参数资料
型号: TLV320AIC11IPFBG4
厂商: TEXAS INSTRUMENTS INC
元件分类: 消费家电
英文描述: SPECIALTY CONSUMER CIRCUIT, PQFP48
封装: GREEN, PLASTIC, TQFP-48
文件页数: 3/55页
文件大小: 270K
代理商: TLV320AIC11IPFBG4
1–5
1.5
Terminal Functions (Continued)
TERMINAL
I/O
DESCRIPTION
NAME
NO.
I/O
DESCRIPTION
DOUT
16
O
Data output. DOUT transmits the ADC output bits and registers data, and is synchronized to SCLK and FS.
Data is sent out at the rising edge of SCLK when FS is low. DOUT is at high impedance when FS is not
activated.
DTXIM
7
I
Transmitter-path amplifier A3 analog inverting input. It can also be used for general-purpose amplification.
DTXIP
6
I
Transmitter-path amplifier A4 analog noninverting input. Can also be used for general-purpose
amplification.
DTXOM
5
O
Transmitter path amplifier A4 feedback for negative output. It can also be used for general-purpose
amplification.
DTXOP
4
O
Transmitter-path amplifier A3 feedback for positive output. It can also be used for general-purpose
amplification.
DVDD1
15
I
Dedicated 1.1-V to 3.6-V digital power supply for low-voltage I/O
DVDD2
30
I
Dedicated 3-V to 5.5-V digital power supply for core CODEC
DVSS
14, 29
I
Digital ground
FC
24
I
Hardware request for secondary communication
FILT
38
O
Bandgap filter. FILT is provided for decoupling of the bandgap reference, and provides 2.5 V. The optimal
capacitor value is 0.1
F (ceramic). This voltage node should be loaded only with a high-impedance dc load.
FLAG
23
O
Controlled by bit D4 of control register 3. If D4=0 (default), the FLAG pin outputs the communication flag that
goes low/high to indicate primary-communication/secondary-communication interval, respectively. If D4=1,
the FLAG pin outputs the value of D3.
FS
22
I/O
Frame sync. When FS goes low, DIN begins receiving data bits and DOUT begins transmitting data bits. In
master mode, FS is internally generated and is low during data transmission to DIN and from DOUT. In slave
mode, FS is externally generated.
FSD
21
O
Frame-sync delayed output. The FSD output synchronizes a slave device to the frame sync of the master
device. FSD is applied to the slave FS input and has the same duration as the master FS signal. Requires a
pullup resistor if not used.
INM
48
I
Inverting input to analog modulator. INM requires an external R-C antialias filter with low output impedance if
the internal antialias filter is bypassed.
INP
47
I
Noninverting input to analog modulator. INP requires an external R-C antialias filter with low output
impedance if the internal antialias filter is bypassed.
M0
10
I
Combine with M1 to select serial interface mode (frame-sync mode)
M1
11
I
Combine with M0 to select serial interface mode (frame-sync mode)
MCLK
20
I
Master clock. MCLK derives the internal clocks of the sigma-delta analog interface circuit.
M/S
27
I
Master/slave select input. When M/S is high, the device is the master, and when M/S is low, it is a slave.
NC
18, 28, 31,
32, 35, 36,
37, 39, 41,
44
No connection
OUTM
9
O
DAC’s inverting output. OUTM is functionally identical with and complementary to OUTP.
OUTP
8
O
DAC’s noninverting output. OUTP can also be used alone for single-ended operation.
PWRDWN
12
I
Power down. When PWRDWN is pulled low, the device goes into a power-down mode, the serial interface is
disabled, and most of the high-speed clocks are disabled. However, all register values are sustained and the
device resumes full-power operation without reinitialization when PWRDWN is pulled high again.
PWRDWN resets the counters only and preserves the programmed register contents. See paragraph 2.2.2
for more information.
RESET
13
I
Reset. The reset function is provided to initialize all the internal registers to their default values. The serial
port can be configured to the default state accordingly. See Appendix A, Register Set, and Subsection 2.2.1,
Reset and Power-Down Functions for detailed descriptions.
SCLK
19
I/O
Shift clock. SCLK signal clocks serial data into DIN and out of DOUT during the frame-sync interval. When
configured as an output (M/S high), SCLK is generated internally by multiplying the frame-sync signal
frequency by 256 (cascade devices < 5) or 512 (cascade devices > 4). When configured as an input (M/S
low), SCLK is generated externally and must be synchronous with the master clock and frame sync.
VMID
43
O
Reference voltage output at AVDD/2
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