HD6417320 RENESAS [Renesas Technology Corp], HD6417320 Datasheet - Page 703

• Manufacturer Part Number: HD6417320
• Description: Renesas 32-Bit RISC Microcomputer SuperHTM RISC engine Family / SH7700 Series
• Manufacturer: RENESAS [Renesas Technology Corp]

Note:
[Legend]
Setting Example as Pφ =33.1776MHz:
Bit
6 to 3
2
1, 0
Nb
17
35
53
107
215
∗
Bit Name
ICK3 to ICK0
PSEL

Recommended value of IrDA
For example, when the transfer rate in 115.2kbps, set the value (Nb+1):(Ni+1) = 2:1.
Setting (Nb+1):(Ni+1) = 2:1 (115.2 kbps) allows operation in synchronization while the
SCIF module and IrDA module perform asynchronous operation. Synchronous
operation equalizes errors in the IR frame when such bit rate errors occur. Use bit 2
(PSEL) in SCIMR as PSEL = 1 to adjust transfer and receive data.
Nb:
Ni :
B :
The baud rate value in SCIF (SCBRD7 to SCBRD0 in SCBRR)
The baud rate value in IrDA (ICK3 to ICK0 in SCIMR)
Bit rate (bits/s)
Nb+1
18
36
54
108
2196
Initial Value R/W
All 0
0
All 0
B
115.2
57.6
38.4
19.2
9.6
R/W
R/W
R
Description
Output Pulse Division Ratio 3 to 0∗
Specifies the ratio for dividing the peripheral
clock (Pφ) to generate the IRCLK clock pulse to
be used for IrDA. IRCLK is obtained as follows:
IRCLK = 1/(2N + 2) × Pφ
N = Value set by ICK3 to ICK0
Output Pulse Width Select
Selects an IrDA output pulse width that is 3/16 of
the bit length for 115 kbps or 3/16 of the bit
length for the selected baud rate.
0: Pulse width is 3/16 of the bit length
1: Pulse width is 3/16 of 115 kbps bit length for
Reserved
These bits are always read as 0. The write value
should always be 0.
Section 19
the baud rate selected by ICK3 to ICK0
Rev. 3.00 Jan. 18, 2008 Page 641 of 1458
Ni
8
8
8
8
8
Infrared Data Association Module (IrDA)
Ni+1
9
9
9
9
9
REJ09B0033-0300