CDB61574 Cirrus Logic, Inc., CDB61574 Datasheet - Page 5

• Manufacturer Part Number: CDB61574
• Description: T1/e1 LINE Interface
• Manufacturer: Cirrus Logic, Inc.

T1 SWITCHING CHARACTERISTICS
GND = 0V; Inputs: Logic 0 = 0V, Logic 1 = RV+; See Figures 1, 2, & 3)
Notes: 25. Crystal must meet specifications described in CXT6176/CXT8192 data sheet.
E1 SWITCHING CHARACTERISTICS
GND = 0V; Inputs: Logic 0 = 0V, Logic 1 = RV+; See Figures 1, 2, & 3)
DS155PP2
Crystal Frequency
TCLK Frequency
ACLKI Frequency
RCLK Duty Cycle
Rise Time, All Digital Outputs
Fall Time, All Digital Outputs
TPOS/TNEG (TDATA) to TCLK Falling Setup Time
TCLK Falling to TPOS/TNEG (TDATA) Hold Time
RPOS/RNEG Valid Before RCLK Falling
RDATA Valid Before RCLK Falling
RPOS/RNEG Valid Before RCLK Rising
RPOS/RNEG Valid After RCLK Falling
RDATA Valid After RCLK Falling
RPOS/RNEG Valid After RCLK Rising
Crystal Frequency
TCLK Frequency
TCLK Duty Cycle for LEN2/1/0 = 0/0/0
ACLKI Frequency
RCLK Duty Cycle
Rise Time, All Digital Outputs
Fall Time, All Digital Outputs
TPOS/TNEG (TDATA) to TCLK Falling Setup Time
TCLK Falling to TPOS/TNEG (TDATA) Hold Time
RPOS/RNEG Valid Before RCLK Falling
RDATA Valid Before RCLK Falling
RPOS/RNEG Valid Before RCLK Rising
RPOS/RNEG Valid After RCLK Falling
RDATA Valid After RCLK Falling
RPOS/RNEG Valid After RCLK Rising
26. ACLKI provided by an external source or TCLK.
27. RCLK duty cycle will be 62.5% or 37.5% when jitter attenuator limits are reached.
28. At max load of 1.6 mA and 50 pF.
29. Host Mode (CLKE = 1).
30. Extended Hardware Mode.
31. Hardware Mode, or Host Mode (CLKE = 0)
32. The transmitted pulse width does not depend on the TCLK duty cycle.
Parameter
Parameter
(Note 28)
(Note 29)
(Note 30)
(Note 31)
(Note 28)
(Note 29)
(Note 30)
(Note 31)
(Note 25)
(Note 26)
(Note 27) t
(Note 28)
(Note 29)
(Note 30)
(Note 31)
(Note 25)
(Note 32) t
(Note 26)
(Note 27) t
(Note 28)
(Note 29)
(Note 30)
(Note 31)
(TA = -40 C to 85 C; TV+, RV+ = 5.0V 5%;
(TA = -40 C to 85 C; TV+, RV+ = 5.0V 5%;
pwh1
pwh2
pwh1
Symbol
Symbol
f
f
t
t
t
t
t
t
t
t
f
f
aclki
aclki
t
t
t
t
t
t
t
t
su2
su1
su1
su1
su2
su1
su1
su1
tclk
tclk
f
h2
h1
h1
h1
f
h2
h1
h1
h1
t
t
t
t
c
c
r
f
r
f
/t
/t
/t
pw1
pw2
pw1
Min
150
150
150
150
150
150
Min
100
100
100
100
100
100
45
25
25
40
45
25
25
-
-
-
-
-
-
-
-
-
-
6.176000
8.192000
1.544
1.544
2.048
2.048
Typ
274
274
274
274
274
274
Typ
194
194
194
194
194
194
50
50
50
-
-
-
-
-
-
-
-
CS61577
Max
Max
55
85
85
60
55
85
85
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
Units
Units
MHz
MHz
MHz
MHz
MHz
MHz
ns
ns
ns
ns
ns
ns
ns
ns
ns
ns
ns
ns
ns
ns
ns
ns
ns
ns
ns
ns
%
%
%
5