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TAS1020APFB bảng dữ liệu(PDF) 13 Page - Texas Instruments

tên linh kiện TAS1020APFB
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TAS1020APFB bảng dữ liệu(HTML) 13 Page - Texas Instruments

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1.7
Terminal Functions—External MCU Mode (Continued)
TERMINAL
NAME
PIN
TYPE
NO.
I/O
DESCRIPTION
VREN
CMOS
42
O
General-purpose active-low output which is memory mapped.
XINT
CMOS
15
I
External interrupt: An active low input used by external circuitry to interrupt the on-chip 8052 MCU.
XTALI
CMOS
47
I
Crystal input: Input to the on-chip oscillator from an external 6-MHz crystal.
XTALO
CMOS
46
O
Crystal output: Output from the on-chip oscillator to an external 6-MHz crystal.
1.8
Device Operation Modes
The EXTEN and TEST pins define the mode that the TAS1020A is in after reset.
MODE
EXTEN
TEST
Normal mode – internal MCU
0
0
External MCU mode
1
0
Factory test
0
1
Factory test
1
1
1.9
Terminal Assignments for Codec Port Interface Modes
The codec port interface has five modes of operation that support AC97, I2S, and AIC codecs. There is also a
general-purpose mode that is not specific to a serial interface. The mode is programmed by writing to the mode select
field of the codec port interface configuration register 1 (CPTCNF1). The codec port interface terminals CSYNC,
CSCLK, CDATO, CDATI, CRESET, and CSCHNE take on functionality appropriate to the mode programmed as
shown in the following table.
TERMINAL
GP
AIC
AC ’97 v1.X
AC ’97 v2.X
I2S
I2S
NO.
NAME
GP
Mode 0
AIC
Mode 1
AC 97 v1.X
Mode 2
AC 97 v2.X
Mode 3
I2S
Mode 4
I2S
Mode 5
35
CSYNC
CSYNC
I/O
FS
O
SYNC
O
SYNC
O
LRCK
O
LRCK1
O
37
CSCLK
CSCLK
I/O
SCLK
O
BIT_CLK
I
BIT_CLK
I
SCLK
O
SCLK1
O
38
CDATO
CDATO
O
DOUT
O
SD_OUT
O
SD_OUT
O
SDOUT1
O
SDOUT1
O
36
CDATI
CDATI
I
DIN
I
SD_IN
I
SD_IN1
I
SDIN1
I
SDIN2
I
34
CRESET
CRESET
O
RESET
O
RESET
O
RESET
O
CRESET
O
SCLK2
O
32
CSCHNE
NC
O
FC
O
NC
O
SD_IN2
I
SDIN2
I
LRCK2
O
NOTES:
1. Signal names and I/O direction are with respect to the TAS1020A device. The signal names used for the TAS1020A terminals for
the various codec port interface modes reflect the nomenclature used by the codec devices.
2. NC indicates no connection for the terminal in a particular mode. The TAS1020A device drives the signal as an output for these
cases.
3. The CSYNC and CSCLK signals can be programmed as either an input or an output in the general-purpose mode.



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