tp3076 National Semiconductor Corporation, tp3076 Datasheet - Page 10

• Manufacturer Part Number: tp3076
• Description: Combo Ii Programmable Pcm Codec/filter For Isdn And Digital Phone Applications
• Manufacturer: National Semiconductor Corporation

www.national.com
MASTER CLOCK TIMING
f
t
t
t
t
t
t
PCM INTERFACE TIMING
f
t
t
t
t
t
t
t
t
t
t
Symbol
MCLK
WMH
WML
RM
FM
HBM
WFL
BCLK
WBH
WBL
RB
FB
HBF
SFB
DBD
DBZ
DBT
ZBT
Electrical Characteristics
Note 12: “Absolute Maximum Ratings” indicate limits beyond which damage to the device may occur. Operating Ratings indicate conditions for which the device is
functional, but do not guarantee specific performance limits.
Note 13: See definitions and timing conventions section.
Timing Specifications
Unless otherwise noted, limits printed in BOLD characters are guaranteed for V
+70˚C by correlation with 100% electrical testing at T
tests and/or product design and characterization. All signals referenced to GND. Typicals specified at V
T
tion for test methods information.
A
= 25˚C. All timing parameters are measured at V
Frequency of MCLK
Period of MCLK High
Period of MCLK Low
Rise Time of MCLK
Fall Time of MCLK
HOLD Time, BCLK LOW
to MCLK HIGH
Period of FS
or FS
Frequency of BCLK
Period of BCLK High
Period of BCLK Low
Rise Time of BCLK
Fall Time of BCLK
Hold Time, BCLK Low
to FS
Setup Time, FS
High to BCLK Low
Delay Time, BCLK High
to Data Valid
Delay Time, BCLK Low to D
Disabled if FS
D
Low, or BCLK High to D
Disabled if FS
Delay Time, BCLK High to
TS
FS
BCLK High (Nondelayed mode); BCLK
High to TS
TRI-STATE Time, BCLK Low to
TS
to TS
BCLK High to TS
X
1 disabled if 8th BCLK
X
X
X
Low if FS
High to TS
High if FS
X/R
X
R
High if 8th BCLK Low, or
Low
High or Low
X
X
Low (delayed data mode)
X
X
X
X
Parameter
X
X/R
Low, FS
High
High, or
Low, FS
X
Low if
High if FS
X
X
X
1
Low to
Low
X
X
1
High
(Continued)
OH
Selection of Frequency is Programmable
(See Table 5)
Measured from V
Measured from V
Measured from V
Measured from V
Measured from V
May Vary from 64 kHz to 4096 kHz
in 8 kHz Increments
Measured from V
Measured from V
Measured from V
Measured from V
Load = 100 pF Plus 2 LSTTL Loads
D
at V
to Figure 4
Load = 100 pF Plus 2 LSTTL Loads
A
X
= 25˚C. All other limits are assured by correlation with other production
= 2.0V and V
1 disabled is measured
OL
or V
10
OH
according
Conditions
OL
IH
IL
IL
IH
IL
IH
IL
IL
IH
= 0.7V. See Definitions and Timing Conventions sec-
to V
to V
to V
to V
to V
to V
to V
to V
to V
IL
IH
IL
IL
IH
IH
IL
IH
IL
(Note 14)
(Note 14)
CC
= +5V
±
5%; V
BB
Min
80
80
50
64
80
80
30
30
15
15
1
= −5V
CC
1536
1544
2048
4096
Typ
512
= +5V, V
±
5%; T
4096
Max
30
30
30
30
80
80
60
60
A
BB
= 0˚C to
= −5V,
Period
MCLK
Units
kHz
kHz
kHz
kHz
kHz
kHz
ns
ns
ns
ns
ns
ns
ns
ns
ns
ns
ns
ns
ns
ns
ns