CS8401A-IP ETC [List of Unclassifed Manufacturers], CS8401A-IP Datasheet - Page 4

• Manufacturer Part Number: CS8401A-IP
• Description: Digital Audio Interface Transmitter
• Manufacturer: ETC [List of Unclassifed Manufacturers]

SWITCHING CHARACTERISTICS - SERIAL PORTS
(T
Inputs: Logic 0 = GND, logic 1 = VD+; C
Notes:
4
SCK Frequency
SCK Pulse Width Low
SCK Pulse Width High
SCK rising to FSYNC edge delay
SCK rising to FSYNC edge setup
SDATA valid to SCK rising setup
SCK rising to SDATA hold time
C, U, V valid to SCK rising setup CS8402A
SCK rising to C, U, V hold time
U valid to SBC rising setup
SBC rising to U hold time
RST Pulse Width
A
= 25 C for suffixes ’-CP’ and ’-CS’; T
5. The input word rate, IWR, refers to the frequency at which stereo audio input samples are input to
6. Master mode is defined as SCK and FSYNC being outputs. In Slave mode they are inputs. In the
7. The table above assumes data is output on the falling edge and latched on the rising edge. In both
8. The diagrams show SBC rising coincident with the first rising edge of SCK after FSYNC transitions.
the part. (A stereo pair is two audio samples.) Therefore, in Master mode, there are always
32 SCK periods in one audio sample.
CS8401A, control reg. 3 bit 1, MSTR, selects master. In the CS8402A, only format 0 is master.
parts the edge is selectable. The table is defined for the CS8401A with control reg. 3 bit 0, SCED, set to
one, and for the CS8402A in formats 4 through 7. For the other formats, the table and figure edges
must be reversed (ie. "rising" to "falling" and vice versa).
This is true for all modes except FSF0 & 1 both equal 1 in the CS8401A, and format 4 in the CS8402A.
In these modes SBC is delayed one full SCK period.
Parameter
FSYNC
SDATA
SCK
Master Mode
Slave Mode
Slave Mode
Slave Mode
non-CD Mode
CS8402A
non-CD mode
CS8402A, CD mode
CS8402A, CD mode
CS8402A
t
Serial Input Timing - Slave Mode
L
sfds
A
= 20 pF)
= -40 to 85 C for suffixes ’-IP’ and ’-IS’;
t
sss
Notes 7, 8
Notes, 7,8
Notes 5,6
Notes 6,7
Notes 6,7
Note 6
Note 6
Note 6
Note 7
Note 8
Note 8
Note 7
t
sfs
Symbol
t
t
t sckh
ssh
t sckf
t sckl
t sfds
t suh
t sss
t ssh
t css
t scs
t uss
sckl
t sfs
t
sckh
Min
150
25
25
20
20
20
20
50
80
0
0
CS8401A CS8402A
IWR 64
Typ
12.5
Max
DS60F1
Units
MHz
Hz
ns
ns
ns
ns
ns
ns
ns
ns
ns
ns
ns