r4f2426 Renesas Electronics Corporation., r4f2426 Datasheet - Page 938

• Manufacturer Part Number: r4f2426
• Description: 16-bit Single-chip Microcomputer H8s Family / H8s/2400 Series
• Manufacturer: Renesas Electronics Corporation.

Section 15 Serial Communication Interface (SCI, IrDA)
(2)
In reception, IR frame data is converted to a UART frame by the IrDA interface, and input to the
SCI.
When a high pulse is detected, 0 data is output, and if there is no pulse during a one-bit interval, 1
data is output. Note that a pulse shorter than the minimum pulse width of 1.41 µs will be identified
as a 0 signal.
(3)
Table 15.12 shows possible settings for bits IrCKS2 to IrCKS0 (minimum pulse width), and
operating frequencies of this LSI and bit rates, for making the pulse width shorter than 3/16 times
the bit rate in transmission.
Table 15.12 Settings of IrCKS2 to IrCKS0 Bits
Legend:
: A bit rate setting cannot be made on the SCI side.
Rev. 1.00 Sep. 19, 2008 Page 910 of 1270
REJ09B0466-0100
Operating
Frequency
φ (MHz)
8
9.8304
10
12
12.288
14
14.7456
16
16.9344
17.2032
18
19.6608
20
25
30
33
Reception
High Pulse Width Selection
2400
78.13
100
100
100
101
101
101
101
101
101
101
101
101
101
110
110
110
Bit Rate (bps) (Above)/Bit Period × 3/16 (µs) (Below)
9600
19.53
100
100
100
101
101
101
101
101
101
101
101
101
101
110
110
110
19200
9.77
100
100
100
101
101
101
101
101
101
101
101
101
101
110
110
110
38400
4.88
100
100
100
101
101
101
101
101
101
101
101
101
101
110
110
110
57600
3.26
100
100
100
101
101
101
101
101
101
101
101
101
101
110
110
110
115200
1.63
100
100
100
101
101
101
101
101
101
101
101
101
101


