UPD61052 NEC, UPD61052 Datasheet - Page 77

• Manufacturer Part Number: UPD61052
• Description: MPEG2 Audio / Video Encoder
• Manufacturer: NEC

(6) Stream input interface
(a) Parallel stream input
Valid mode
Remark ISREQ is effective only when it works by the master mode. ISREQ becomes invalid asynchronously to
ISCLK cycle
ISCLK low-level width
ISCLK high-level width
ISREQ output hold time
ISVLD setup time
ISVLD hold time
ISSYNC setup time
ISSYNC hold time
IS7 to IS0 setup time
IS7 to IS0 hold time
Data cycle time
Remark ISSYNC is active high, SREQ is active high and ISCLK is active high edge.
IS7 to IS0 (I)
Parameter
ISSYNC (I)
ISREQ (O)
ISCLK. ISREQ output delay time doesn't prescribe to ISCLK.
ISCLK (I)
ISVLD (I)
received
data
No
t
t
t
t
t
t
t
t
t
t
t
Symbol
ISCcyc
ISCLW
ISCHW
ISRQHO
ISVS
ISVH
ISSS
ISSH
ISDS
ISDH
DCYC
1st of packet
Valid data
t
ISSS
t
ISVH
Vs active edge of ISCLK
Vs active edge of ISCLK
Vs active edge of ISCLK
Vs active edge of ISCLK
Vs active edge of ISCLK
Vs active edge of ISCLK
Vs active edge of ISCLK
t
t
ISVS
t
ISCLW
ISSH
Valid data
Data Sheet S15082EJ4V0DS
Conditions
Valid
data
t
ISCHW
t
DCYC
Valid
data
Valid
data
Min.
80
37
37
80
0
7
3
7
3
7
3
t
Valid
data
ISDH
t
t
ISDS
ISCYC
Typ.
Valid data
µ
PD61051, 61052
Max.
t
ISRQHO
Valid data
Unit
ns
ns
ns
ns
ns
ns
ns
ns
ns
ns
ns
77