DS2148 Dallas Semiconducotr, DS2148 Datasheet - Page 69

• Manufacturer Part Number: DS2148
• Description: 5V E1/T1/J1 Line Interface
• Manufacturer: Dallas Semiconducotr

AC CHARACTERISTICS—SERIAL PORT
(BIS1 = 1, BIS0 = 0)
Setup Time CS* to SCLK
Setup Time SDI to SCLK
Hold Time SCLK to SDI
SCLK High/Low Time
SCLK Rise/Fall Time
SCLK to CS* Inactive
CS* Inactive Time
SCLK to SDO Valid
SCLK to SDO 3-State
CS* Inactive to SDO 3-State
See Figure 12-8
SERIAL BUS TIMING (BIS1 = 1, BIS0 = 0) Figure 12-8
NOTES:
1) OCES =1 and ICES = 0.
2) OCES = 0 and ICES = 1.
PARAMETER
SCLK
SCLK
SDO
CS*
SDI
1
2
t
t
SSS
CSS
LSB
t
HIGH Z
SSH
SYMBOL
t
t
t
t
t
t
t
t
t
t
CSH
CSS
SSH
SLH
SRF
LSC
SSV
SSH
SSS
CM
t
SRF
MSB
t
SLH
MIN
200
250
50
50
50
50
LSB
LSB
69 of 75
TYP
100
100
t
(-40°C to +85°C; V
SSV
MAX
50
50
MSB
t
MSB
LSC
t
SSH
t
CM
HIGH Z
t
CSH
UNITS
ns
ns
ns
ns
ns
ns
ns
ns
ns
ns
DD
= 5.0V ± 5%)
NOTES