisory Items
(continued)
Table 1. MotorolaMicroprocessor Interface I/O Timing Specification
(See Figure 1.)
Table 2. Concentration Highway Clock
(See Figure 2.)
* To meet DS1 and CEPT timing requirements, these signals must be derived from clocks having
±
50 ppm tolerances.
Table 3. Concentration Highway I/O Timing Specification
(See Figure 2.)
Symbol
Parameter
Width
Min
150
100
50
Setup
Min
0
50
25
Hold
Min
0
25
25
Delay
Max
90
20
20
20
25
20
Unit
T1
T2
T3
T4
T5
T6
T7
T8
T9
T10
T11
T12
T13
T14
T15
Address Strobe (AS) Asserted
Address Valid to AS Asserted
AS Deasserted to Address Invalid
AS Address Valid to DS Asserted
R/W to DS Asserted
Read Data Strobe DS Asserted
DS Asserted to Data Valid
DS Deassert to Data Valid
DS Assert to DTACK Assert
DS Deassert to DTACK Deassert
AS Assert to R/W
DS Deassert to R/W Deassert
DS Deassert to Data Invalid
Write Data Strobe DS Asserted
DS Deassert to DTACK Deassert
ns
ns
ns
ns
ns
ns
ns
ns
ns
ns
ns
ns
ns
ns
ns
Clock
Name
Symbol
Period (ns)
T
rise
typ
(ns)
T
fall
typ
(ns)
Duty Cycle (ns)
Min
High
217
108
54
Mode
Min
Low
217
108
54
CLKXR*
T1
488
244
122
10
10
10
10
10
10
All
All
All
Symbol
Parameter
Setup
Min
30
25
Hold
Min
45
25
Delay
Max
45
65
80
Unit
T2
T3
T4
T5
T6
T7
FS Valid to CLKXR Edge
FS Hold from CLKXR Edge
CLKXR Edge to Valid OFS
DRA, DRB Valid to CLKXR Edge
CLKXR Edge to Valid DXA, DXB
CLKXR Edge to Valid FRBIT, RSFSYN, and
TSFSYN
DRA, DRB to 3-state
CLKXR Edge to Valid TSCA, TSCB
ns
ns
ns
ns
ns
ns
T8
T9
65
70
ns
ns
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