h8s-2172 Renesas Electronics Corporation., h8s-2172 Datasheet - Page 327
h8s-2172
Manufacturer Part Number
h8s-2172
Description
Renesas 16-bit Single-chip Microcomputer H8s Family H8s-2100 Series
Manufacturer
Renesas Electronics Corporation.
Datasheet
1.H8S-2172.pdf
(570 pages)
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11.3.6
SCR performs enabling or disabling of SCI transfer operations and interrupt requests, and
selection of the transfer/receive clock source. For details on interrupt requests, refer to section
11.5, Interrupt Sources.
Bit
1
0
Bit
7
6
Bit Name
CKS1
CKS0
Bit Name
TIE
RIE
Serial Control Register (SCR)
Initial
Value
0
0
Initial
Value
0
0
R/W
R/W
R/W
R/W
R/W
R/W
Clock Select 1 and 0
These bits select the clock source for the on-chip baud
rate generator.
00: φ clock (n = 0)
01: φ/4 clock (n = 1)
10: φ/16 clock (n = 2)
11: φ/64 clock (n = 3)
For the relation between the bit rate register setting and
the baud rate, see section 11.3.8, Bit Rate Register
(BRR). n is the decimal display of the value of n in BRR
(see section 11.3.8, Bit Rate Register (BRR)).
Transmit Interrupt Enable
Receive Interrupt Enable
Description
Description
When this bit is set to 1, TXI interrupt request is
enabled.
TXI interrupt request cancellation can be performed by
reading 1 from the TDRE flag, then clearing it to 0, or
clearing the TIE bit to 0.
When this bit is set to 1, RXI and ERI interrupt requests
are enabled.
RXI and ERI interrupt request cancellation can be
performed by reading 1 from the RDRF flag, or the
FER, PER, or ORER flag, then clearing the flag to 0, or
by clearing the RIE bit to 0.
Rev. 2.00, 03/04, page 295 of 534
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