Section 16
Serial Pin Multiplexed Modes
Rev. 1.00 Mar. 12, 2008 Page 545 of 1178
REJ09B0403-0100
16.4
Operation of Serial Pin Multiplexed Modes
16.4.1
Serial Pin Multiplexed Mode 0
(Default; SMR0 Register [bits SM2, SM1, SM0] = [0 0 0])
This mode is the default configuration and each COM port is used for its respective serial
communication module: COM1 works with SCIF, COM2 with SCI_1, and COM3 with SCI_3.
DCD
,
RI
,
DSR
,
DTR
,
CTS
,
RTS
, RxDF, and TxDF of SCIF are connected to the corresponding
pins of COM1. Tx/Rx of COM1 are tied across to RxDF/TxDF (cross connection).
RxD1 and TxD1 of SCI_1 are cross-connected to COM2. RxD3 and TxD3 of SCI_3 are cross-
connected to COM3.
Figure 16.1 illustrates the pin connection in serial pin multiplexed mode 0.
COM2
COM3
SCI_1
SCI_3
BMC (H8S)
RxD1
TxD1
RxD3
TxD3
Rx
Tx
Rx
Tx
COM1
SCIF
P24
P25
P26
P27
P64
P65
P86
P87
P51
P50
P53
P52
DCD
RI
DSR
DTR
CTS
RTS
RxDF
TxDF
DCD
RI
DSR
DTR
CTS
RTS
Rx
Tx
Figure 16.1 Serial Pin Multiplexed Mode 0
Summary of Contents for H8S Family
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Page 70: ...Section 1 Overview Rev 1 00 Mar 12 2008 Page 22 of 1178 REJ09B0403 0100...
Page 108: ...Section 2 CPU Rev 1 00 Mar 12 2008 Page 60 of 1178 REJ09B0403 0100...
Page 116: ...Section 3 MCU Operating Modes Rev 1 00 Mar 12 2008 Page 68 of 1178 REJ09B0403 0100...
Page 152: ...Section 5 Interrupt Controller Rev 1 00 Mar 12 2008 Page 104 of 1178 REJ09B0403 0100...
Page 206: ...Section 6 Bus Controller BSC Rev 1 00 Mar 12 2008 Page 158 of 1178 REJ09B0403 0100...
Page 420: ...Section 9 14 Bit PWM Timer PWMX Rev 1 00 Mar 12 2008 Page 372 of 1178 REJ09B0403 0100...
Page 476: ...Section 12 Watchdog Timer WDT Rev 1 00 Mar 12 2008 Page 428 of 1178 REJ09B0403 0100...
Page 552: ...Section 14 CRC Operation Circuit CRC Rev 1 00 Mar 12 2008 Page 504 of 1178 REJ09B0403 0100...
Page 712: ...Section 18 I2 C Bus Interface IIC Rev 1 00 Mar 12 2008 Page 664 of 1178 REJ09B0403 0100...
Page 804: ...Section 19 LPC Interface LPC Rev 1 00 Mar 12 2008 Page 756 of 1178 REJ09B0403 0100...
Page 838: ...Section 20 Ethernet Controller EtherC Rev 1 00 Mar 12 2008 Page 790 of 1178 REJ09B0403 0100...
Page 964: ...Section 24 RAM Rev 1 00 Mar 12 2008 Page 916 of 1178 REJ09B0403 0100...
Page 1066: ...Section 25 Flash Memory Rev 1 00 Mar 12 2008 Page 1018 of 1178 REJ09B0403 0100...
Page 1098: ...Section 26 Boundary Scan JTAG Rev 1 00 Mar 12 2008 Page 1050 of 1178 REJ09B0403 0100...
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