XRT75R03 Datasheet, PDF (42/92 Pages) Exar Corporation – THREE CHANNEL E3/DS3/STS-1 LINE INTERFACE UNIT WITH JITTER ATTENUATOR

XRT75R03
REV. 1.0.7
xr
THREE CHANNEL E3/DS3/STS-1 LINE INTERFACE UNIT WITH JITTER ATTENUATOR
FIGURE 12. TIMING DIAGRAM FOR THE MICROPROCESSOR SERIAL INTERFACE
CS
SCLK
SDI
t
21
t
22
t
23
R/W
t
26
t
24
t
25
A0
A1
t
28
t
27
CS
SCLK
SDO
t
29
Hi-Z
SDI
t
30
D0
D1
Don’t Care (Read mode)
t
32
D2
t
31
D7
TABLE 8: MICROPROCESSOR SERIAL INTERFACE TIMINGS ( T_A = 25⁰C, V_DD=3.3V± 5% AND LOAD = 10PF)
SYMBOL
PARAMETER
MIN.
TYP.
MAX
UNITS
t₂₁ CS Low to Rising Edge of SClk
5
ns
t₂₂ SDI to Rising Edge of SClk
5
ns
t₂₃ SDI to Rising Edge of SClk Hold Time
5
ns
t₂₄ SClk "Low" Time
50
ns
t₂₅ SClk "High" Time
50
ns
t₂₆ SClk Period
100
ns
t₂₇ Falling Edge of SClk to rising edge of CS
0
ns
t₂₈ CS Inactive Time
50
ns
t₂₉ Falling Edge of SClk to SDO Valid Time
20
ns
t₃₀ Falling Edge of SClk to SDO Invalid Time
10
ns
t₃₁ Rising edge of CS to High Z
25
ns
t₃₂ Rise/Fall time of SDO Output
5
ns
39