AK2548 Datasheet, PDF (17/30 Pages) Asahi Kasei Microsystems – 7 channel E1 Transceiver

ASAHI KASEI
[AK2548]
AC CHARACTERISTICS(Serial Port)
Parameter
Symbol min
typ
SDI Setup Time
tp1
25
—
SDI Hold Time
tp2
25
—
SCLK Low Time
tp3
100
—
SCLK High Time
tp4
100
—
SCLK Rise Time
tp5
—
—
SCLK Fall Time
tp6
—
—
CS Setup Time
tp7
20
—
CS Hold Time
Tp8
20
—
CS Inactive Time
tp9
100
—
SCLK to SDO Valid
tp10
—
—
CS to SDO High Z
tp11
—
—
Notes) CL= 50pF. All of the timing is specified at 50%VDD.
max
—
—
—
—
15
15
—
—
—
40
40
Units Condition
ns
ns
ns
ns
ns
ns
ns
ns
ns
ns
Ns
Serial Port Input Timing
CS
SCLK
SDI
tp7 tp4 tp3
LSB
tp1 tp2
tp9
tp8
MSB
Serial Port Output Timing
CS
SCLK
SDO
123
High-Z
8 9 10
tp10
12
tp8
14 15 16
tp11
78
High-Z
tp5
tp6
SCLK
C0028-E-00
17
1999/9