IBM39STB032xx
IBM39STB034xx
STB032xx and STB034xx Digital Set-Top Box Integrated Controllers
Preliminary
Negotiation Phase
1284 Active
(PPU_nSelectIn)
AckDataReq
(PPU_PError)
PData
Extensibility Data Byte
HostBusy
(PPU_nAutoFd)
HostClk
(PPU_nStrobe)
PtrClk
(PPU_nAck)
nDataAvail
(PPU_nError)
XFlag
(Select)
T
T
TP
TP
TL
TH
TP
TL
TP
Note: See the table, “IEEE 1284 Mode Handshake Timing Values,” on page 45 for symbol values.
IIC Timing
Sys Clk
Output
t1
t1
IIC_SDA
IIC_SCL
Output
Output
IIC Timing Values
Symbol
Parameter
Output valid time (falling edge)
Min
Max
15
Units
ns
T
1
Note: SDA and SCL outputs are open-drain.
Electrical Information
Page 48 of 55
STB03_sds_041800.fm.01
April 18, 2000
IBM [ IBM ]
