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W681512 Datasheet, PDF (17/38 Pages) Winbond – SINGLE-CHANNEL VOICEBAND CODEC
W681512
TFS
FST
TFSRH
TFSFH
TFSRS
TBCKH
TBCKL
BCLKT -1 0 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18
PCMT
TBDTD
TBDTD
THID
D7 D6 D5 D4 D3 D2 D1 D0
TBDTD
TBDTTDBCK
THID
D7 D6 D5 D4 D3 D2 D1 D0
PCMR
MSB
TDRS
TDRH
LSB
D7 D6 D5 D4 D3 D2 D1 D0
MSB
TDRS
TDRH
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 DESCRIPTION
MIN
1/TFS
1/TBCK
TBCKH
TBCKL
TFSRH
FST Frequency
---
BCLKT Frequency
256
BCLKT HIGH Pulse Width
50
BCLKT LOW Pulse Width
50
BCLKT –1 Falling Edge to FST Rising Edge
20
Hold Time
TFSRS
FST Rising Edge to BCLKT 0 Falling edge
60
Setup Time
TFSFH
BCLKT 0 Falling Edge to FST Falling Edge
20
Hold Time
TBDTD
BCLKT Rising Edge to Valid PCMT Delay
10
Time
THID
Delay Time from the BCLKT 8 Falling Edge
10
(B1 channel) or BCLKT 18 Falling Edge (B2
Channel) to PCMT Output High Impedance
TDRS
Valid PCMR to BCLKT Falling Edge Setup
20
Time
TDRH
PCMR Hold Time from BCLKT Falling Edge
75
Table 8.3 IDL PCM Timing Parameters
TYP
8
---
---
---
---
---
---
---
---
---
---
MAX
---
4096
---
---
---
UNIT
kHz
kHz
ns
ns
ns
--- ns
--- ns
60 ns
50 ns
--- ns
--- ns
- 17 -
Publication Release Date: April, 2007
Revision C14