ML7041 Просмотр технического описания (PDF) - Oki Electric Industry
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ML7041 Datasheet PDF : 28 Pages
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OKI Semiconductor
FEDL7041-04
ML7041
FUNCTIONAL DESCRIPTION
Control Registers
CR0 (Basic operating mode 1)
Note: The initial value means a value set when the device is reset by the PDN pin.
CR0
Initial value
B7
B6
B5
B4
B3
B2
B1
B0
A/µ SPOUT PDN
SEL
PON
ALL
PDN
TX
PDN
RX
SLP
SLP
SEL
LNR
0
0
0
0
0
0
0
0
B7....... PCM interface companding law select 0: µ-law 1: A-law
B6....... Power-on control for output amplifies (SPO+, SPO−) 0: Power down 1: Power on
B5....... Power down (entire circuitry)
0: Power on 1: Power down
ORed with the inverted PDN signal. When using this data, set PDN to “L”.
The control registers are not reset by this signal.
B4....... Power down (transmit only)
0: Power on 1: Power down
B3....... Power down (receive only)
0: Power on 1: Power down
B2....... Slope filter enable
0: Slope filter disable 1: Slope filter enable
B1....... Slope filter frequency response select 0: CASE1 1: CASE2
Either CASE1 or CASE2 can be selected in Figure 8.
B0....... PCM interface linear code select
0: PCM companding law selected by CR0-B7
1: 14-bit linear code (2’s complement)
6
4
2
0
–2
–4
–6
–8
–10
–12
–14
0
CASE1
CASE2
500
1000 1500 2000 2500 3000
Frequency [Hz]
Figure 8 Slope Filter Frequency Characteristics
3500
4000
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