HD6417618 RENESAS [Renesas Technology Corp], HD6417618 Datasheet - Page 378

• Manufacturer Part Number: HD6417618
• Description: 32-Bit RISC Microcomputer SuperHTM RISC engine Family / SH7618 Series
• Manufacturer: RENESAS [Renesas Technology Corp]

Section 14 Serial Communication Interface with FIFO (SCIF)
14.3.8
SCBRR is an 8-bit register that, together with the baud rate generator clock source selected by the
CKS1 and CKS0 bits in the serial mode register (SCSMR), determines the serial transmit/receive
bit rate.
The CPU can always read and write to SCBRR. SCBRR is initialized to H'FF by a power-on reset.
Each channel has independent baud rate generator control, so different values can be set in three
channels.
The SCBRR setting is calculated as follows:
• Asynchronous mode:
• Synchronous mode:
Rev. 6.00 Jun. 12, 2007 Page 346 of 610
REJ09B0131-0600
N =
N =
B:
N:
Pφ: Operating frequency for peripheral modules (MHz)
n:
Bit Rate Register (SCBRR)
8 × 2
64 × 2
Bit rate (bits/s)
SCBRR setting for baud rate generator (0 ≤ N ≤ 255)
(The setting value should satisfy the electrical characteristics.)
Baud rate generator clock source (n = 0, 1, 2, 3) (for the clock sources and values of
n, see table 14.2.)
Pφ
Pφ
2n-1
2n-1
× B
× B
× 10
× 10
6
6
- 1
- 1