NJU26109 NJRC [New Japan Radio], NJU26109 Datasheet - Page 14

• Manufacturer Part Number: NJU26109
• Description: NJU26100 Series Hardware Specification
• Manufacturer: NJRC [New Japan Radio]

SDIN
SCK
SDOUT
SSb
Table 5-2 4-Wire Serial Interface Timing Parameters
Note : *1 When the data-clock is less than 8 clocks, the input data is shifted to LSB side and is sent to the DSP
Input Data Rising Time
Input Data Falling Time
Serial Clock Rising Time
Serial Clock Falling Time
Serial Strobe Rising Time
Serial Strobe Falling Time
Serial Clock High Duration
Serial Clock Low Duration
Serial Clock Period
Serial Strobe Setup Time
Serial Strobe Hold Time
Serial Strobe Low Duration
Serial Strobe High Duration
Input Data Setup Time
Input Data Hold Time
Output Data Delay
(From SSb)
Output Data Delay
(From SCK)
Output Data Hold Time
Output Data Turn off Time (Hi-Z)
- 14 -
m
*2 When the data-clock is more than 8 clocks, the last 8 bit data becomes valid.
*3 After sending LSB data, SDOUT transmits the MSB data which is received via SDIN until SSb becomes
*4 SDOUT is Hi-Z in case of SSb = “High”. SDOUT is CMOS output in case of SSb = “Low”.
Hi-Z
a
SDOUT needs a pull-up resistor to prevent SDOUT from becoming floating level.
core at the transition of SSb=”High”.
“High”.
n
Parameter
b
d
7
o
MSB
e
7
f
c
g h
k
Fig. 5-1 4-Wire Serial Interface Timing
6
i
6
Symbol
5
t
t
t
t
t
t
t
t
t
t
t
t
t
t
t
MSDoh
t
t
t
t
MSDos
MSDov
MSDih
MSCa
MSCn
MSDis
MSDo
MSCc
MSSs
MSSh
MSSa
MSSn
MSDr
MSDf
MSCr
MSCf
MSSr
MSSf
5
n-o,CL=25pF
g-k(data-6),
g-k(data-7)
Timelines
CL=25pF
m-n
a-b
a-b
d-e
p-q
g-h
n-e
n-p
b-e
e-c
f-g
e-f
q-r
e-i
j-q
q-l
(V
1
DDO
1
=V
DDC
=V
Min.
250
100
50
50
30
40
20
20
0
0
-
-
-
-
-
-
-
-
-
-
DDR
LSB
0
=2.5V, V
j
Typ.
1.0
-
-
-
-
-
-
-
-
-
-
-
-
SSO
Note (3)
=V
p
SSC
Max.
100
100
100
100
100
100
50
50
40
=V
-
-
-
-
-
-
-
-
-
-
q
l
SSR
Hi-Z
=0V, Ta=25°C)
Units
r
Ver.2005-02-24
ns
ns
ns
ns
ns
ns
ns
ns
ns
ns
ns
µs
ns
ns
ns
ns
ns
ns
ns