Read Sharp SM-SX1 (serv.man2) Service Manual online
SM-SX1H
– 39 –
1, 2
DI
Input with pull-up resistor
Input data
3, 4
BCKI
Input with pull-up resistor
Bit clock on the input side
5
LRCI
Input with pull-up resistor
Word clock on the input side
6
ICLK
Input
System clock input on the input side
7
ICKSL
Input with pull-up resistor
System clock on the input side (ICLK) selection. H:384fsi, L: 256fsi
Input format setting at IFM1 and IFM2
8*, 9*
IFM1
Input with pull-up resistor
10, 11
IFM2
Input with pull-up resistor
12, 13
VDD
—
Power supply terminal (5V)
14, 15
DMUTE
Input with pull-up resistor
(Direct) mute
16
MCOM
Input with pull-up resistor
Function switch of 17 to 20 pins
17
MDT/FSI1
Input with pull-up resistor
In case of MCOM=H, Microcomputer data input: MDT
In case of MCOM=L, De-emphasis frequency setting: FSI1
In case of MCOM=L, De-emphasis frequency setting: FSI1
In case of MCOM=H, Bit-clock for microcomputer data input: MCK
In case of MCOM=L, De-emphasis frequency setting :FSI2
In case of MCOM=L, De-emphasis frequency setting :FSI2
Input sample frequency setting (for de-emphasis)
18
MCK/FSI2
Input with pull-up resistor
19, 20
MLEN/DEEM
Input with pull-up resistor
In case of MCOM=H, Microcomputer data word latch clock: MLEN
In case of MCOM=L, De-emphasis ON/OFF control: DEEM
In case of MCOM=L, De-emphasis ON/OFF control: DEEM
Output format setting with OW18N, OW20N
Time of IISN=H (normal mode)
21, 22
OW18N
Input with pull-up resistor
Time of IISN=L (IIS mode)
23, 24
OW20N
Input with pull-up resistor
25, 26
IISN
Input with pull-up resistor
IIS output mode selection. H: Normal mode, L: IIS mode
27*
STATE
Output
Output to express the internal operational state (for operation check)
28*
TST1N
Input with pull-up resistor
Control of output dither. H: Dither OFF, L: Dither ON
29*
TST2N
Input with pull-up resistor
Test terminal. Set at H.
30, 31
RSTN
Input with pull-up resistor
Reset terminal
32, 33
VSS
—
GND terminal (0V)
IC801 VHiSM5844AF-1: Sampling Rate Converter (SM5844AF) (1/2)
Pin No.
Port Name
Input/Output
In this unit, the terminal with asterisk mark (*) is (open) terminal which is not connected to the outside.
• Outline
SM5844AF is a special LSI for sampling rate converter, having a function to asynchronously covert the sample rate of the digital
audio signal. The input/output interface correspond to the input data of 16/20-bit word length and the output data of 16/18/20-bit
word length. Moreover, it integrates the digital de-emphasis filter, digital attenuator and other functions.
The package is a 44-pin QFP type, and the LSI is excellent in the cost performance.
SM5844AF is a special LSI for sampling rate converter, having a function to asynchronously covert the sample rate of the digital
audio signal. The input/output interface correspond to the input data of 16/20-bit word length and the output data of 16/18/20-bit
word length. Moreover, it integrates the digital de-emphasis filter, digital attenuator and other functions.
The package is a 44-pin QFP type, and the LSI is excellent in the cost performance.
Function
fsi
FSI1
FSI2
32.0 kHz
H
H
44.1 kHz
X
L
48.0 kHz
L
H
IFM1
Terminal
IFM2
Terminal
Word
Length
Data Sequence
Data Position
L
L
16 Bit
Backward packing
L
H
MSB first
H
L
20 Bit
Forward packing
H
H
LSB first
Backward packing
Output Format
OW20N
OW18N
16 Bit
H
H
18 Bit
Backward packing
H
L
20 Bit
L
H
Forward packing
L
L
Output Format
OW20N
OW18N
16 Bit
H
H
18 Bit
IIS Mode
H
L
20 Bit
Forward packing
L
H
L
L
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