W681513_05 Datasheet, PDF (17/35 Pages) Winbond – 5V SINGLE-CHANNEL VOICEBAND CODEC FOR USB APPLICATIONS

W681513
T_FS
FST
T_FSRH
T_FSFH
T_FSRS
T_BCKH
T_BCKL
BCLKT -1 0 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18
PCMT
T_BDTD
T_BDTD
T_HID
D7 D6 D5 D4 D3 D2 D1 D0
T_BDTD
T_BDT^T_DBCK
T_HID
D7 D6 D5 D4 D3 D2 D1 D0
PCMR
MSB
T_DRS
T_DRH
LSB
D7 D6 D5 D4 D3 D2 D1 D0
MSB
T_DRS
T_DRH
LSB
D7 D6 D5 D4 D3 D2 D1 D0
MSB
LSB
MSB
LSB
BCH = 0
B1 Channel
BCH = 1
B2 Channel
Figure 8.3 IDL PCM Timing
SYMBOL
1/T_FS
1/T_BCK
T_BCKH
T_BCKL
T_FSRH
T_FSRS
T_FSFH
T_BDTD
T_HID
T_DRS
T_DRH
DESCRIPTION
MIN
FST Frequency
---
BCLKT Frequency
2000
BCLKT HIGH Pulse Width
50
BCLKT LOW Pulse Width
50
BCLKT –1 Falling Edge to FST Rising Edge 20
Hold Time
FST Rising Edge to BCLKT 0 Falling edge 60
Setup Time
BCLKT 0 Falling Edge to FST Falling Edge 20
Hold Time
BCLKT Rising Edge to Valid PCMT Delay 10
Time
Delay Time from the BCLKT 8 Falling Edge 10
(B1 channel) or BCLKT 18 Falling Edge (B2
Channel) to PCMT Output High Impedance
Valid PCMR to BCLKT Falling Edge Setup 20
Time
PCMR Hold Time from BCLKT Falling Edge 75
Table 8.3 IDL PCM Timing Parameters
TYP
8
---
---
---
---
---
---
---
---
---
---
MAX
---
2000
---
---
---
UNIT
kHz
kHz
ns
ns
ns
---
ns
---
ns
60
ns
50
ns
---
ns
---
ns
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Publication Release Date: October, 2005
Revision A11