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4 serial port interface, Functional specifications – Renesas M3A-HS37 User Manual

Page 22

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Functional Specifications

2.4 Serial Port Interface

Rev.1.00 Oct 09, 2008

2-6

REJ11J0021-0100

2

2.4 Serial Port Interface

SH7137 SCI0 or SCI 1 pins can be connected to the serial port connector on the M3A-HS37 (default: PE1 pin and PE2 pin are

connected to the serial port connector, J3). The serial port switch jumpers (JP7, JP8, JP9, and JP10) switch the SCI channels

connected to a serial port connector.

Figure 2.4.1 shows the serial port block diagram on the M3A-HS37, and Table 2.4.1 lists the jumper connections.

SH7137

DCD

RxD

TxD

DTR

GND

DSR

RTS

CTS

RI

1

2

3

4

5

6

7

8

9

NC

NC

Serial port

connector

RS-232C

driver

PA3/RXD1/A3/IRQ1

PA4/TXD1/A4/IRQ2

PE1/TIOC0B/RXD0

PE2/TIOC0C/TXD0

1

2

3

JP8

1

2

3

JP7

A3
A4

1

2

3

JP9

1

2

3

JP10

SRAM

CPU-VCC

CPU-VCC

4.7 K

4.7 K

CPU-VCC

CPU-VCC

CPU-VCC

(M5M5256DFP-70GI)

CPU-VCC:3.3 V/ 5 V

Figure 2.4.1 Serial Port Block Diagram

Table 2.4.1 Jumper Connections

SCI0

SCI1

SRAM

JP7 JP8 JP9 JP10

Y N Y 2-3 2-3 2-3 2-3

N Y N 1-2 1-2 1-2 1-2

Note: Y = yes, N = no

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