XRT83VSH28 Datasheet, PDF (44/74 Pages) Exar Corporation – 8-CHANNEL E1 SHORT-HAUL LINE INTERFACE UNIT

XRT83VSH28
PRELIMINARY
8-CHANNEL E1 SHORT-HAUL LINE INTERFACE UNIT
FIGURE 31. TIMING DIAGRAM FOR THE MICROPROCESSOR SERIAL INTERFACE
CS
SCLK
SDI
t21
t₂₂
t23
ADDR 6
t26
t24
t25
ADDR 7
R/w
REV. P1.0.0
t28
CS
SCLK
t29
SDO _Hi-Z
D0
D1
D2
Don’t Care (Read mode)
SDI
t31
D7
TABLE 9: 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
20
ns
t₂₅ SClk "High" Time
t₂₆ SClk Period
t₂₈ CS Inactive Time
20
ns
40
ns
40
ns
t₂₉ Falling Edge of SClk to SDO Valid Time
t₃₁ Rising edge of CS to High Z
5
ns
5
ns
41