參數(shù)資料
型號: TWL1102PBSR
廠商: TEXAS INSTRUMENTS INC
元件分類: 消費(fèi)家電
英文描述: SPECIALTY CONSUMER CIRCUIT, PQFP32
封裝: PLASTIC, TQFP-32
文件頁數(shù): 6/29頁
文件大?。?/td> 387K
代理商: TWL1102PBSR
TWL1102
VOICE-BAND AUDIO PROCESSOR (VBAP
)
SLVS264 – NOVEMBER 1999
14
POST OFFICE BOX 655303
DALLAS, TEXAS 75265
switching characteristics (continued)
receive timing requirements (see Figure 7)
PARAMETER
MIN
MAX
UNIT
tsu(PCSYN)
Setup time, PCMSYN high before falling edge of PCMCLK
20
tc(PCMCLK)–20
ns
th(PCSYN)
Hold time, PCMSYN high after falling edge of PCMCLK
20
tc(PCMCLK)–20
ns
tsu(PCMI)
Setup time, PCMI high or low before falling edge of PCMCLK
20
ns
th(PCMI)
Hold time, PCMI high or low after falling edge of PCMCLK
20
ns
propagation delay times, CLmax = 10 pF (see Figure 6)
PARAMETER
MIN
MAX
UNIT
tpd1
From PCMCLK bit 1 high to PCMO bit 1 valid
35
ns
tpd2
From PCMCLK high to PCMO valid, bits 2 to n
35
ns
tpd3
From PCMCLK bit n low to PCMO bit n Hi-Z
30
ns
I2C bus timing requirements (see Figure 8)
PARAMETER
MIN
MAX
UNIT
SCL
Clock frequency
400
kHz
tHIGH
Clock high time
600
ns
tLOW
Clock low time
1300
ns
tR
SDA and SCL rise time
300
ns
tF
SDA and SCL fall time
300
ns
tHD:STA
Hold time (repeated) START condition. After this period the first clock pulse is generated.
600
ns
tSU:STA
Setup time for repeated START condition
600
ns
tHD:DAT
Data input hold time
0
ns
tSU:DAT
Data input setup time
100
ns
tSU:STO
STOP condition setup time
600
ns
tBUF
Bus free time
1300
ns
DTMF generator characteristics
PARAMETER
TEST CONDITIONS
MIN
TYP
MAX
UNIT
DTMF high to low tone relative amplitude
(pre-emphasis)
1.5
2
2.5
dB
Tone frequency accuracy
–1.5 %
1.5 %
Harmonic distortion
Measured from lower tone group to highest parasitic
–20
dB
MICBIAS characteristics
PARAMETER
TEST CONDITIONS
MIN
TYP
MAX
UNIT
Load impedance
5
k
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