Toshiba H1 Series Data Book page 345

(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
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
2.4 kbps RZI
9.6 kbps RZI
19.2 kbps RZI
38.4 kbps RZI
57.6 kbps RZI
115.2 kbps RZI
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
Pulse Width
115.2 Kbps 57.6 Kbps
T × 3/16 × (Note)
T × 1/16 −
Note: Can be used (16 − K)/16 division function at a special condition.
Rate Tolerance Pulse Width
(% of rate) (minimum)
±0.87 1.41 μs
±0.87 1.41 μs
±0.87 1.41 μs
±0.87 1.41 μs
±0.87 1.41 μs
±0.87 1.41 μs
Baud Rate
38.4 Kbps 19.2 Kbps
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− ×
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: Can be used (16 − K)/16 division function
×: Cannot be used (16 − K)/16 division function
−: Cannot be set to 1/16 pulse width
92CZ26A-342
and SCLK0-input) cannot be used.
IO
Pulse Width Pulse width
(typical) (maximum)
78.13 μs 88.55 μs
19.53 μs 22.13 μs
9.77 μs 11.07 μs
4.88 μs 5.96 μs
3.26 μs 4.34 μs
1.63 μs 2.23 μs
9.6 Kbps 2.4 Kbps
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TMP92CZ26A
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