W681511 Datasheet, PDF (17/34 Pages) Winbond – SINGLE-CHANNEL VOICEBAND CODEC

W681511
T
FS
FST
T _{FSR H}
T _{FSF H}
T _{FSR S}
T_{BCK H}
T_{BCK L}
B C L K T -1 0 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18
PCM T
T_BDTD
T_BDTD
T _{H ID}
D7 D6 D5 D4 D3 D2 D1 D0
T_BDTD
T
B
D
T_B
TD
C
K
T _{H ID}
D7 D6 D5 D4 D3 D2 D1 D0
PCM R
M SB
T_DRS
T_DRH
L SB
D7 D6 D5 D4 D3 D2 D1 D0
M SB
L SB
M SB
T_DRS
T_DRH
L SB
D7 D6 D5 D4 D3 D2 D1 D0
M SB
L SB
BCH =0
B 1 C hannel
BCH =1
B 2 C hannel
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
256
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
---
4096
---
---
---
UNIT
kHz
kHz
ns
ns
ns
---
ns
---
ns
60
ns
50
ns
---
ns
---
ns
- 17 -
Publication Release Date: December 4, 2002
Revision A9