IBM39STB032xx
IBM39STB034xx
STB032xx and STB034xx Digital Set-Top Box Integrated Controllers
Preliminary
Byte Mode Handshake
HostBusy
(PPU_nAutoFd)
HostClk
(PPU_nStrobe)
PtrClk
(PPU_nAck)
nDataAvail
Ptr to Host Data not available
Ptr to Host Data available
(PPU_nError)
PData
TP TH
TL
TP
TP
T
TP
TP TH
TL
TL
TH
TL
Note: See the table, “IEEE 1284 Mode Handshake Timing Values,” on page 45 for symbol values.
ECP Forward Mode Handshake
HostClk
(nStrobe)
PeriphAck
(Busy)
PData
Byte 0
nCmd
Byte 1
nCmd
HostAck
(nAutoFd)
TD
TR
TH
TD
T
TL
T
Note: See the table, “IEEE 1284 Mode Handshake Timing Values,” on page 45 for symbol values.
Electrical Information
Page 46 of 55
STB03_sds_041800.fm.01
April 18, 2000
IBM [ IBM ]
