AMD SC2200 User Manual
AMD Geode™ SC2200 Processor Data Book
425
Electrical Specifications
32580B
9.3.11
Fast IR Port
Figure 9-42. Fast IR (MIR and FIR) Timing Diagram
Table 9-31. 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 toler-
ance
ance
± 0.1%
t
MJT
MIR receiver edge jitter, % of
nominal bit duration
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 toler-
ance
ance
± 0.01%
t
FJT
FIR receiver edge jitter, % of
nominal bit duration
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