DS2149 MAXIM [Maxim Integrated Products], DS2149 Datasheet - Page 29

• Manufacturer Part Number: DS2149
• Description: 5V T1/J1 Line Interface Unit
• Manufacturer: MAXIM [Maxim Integrated Products]

AC CHARACTERISTICS: SERIAL PORT (MODE1 = 1)
(V
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 Tri-State
CS Inactive or SCLK to SDO Tri-State
Figure 12-1. Serial Bus Read Timing (MODE1 = 1)
Figure 12-2. Serial Bus Write Timing (MODE1 = 1)
DD
= 5.0V ±5%, T
SCLK
SCLK
SCLK
SDO
SDO
CS
SDI
CS
CS
PARAMETER
A
= -40°C to +85°C.)
t
t
CSS
SSS
LSB
Control Byte
HIGH-Z
HIGH-Z
t
SSH
(Figure 12-1
t
SRF
SYMBOL
MSB
and
29 of 32
t
t
t
t
t
t
t
t
t
t
t
CSS
SSS
SSH
SRF
SSV
SSH
CSH
SLH
LSC
SLH
CM
LSB
Figure
LSB
LSB
t
12-2)
SSV
Data Byte
t
SSV
MIN
200
250
50
50
50
50
t
LSC
TYP
MSB
100
100
MSB
t
MSB
LSC
t
LSC
t
t
CSH
CM
HIGH-Z
HIGH-Z
MAX
50
50
t
CSH
UNITS
ns
ns
ns
ns
ns
ns
ns
ns
ns
ns