Figure 9-43. Fast Ir Timing (Mir And Fir) Diagram; Table 9-33. Fast Ir Port Timing Parameters - AMD Geode SC1200 Data Book

32579B
9.3.12 Fast IR Port Timing
Symbol Parameter
t MIR signal pulse width
MPW
M MIR transmitter data rate
DRT
tolerance
t MIR receiver edge jitter, % of
MJT
nominal bit duration
t FIR signal pulse width
FPW
t FIR signal double pulse width
FDPW
F FIR transmitter data rate
DRT
tolerance
t FIR receiver edge jitter, % of
FJT
nominal bit duration
Note 1. t is the nominal pulse width for MIR mode. It is determined by the M_PWID field (bits [4:0]) in the MIR_PW
MWN
register at offset 01h in bank 6 of logical device 5.
422

Table 9-33. Fast IR Port Timing Parameters

Min
t
MWN
(Note 1)
60
120
90
245
215
t
MPW
MIR
t
FPW
FIR

Figure 9-43. Fast IR Timing (MIR and FIR) Diagram

Max
-25 t +25
MWN
± 0.1%
± 2.9%
130
160
255
285
± 0.01%
± 4.0%
Data
Symbol
t
FDPW
Chips
AMD Geode™ SC1200/SC1201 Processor Data Book
Electrical Specifications
Unit Comments
ns Transmitter
ns Receiver
ns Transmitter
ns Receiver
ns Transmitter
ns Receiver