Rainbow Electronics DS26504 - Manual (Page 121)

DS26504 T1/E1/J1/64KCC BITS Element
121 of 128
20.3 Serial Bus
Table 20-3. AC Characteristics, Serial Bus
(V
DD
= 3.3V ±5%, T
A
= 0°C to +70°C for DS26504L; V
DD
= 3.3V ±5%, T
A
= -40°C to +85°C for
DS26504LN.) (Note 1) ( Figure 20-8 and Figure 20-9 )
CHARACTERISTIC (Note 3) SYMBOL MIN MAX UNITS DIAGRAM
NUMBER
(Note 2)
Operating Frequency
Slave
f
BUS(S)
10 MHz
1 Cycle Time: Slave t
CYC(S)
100 — ns
2 Enable Lead Time t
LEAD(S)
15 — ns
3 Enable Lag Time t
LAG(S)
15 — ns
4
Clock (CLK) High Time
Slave
t
CLKH(S)
50 — ns
5
Clock (CLK) Low Time
Slave
t
CLKL(S)
50 — ns
6
Data Setup Time (inputs)
Slave
t
SU(S)
5 — ns
7
Data Hold Time (inputs)
Slave
t
H(S)
15 — ns
CPHA = 0 t
A(CP0)
0 40
8
Access Time, Slave
(Note 4)
CPHA = 1 t
A(CP1)
0 20
ns
9 Disable Time, Slave (Note 5) t
DIS(S)
— 25 ns
10
Data Valid Time, After Enable Edge
Slave (Note 6)
t
V(S)
— 40 ns
11
Data Hold Time, Outputs, After Enable Edge
Slave
t
HD(S)
5 — ns
Note 1: The timing parameters in this table are guaranteed by design (GBD).
Note 2: Numbers refer to dimensions in Figure 20-8 and Figure 20-9 .
Note 3: All timing is shown with respect to 20% V
DD
and 70% V
DD
, unless otherwise noted. 100pF load on all SPI pins.
Note 4: Time to data active from high-impedance state.
Note 5: Hold time to high-impedance state.
Note 6: With 100pF on all SPI pins.