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CS4298 датащи(PDF) 34 Page - Cirrus Logic

номер детали CS4298
подробное описание детали  SoundFusion Audio/Modem Codec 97 (AMC 97)
PDF  52 Pages
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производитель  CIRRUS [Cirrus Logic]
домашняя страница  http://www.cirrus.com
Logo CIRRUS - Cirrus Logic

CS4298 датащи(HTML) 34 Page - Cirrus Logic

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CS4298
34
DS315PP2
6.1.32
GPIO Pin Wakeup Mask (Index 4Ch)
GS[9:0]
Wake up mask. If set, allow the GPIO input to generate AC-LINK wake up protocol.
Default
0000h
The CS4298 has the ability to generate a “wake up” cycle by a transition of a GPIO pin when the
AC-Link has been powered down. If a mask bit is set, a one being set in the corresponding GPIO Pin
Status (Index 54h) will initiate a wake up interrupt. Bit 0 of SDATA_IN Slot 12 will be set indicating
a GPIO interrupt. GPIO pins must be defined as “input”, “sticky”, and the mask set to allow a GPIO
interrupt. The GPIO interrupt is cleared by writing a 0 to the respective status bit in GPIO Pin Status
(Index 54h) register.
6.1.33 GPIO Pin Status (Index 54h)
GI[9:0]
GPIO pin status. Reflects the state of all GPIO pins either input or output. If the GPIO pin is defined as
an output, the respective bit reflects the state of SDATA_OUT Slot 12. If the GPIO pin is defined as an
input, the register is reflected in SDATA_IN Slot 12. GPIO output pins cannot be accessed by Slot 1,2
register access, only by SDATA_OUT Slot 12.
6.1.34 Misc. Modem AFE Status (Index 56h)
HSB[2:0]
Handset Loopback.
L2B[2:0]
Line 2 Loopback.
L1B[2:0]
Line 1 Loopback.
Default
0000h.
D15
D14
D13
D12
D11
D10
D9
D8
D7
D6
D5
D4
D3
D2
D1
D0
GW9
GW8
GW7
GW6
GW5
GW4
GW3
GW2
GW1
GW0
D15
D14
D13
D12
D11
D10
D9
D8
D7
D6
D5
D4
D3
D2
D1
D0
GI9
GI8
GI7
GI6
GI5
GI4
GI3
GI2
GI1
GI0
Mode
D15
D14
D13
D12
D11
D10
D9
D8
D7
D6
D5
D4
D3
D2
D1
D0
0
HSB2
HSB1
HSB0
L1B2
L1B1
L1B0
1
L2B2
L2B1
L2B0
L1B2
L1B1
L1B0
2
L1B2
L1B1
L1B0
3
Loop Back Mode
HSB[2:0], L2B[2:0], L1B[2:0]
Function
000
Disabled
001
Digital Loop Back
010
Local Analog Loop Back
011
DAC to ADC 1-Bit data Loop Back
100
Remote Analog Loop Back
101
AC-Link Loop Back
110-111
Not Used
Table 8. Misc. Modem Configuration



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