Switching Characteristics for Host mode
Value
Characteristic
Symbol
Units
Conditions
Min. Max.
tDSH
tHSU
tRA
hold time after
low
20
0
5
10
30
50
0
0
0
0
ns
ns
ns
ns
ns
ns
ns
ns
ns
ns
ns
ns
ns
Only applicable for Read ops and if
is used
REPLY
DS
REPLY
Host address/data setup time
Read setup time to prevent Write
Host signal hold time
Only applicable if
is used (Note 1)
REPLY
tHH
Must always be guaranteed
No clocks are needed in
tDEL
tEXP
tCSU
tCH
tPSU
tPH
tPCH
tACC
tRSU
Expansion in to data out in
mode
mode
PROG
low (Note 2)
PROG
Delay from
low to
PC1
Greater than tDEL under all conditions
DS
setup time
hold time
CE
CE
setup time
hold time
PROG
PROG
high delay after
high
50
50
5
Defines
high time
DS
DS
PC1
Coefficient read time
From Master or Single device
REPLY
Coefficients valid time before
NOTES
1. If REPLY is not used, time is referenced to the rising edge of DS and when set up must be N3 DEL
t
for N devices.
2. Equivalent to PC0 to PC1 delay
DATUM
tWAIT > tPCH
DS
CE
tCSU
tCH
tPSU
tPH
PROG
tACC
COEFFICIENT OUTPUT, X7:0
tEXP
tRSU
tPCH
PC1 FROM MASTER OR SINGLE DEVICE
tDSH
PC1 FROM LAST DEVICE (REPLY)
R/W FROM HOST
tRA
tHH
tHSU
VALID
ADDRESS/DATA FROM HOST
tDEL
HOST DATA OUTPUT FROM FIRST DEVICE
VALID
Fig. 10 Host timing
18
MITEL [ MITEL NETWORKS CORPORATION ]
