SM5844 NPC [Nippon Precision Circuits Inc], SM5844 Datasheet - Page 17

• Manufacturer Part Number: SM5844
• Description: Asynchronous Sample Rate Converter
• Manufacturer: NPC [Nippon Precision Circuits Inc]

Direct Mute (DMUTE)
Direct mute ON/OFF
Table 6. DMUTE operation
Reset mute
Table 7. RSTN mute operation
Internal operating status (STATE)
Internally, all functions are performed using 20-bit
serial data, and the conversion rate and filter type are
Table 8. Bit function
Note that when THRUN is LOW, LRCO and BCKO are not guaranteed to be synchronized to the STATE
output.
D M U T E
Output bit position
R S T N
H I G H
H I G H
L O W
L O W
1st to 18th
19th
20th
Nor mal data is output from the next output word (mute
O F F )
0 data is output from the next output word (mute ON)
0 data is output from the next output word (mute ON)
Nor mal data is output from the 3073rd output word
( m ute OFF)
(Output data cycle/input data cycle)
Ex.
1st
00.1111111111110111
01.1111111111110111
00.0111111111110111
D A 1
D A 0
Function
Function
18th
Selected filter type
D A 1
1.0 times
2.0 times (1/2 conversion rate ratio)
0.5 times (2.0 conversion rate ratio)
0
1
0
1
9
SM5844AF
automatically selected for output. Output data is in
20-bit front-packed format.
D A 0
0
0
1
1
Content
Up converter
44.1 to 48 kHz
32 to 44.1 kHz
32 to 48 kHz
NIPPON PRECISION CIRCUITS—17
Filter
M o d e
1
2
3
4