Datasheet

DS21Q59 Quad E1 Transceiver
72 of 76
26.5 Transmit AC Characteristics
Table 26-E. AC Characteristics—Transmit
(V
DD
= 3.3V ±5%, T
A
= 0°C to +70°C for DS21Q59L; V
DD
= 3.3V ±5%, T
A
= -40°C to +85°C for DS21Q59LN.)
(Figure 26-11
and Figure 26-12)
PARAMETER SYMBOL CONDITIONS MIN TYP MAX UNITS
(Note 1) 648
TCLK Period t
CP
(Note 2) 488
ns
t
CH
20 0.5 t
CP
TCLK Pulse Width
t
CL
20 0.5 t
CP
ns
(Note 1) 648
(Note 2) 488
(Note 3) 244
(Note 4) 122
SYSCLK Period t
SP
(Note 5) 61
ns
t
SH
20 0.5 t
SP
SYSCLK Pulse Width
t
SL
20 0.5 t
SP
ns
TSYNC Setup to TCLK t
SU
20 ns
TSYNC Pulse Width t
PW
50 ns
TSER Setup to TCLK or SYSCLK
Falling
t
SU
20 ns
TSER Hold from TCLK or
SYSCLK Falling
t
HD
20 ns
TCLK Rise and Fall Times t
R
, t
F
25 ns
Note 1: SYSCLK = 1.544MHz.
Note 2: SYSCLK = 2.048MHz.
Note 3: SYSCLK = 4.096MHz.
Note 4: SYSCLK = 8.192MHz.
Note 5: SYSCLK = 16.384MHz.