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422 AMD Geode™ SC1200/SC1201 Processor Data Book
Electrical Specifications
32579B
9.3.12 Fast IR Port Timing
Figure 9-43. Fast IR Timing (MIR and FIR) Diagram
Table 9-33. Fast IR Port Timing Parameters
Symbol Parameter Min Max Unit Comments
t
MPW
MIR signal pulse width t
MWN
-25
(Note 1)
t
MWN
+25 ns Transmitter
60 ns Receiver
M
DRT
MIR transmitter data rate
tolerance
± 0.1%
t
MJT
MIR receiver edge jitter, % of
nominal bit duration
± 2.9%
t
FPW
FIR signal pulse width 120 130 ns Transmitter
90 160 ns Receiver
t
FDPW
FIR signal double pulse width 245 255 ns Transmitter
215 285 ns Receiver
F
DRT
FIR transmitter data rate
tolerance
± 0.01%
t
FJT
FIR receiver edge jitter, % of
nominal bit duration
± 4.0%
Note 1. t
MWN
is the nominal pulse width for MIR mode. It is determined by the M_PWID field (bits [4:0]) in the MIR_PW
register at offset 01h in bank 6 of logical device 5.
t
FPW
Data
MIR
FIR
Symbol
t
FDPW
Chips
t
MPW