UPD9903 Datasheet, PDF (13/28 Pages) NEC – UPD9903 ANALOG SUBSCRIBER LINE LSI DIGITAL CODEC

µPD9903
Timing charts
(1) PCM data transmission timing (HWX pin)
(a) DCLK is later than FS
tR
FS
tWHS
tF
tCSD2
tCY
tR
tDCLK
tF
DCLK
1
2
8
Hi-Z
tDZX2
tDCLK
tDDX
tHZX
HWX
(PCM data)
MSB
2nd
7th
LSB
Hi-Z
TYPE
tDZX2
Hi-Level
tHZX
Hi-Z
(b) FS is later than DCLK
FS
tCSD1
tWHSC
DCLK
1
2
8
tDZX1
Hi-Z
HWX
(PCM data)
TYPE
Hi-Z
tDZX1
MSB
2nd
Hi-Level
7th
LSB
Hi-Z
13