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參數(shù)資料
| 型號： | TLC32041I |
| 廠商： | Texas Instruments, Inc. |
| 英文描述： | ANALOG INTERFACE CIRCUITS |
| 中文描述： | 模擬接口電路 |
| 文件頁數(shù)： | 13/33頁 |
| 文件大?。?/td> | 453K |
| 代理商： | TLC32041I |
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TLC32040C, TLC32040I, TLC32041C, TLC32041I
ANALOG INTERFACE CIRCUITS
SLAS014E – SEPTEMBER 1987 – REVISED MAY 1995
13
POST OFFICE BOX 655303
DALLAS, TEXAS 75265
power-up sequence
To ensure proper operation of the AIC, and as a safeguard against latch-up, it is recommended that a Schottky
diode with a forward voltage less than or equal to 0.4 V be connected from V
CC–
to ANLG GND (see Figure 17).
In the absence of such a diode, power should be applied in the following sequence: ANLG GND and DGTL GND,
V
CC–
, then V
CC+
and V
DD
. Also, no input signal should be applied until after power up.
AIC responses to improper conditions
The AIC has provisions for responding to improper conditions. These improper conditions and the response of
the AIC to these conditions are presented in Table 1 below.
AIC register constraints
The following constraints are placed on the contents of the AIC registers:
1. TA register must be
≥
4 in word mode (WORD/BYTE = high).
2. TA register must be
≥
5 in byte mode (WORD/BYTE = low).
3. TA’ register can be either positive, negative, or zero.
4. RA register must be
≥
4 in word mode (WORD/BYTE = high).
5. RA register must be
≥
5 in byte mode (WORD/BYTE = low).
6. RA’ register can be either positive, negative, or zero.
7. (TA register
±
TA’ register) must be > 1.
8. (RA register
±
RA’ register) must be > 1.
9. TB register must be > 1.
Table 1. AIC Responses To Improper Conditions
IMPROPER CONDITIONS
AIC RESPONSE
TA register + TA’ register = 0 or 1
TA register – TA’ register = 0 or 1
TA register + TA’ register < 0
Reprogram TX counter A with TA register value
MODULO 64 arithmetic is used to ensure that a positive value is loaded into the TX counter A, i.e., TA
register + TA’ register + 40 hex is loaded into TX counter A.
Reprogram RX counter A with RA register value
RA register + RA’ register = 0 or 1
RA register – RA’ register = 0 or 1
RA register + RA’ register = 0 or 1
MODULO 64 arithmetic is used to ensure that a positive value is loaded into RX counter A, i.e., RA
register + RA’ register + 40 hex is loaded into RX counter A.
The AIC is shut down.
TA register = 0 or 1
RA register = 0 or 1
TA register < 4 in word mode
TA register < 5 in byte mode
RA register < 4 in word mode
RA register < 5 in byte mode
The AIC serial port no longer operates.
TB register = 0 or 1
Reprogram TB register with 24 hex
RB register = 0 or 1
Reprogram RB register with 24 hex
AIC and DSP cannot communicate
Hold last DAC output
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相關代理商/技術參數(shù) |
參數(shù)描述 |
|---|---|
| TLC32041IN | 制造商:TI 制造商全稱:Texas Instruments 功能描述:ANALOG INTERFACE CIRCUITS |
| TLC32042EFN | 制造商:Rochester Electronics LLC 功能描述: |
| TLC32044 | 制造商:TI 制造商全稱:Texas Instruments 功能描述:VOICE-BAND ANALOG INTERFACE CIRCUITS |
| TLC32044 WAF | 制造商:Rochester Electronics LLC 功能描述: |
| TLC32044_3 WAF | 制造商:Rochester Electronics LLC 功能描述: |
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