參數(shù)資料
型號: T7264
英文描述: T7264 U-Interface 2B1Q Transceiver
中文描述: T7264 U型接口2B1Q收發(fā)器
文件頁數(shù): 37/54頁
文件大?。?/td> 876K
代理商: T7264
Data Sheet
April 1998
T7264 U-Interface 2B1Q Transceiver
Lucent Technologies Inc.
37
Timing Characteristics
Output Capacitance = 50 pF, T
A
= –40
°
C to +85
°
C, V
DD
= 5 V
±
5%, GND = 0 V, crystal frequency = 15.36 MHz.
Table 29. Clock Timing
(See Figures 25, 26, and 28.)
*
Includes the effect of phase steps generated by the digital phase-locked loop.
5-5184
Figure 25. Timing Diagram Referenced to F
5-5185
Figure 26. Timing Diagram Referenced to C
Symbol
F
C
RCLKEN
CKOUT
Parameter
Min
49.8
46
48
Typ
Max
50.2
54
52
Unit
%
%
%
8 kHz Duty Cycle
512 kHz Duty Cycle
80 kHz Duty Cycle
Duty Cycle:
In 7.68 MHz Mode
In 15.36 MHz Mode
Pulse Width (high)
In 10.24 MHz Mode
Rise or Fall Time
Clock (C) High to Frame Sync (F)
CKOUT Clock to RCLKEN Clock Enable
CKOUT Clock to Frame Sync (F)
Receive Data (DI) Setup & Hold Time
Clock (C) High to Data (DO) Valid
CKOUT Clock Rise or Fall
Clock (C) High to Out of Sync OSYNC Valid
45
40
23*
–15
50
30
15
55
60
52*
15
25
50
50
60
%
%
%
ns
ns
ns
ns
ns
ns
ns
ns
tR1, tF1
tCHFH, tFHCH
tRCHRCH
tCOLFH
tDIVCL, tCLDIZ
tCHDOV
tR2, tF2
tCHOSV
F
CKOUT
tCOLFH
tR2
C
tFHCH
tF1
tF1
tR1
tF2
RCLKEN
tF1
tR1
tRCHRCH
tCHFH
C
DO
tCHDOV
DI
tDIVCL
tCLDIZ
OSYNC
tCHOSV
tDIVCL
tCLDIZ
F
BIT 1
BIT 1 OF B1 DATA
BIT 2
BIT 2 OF B1 DATA
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