W681512
TFS
FST
BCLKT
PCMT
TFSFH
TFSRS
TBCKH
TBCKL
TFSRH
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
THID
TFDTD
D7
TBDTD
D4 D3 D2 D1 D0 D7 D6 D5 D4 D3 D2
MSB
THID
TBDTD
TBDTD
TBCK
D6 D5
D1 D0
LSB
MSB
LSB
TDRS
TDRH
TDRS
TDRH
D7
D6 D5
PCMR
D4 D3 D2 D1 D0 D7 D6 D5 D4 D3 D2
MSB
D1 D0
MSB
LSB
LSB
BCH = 0
BCH = 1
B1 Channel
B2 Channel
Figure 8.4 GCI PCM Timing
SYMBOL
1/TFST
1/TBCK
TBCKH
TBCKL
DESCRIPTION
MIN
---
TYP
8
MAX UNIT
FST Frequency
---
kHz
BCLKT Frequency
BCLKT HIGH Pulse Width
BCLKT LOW Pulse Width
512
50
50
20
60
20
---
---
---
---
---
---
---
---
---
---
6176 kHz
---
---
---
---
---
60
60
50
ns
ns
ns
ns
ns
ns
ns
ns
TFSRH
TFSRS
TFSFH
BCLKT 0 Falling Edge to FST Rising Edge Hold Time
FST Rising Edge to BCLKT 1 Falling edge Setup Time
BCLKT 1 Falling Edge to FST Falling Edge Hold Time
FST Rising Edge to Valid PCMT Delay Time
TFDTD
TBDTD
THID
BCLKT Rising Edge to Valid PCMT Delay Time
---
Delay Time from the BCLKT 16 Falling Edge (B1
channel) or BCLKT 32 Falling Edge (B2 Channel) to
PCMT Output High Impedance
10
TDRS
TDRH
Valid PCMR to BCLKT Rising Edge Setup Time
PCMR Hold Time from BCLKT Rising Edge
Table 8.4 GCI PCM Timing Parameters
20
---
---
---
---
ns
ns
60
- 18 -
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