W681511 Datasheet, PDF (18/34 Pages) Winbond – SINGLE-CHANNEL VOICEBAND CODEC

W681511
T_FS
FST
T _{FSR H}
T _FSFH
T
FSRS
T_{BCK H}
T_{BCK L}
BCLKT
PCM T
0 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 32 33 34
T_FDTD
T_BDTD
T _{H ID}
T_BDTD
T_BDTD T_BCK
T _{H ID}
D7 D6 D5 D4 D3 D2 D1 D0 D7 D6 D5 D4 D3 D2 D1 D0
PCM R
M SB
T_DRS
T_DRH
L SB M SB
T_DRS
T_DRH
L SB
D7 D6 D5 D4 D3 D2 D1 D0 D7 D6 D5 D4 D3 D2 _D1 D0
M SB
L SB M SB
L SB
BCH =0
B 1 C hannel
BCH =1
B 2 C hannel
Figure 8.4 GCI PCM Timing
SYMBOL
1/T_FST
1/T_BCK
T_BCKH
T_BCKL
T_FSRH
T_FSRS
T_FSFH
T_FDTD
T_BDTD
T_HID
T_DRS
T_DRH
DESCRIPTION
MIN
FST Frequency
---
BCLKT Frequency
512
BCLKT High Pulse Width
50
BCLKT Low Pulse Width
50
BCLKT 0 Falling Edge to FST Rising Edge Hold Time 20
FST Rising Edge to BCLKT 1 Falling edge Setup Time 60
BCLKT 1 Falling Edge to FST Falling Edge Hold Time 20
FST Rising Edge to Valid PCMT Delay Time
---
BCLKT Rising Edge to Valid PCMT Delay Time
---
Delay Time from the BCLKT 16 Falling Edge (B1 10
channel) or BCLKT 32 Falling Edge (B2 Channel) to
PCMT Output High Impedance
Valid PCMR to BCLKT Rising Edge Setup Time
20
PCMR Hold Time from BCLKT Rising Edge
---
Table 8.4 GCI PCM Timing Parameters
TYP
8
---
---
---
---
---
---
---
---
---
---
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MAX
---
6176
---
---
---
---
---
60
60
50
UNIT
kHz
kHz
ns
ns
ns
ns
ns
ns
ns
ns
---
ns
60 ns
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