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Номер произв CS8401A
Описание Digital Audio Interface Transmitter
Производители Crystal Semiconductor
логотип Crystal Semiconductor логотип 



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CS8401A Даташит, Описание, Даташиты
Semiconductor Corporation
CS8401A CS8402A
Digital Audio Interface Transmitter
Features
General Description
Monolithic Digital Audio Interface
The CS8401/2A are monolithic CMOS devices which
encode and transmit audio data according to the
Transmitter
AES/EBU, IEC 958, S/PDIF, & EIAJ CP-340 interface
Supports: AES/EBU, IEC 958,
S/PDIF, & EIAJ CP-340
standards. The CS8401/2A accept audio and digital
data, which is then multiplexed, encoded and driven
onto a cable. The audio serial port is double buffered
Professional and Consumer Formats and capable of supporting a wide variety of formats.
Host Mode and Stand Alone Modes
Generates CRC Codes and Parity Bits
The CS8401A has a configurable internal buffer mem-
ory, loaded via a parallel port, which may be used to
buffer channel status, auxiliary data, and/or user data.
On-Chip RS422 Line Driver
The CS8402A multiplexes the channel, user, and valid-
ity data directly from serial input pins with dedicated
Configurable Buffer Memory (CS8401A) input pins for the most important channel status bits.
Transparent Mode Allows Direct
Connection of CS8402A and CS8412
or CS8401A and CS8411A
ORDERING INFORMATION:
TABLE OF CONTENTS:
page 30
page 31
CS8401A
SCK
FSYNC
SDATA
6
7
8
Audio
Serial Port
INT
15
CS
RD/WR
14
16
Configurable
Buffer
A4 - A0
5 Memory
D7- D0
8
MUX
MCK
5
Prescaler
RS422 Driver
20 TXP
17
TXN
CS8402A
SCK
FSYNC
SDATA
6
7
8
C 10
U 11
V9
M2 M1 M0
23 22 21
Audio
Serial Port
Registers
MUX
7
MCK
5
RST
16
RS422 Driver
20 TXP
17 TXN
Dedicated Channel
Status Bits
15 24
CBL TRNPT
Crystal Semiconductor Corporation
P.O. Box 17847, Austin, TX 78760
(512) 445-7222 FAX: (512) 445-7581
NOV ’93
DS60F1
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CS8401A Даташит, Описание, Даташиты
CS8401A CS8402A
ABSOLUTE MAXIMUM RATINGS (GND = 0V, all voltages with respect to ground.)
DC Power Supply
Parameter
Symbol
VD+
Min
Max
6.0
Input Current, Any Pin Except Supply
Note 1
Iin
Digital Input Voltage
VIND
Ambient Operating Temperature (power applied)
TA
Storage Temperature
Tstg
Notes: 1. Transient currents of up to 100 mA will not cause SCR latch-up.
-
-0.3
-55
-65
±10
VD+
125
150
WARNING: Operation at or beyond these limits may result in permanent damage to the device.
Normal operation is not guaranteed at these extremes.
Units
V
mA
V
°C
°C
RECOMMENDED OPERATING CONDITIONS
(GND = 0V; all voltages with respect to ground)
Parameter
Symbol
Min
Typ
Max
DC Voltage
VD+ 4.5 5.0 5.5
Supply Current
Note 2
IDD
1.5 5
Ambient Operating Temperature: CS8401/2A-CP or -CS Note 3
CS8401/2A-IP or -IS
TA
0 25
-40
70
85
Power Consumption
Note 2
PD
7.5 25
Notes:
2. Drivers open (unloaded). The majority of power is used in the load connected to the drivers.
3. The ’-CP’ and ’-CS’ parts are specified to operate over 0 to 70 °C but are tested at 25 °C only.
The ’-IP’ and ’-IS’ parts are tested over the full -40 to 85 °C temperature range.
Units
V
mA
°C
°C
mW
DIGITAL CHARACTERISTICS
(TA = 25 °C for suffixes ’CP’ & ’CS’, TA = -40 to 85 °C for ’IP’ & ’IS’; VD+ = 5V ± 10%)
Parameter
Symbol
Min
Typ
Max Units
High-Level Input Voltage
Low-Level Input Voltage
High-Level Output Voltage
Low-Level Output Voltage
Input Leakage Current
Master Clock Frequency:
(IO = 200µA)
(IO = 3.2mA)
CS8401A
CS8402A
Note 4
Note 4
VIH
VIL
VOH
VOL
Iin
MCK
2.0
-0.3
VDD-1.0
VDD+0.3
+0.8
V
V
V
0.4 V
1.0 10 µA
22 MHz
7.1 MHz
Master Clock Duty Cycle
CS8401/2A
40 60 %
Notes: 4. MCK for the CS8401 must be 128, 192, 256, or 384× the input word rate based on M0 and M1 in control
register 2. MCK for the CS8402A must be 128× the input word rate, except in Transparent Mode where MCK is
256x the input word rate.
Specifications are subject to change without notice.
2 DS60F1









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CS8401A Даташит, Описание, Даташиты
CS8401A CS8402A
DIGITAL CHARACTERISTICS - RS422 DRIVERS
(TXP, TXN pins only; VD+ = 5V ±10%)
Parameter
Symbol
Output High Voltage
IOH = -30 mA
VOH
Output Low Voltage
IOL = 30 mA
VOL
Min Typ
VD+- 0.7 VD+ - 0.4
0.4
Max
0.7
Units
V
V
SWITCHING CHARACTERISTICS - CS8401A PARALLEL PORT
(TA = 25 °C for suffixes ’-CP’ and ’-CS’; TA = -40 to 85 °C for suffixes ’-IP’ and ’-IS’)
Parameter
Symbol
Min
Typ
ADDRESS valid to CS low
tadcss
13.5
CS high to ADDRESS invalid
tcsadh
0
RD/WR valid to CS low
trwcss
10
CS low to RD/WR invalid
tcsrwi
35
CS low
tcsl 35
DATA valid to CS rising
RD/WR low (writing)
tdcssw
32
CS high to DATA invalid
RD/WR low (writing)
tcsdhw
0
CS falling to DATA valid
RD/WR high (reading)
tcsddr
CS rising to DATA Hi-Z
RD/WR high (reading)
tcsdhr
5
Max
35
A4 - A0
CS
RD/WR
Writing
D7 - D0
t adcss
t rwcss
t csl
t csrwi
t dcssw
t csadh
t csdhw
Units
ns
ns
ns
ns
ns
ns
ns
ns
ns
RD/WR
Reading
D7 - D0
DS60F1
t csddr
CS8401A Parallel Port Timing
t csdhr
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