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TMP92CZ26A
92CZ26A-342
(5) Notes
1. Baud rate for IrDA
When IrDA is operated, set 01 to SC0MOD0<SC1:0> to generate
baud-rate.
The setting except above (TA0TRG, f
IO
and SCLK0-input) cannot be used.
2. The pulse width for transmission
The IrDA 1.0 specification is defined in
Table 3.14.3.
Table 3.14.3 Baud rate and pulse width specifications
Baud Rate Modulation
Rate Tolerance
(% of rate)
Pulse Width
(minimum)
Pulse Width
(typical)
Pulse width
(maximum)
2.4 kbps RZI ±0.87 1.41 μs 78.13 μs 88.55 μs
9.6 kbps RZI ±0.87 1.41 μs 19.53 μs 22.13 μs
19.2 kbps RZI ±0.87 1.41 μs 9.77 μs 11.07 μs
38.4 kbps RZI ±0.87 1.41 μs 4.88 μs 5.96 μs
57.6 kbps RZI ±0.87 1.41 μs 3.26 μs 4.34 μs
115.2 kbps RZI ±0.87 1.41 μs 1.63 μs 2.23 μs
The infra-red pulse width is specified either baud rate T× 3/16 or 1.6 μs (1.6 μs is equal to
3/16 pulse width when baud rate is 115.2 kbps).
The TMP92CZ26A has the function selects the pulse width of Transmission either 3/16 or
1/16. But 1/16 pulse width can be selected when the baud rate is equal or less than 38.4
kbps.
As the same reason, + (16 − k)/16 division function in the baud rate generator of SIO0 can
not be used to generate 115.2 kbps baud rate.
Also when the 38.4 kbps and 1/16 pulse width, + (16-K)/16 division function can not be used.
Table 3.14.4 Baud rate and pulse width for (16 – K) / 16 division function
Baud Rate
Pulse Width
115.2 Kbps 57.6 Kbps 38.4 Kbps 19.2 Kbps 9.6 Kbps 2.4 Kbps
T × 3/16 × (Note)
○ ○ ○ ○ ○
T × 1/16
− − ×
○ ○ ○
○: Can be used (16 − K)/16 division function
×: Cannot be used (16 − K)/16 division function
−: Cannot be set to 1/16 pulse width
Note: Can be used (16 − K)/16 division function at a special condition.