w681512 Winbond Electronics Corp America, w681512 Datasheet - Page 17

• Manufacturer Part Number: w681512
• Description: Single-channel Voiceband Codec
• Manufacturer: Winbond Electronics Corp America

SYMBOL
1/T
1/T
T
T
T
T
T
T
T
T
T
BCKH
BCKL
FSRH
FSRS
FSFH
BDTD
HID
DRS
DRH
FS
BCK
BCLKT
PCMR
PCMT
FST
DESCRIPTION
FST Frequency
BCLKT Frequency
BCLKT HIGH Pulse Width
BCLKT LOW Pulse Width
BCLKT –1 Falling Edge to FST Rising Edge
Hold Time
FST Rising Edge to BCLKT 0 Falling edge
Setup Time
BCLKT 0 Falling Edge to FST Falling Edge
Hold Time
BCLKT Rising Edge to Valid PCMT Delay
Time
Delay Time from the BCLKT 8 Falling Edge
(B1 channel) or BCLKT 18 Falling Edge (B2
Channel) to PCMT Output High Impedance
Valid PCMR to BCLKT Falling Edge Setup
Time
PCMR Hold Time from BCLKT Falling Edge
T
FSRH
-1
0
T
FSRS
T
FSFH
1
MSB
MSB
D7 D6 D5 D4 D3 D2 D1 D0
D7 D6 D5 D4 D3 D2 D1 D0
T
BDTD
2
T
DRS
3
B1 Channel
BCH = 0
4
T
DRH
Table 8.3 IDL PCM Timing Parameters
5
T
BDTD
6
7
Figure 8.3 IDL PCM Timing
8
LSB
LSB
T
9
HID
10
T
- 17 -
FS
11 12
MSB
MSB
T
D7 D6 D5 D4 D3 D2
D7 D6 D5 D4 D3 D2
BDTD
T
DRS
13
B2 Channel
14
T
BCH = 1
DRH
T
MIN
256
15 16
BCKH
50
50
20
60
20
10
10
20
75
---
T
BDTD
T
BCK
Publication Release Date: April, 2007
17
T
BCKL
D1 D0
D1 D0
18
LSB
LSB
TYP
T
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HID
8
MAX
4096
W681512
60
50
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Revision C14
UNIT
kHz
kHz
ns
ns
ns
ns
ns
ns
ns
ns
ns