F81216 Ver la hoja de datos (PDF) - Feature Integration Technology Inc.

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F81216

LPC to 4 UART

Feature Integration Technology Inc. 

F81216

To enable configuration registers programming, entry key must output twice to index port

continuously. The entry key is decided by power on setting pins RTS2#/PS_CONF_KEY1 and

RTS3#/PS_CONF_KEY0 as following:

RTS2#/PS_CONF_KEY1

0

0

1

1

RTS3#/PS_CONF_KEY0

0

1

0

1

Entry key

0x77 ( default )

0xA0

0x87

0x67

To exit configuration registers programming, output 0xAA to index port.

Sample code for configuration:

1. Clock in used 48MHz, UART 1~6 address (0x3f8, 0x2f8, 0x3e8, 0x2e8,IRQ(3, 4, 5 ,9, Entry

key is 0x77:

outportb(0x4e, 0x77);

outportb(0x4e, 0x77); //Entry configuration mode

outportb(0x4e, 0x25); //Select register index 0x25

outportb(0x4f, 0x01); //Set bit 0 to 1 select clock input to 48MHz

outportb(0x4e, 0x07); //Select register index 0x07

outportb(0x4f, 0x00); //Select LDN 0

outportb(0x4e, 0x60); //Select LDN 0 register index 0x60

outportb(0x4f, 0x03); //Set UART 1 base address high byte to 0x03

outportb(0x4e, 0x61); //Select LDN 0 register index 0x61

outportb(0x4f, 0xf8); //Set UART 1 base address low byte to 0xf8

outportb(0x4e, 0x70); //Select LDN 0 register index 0x70

outportb(0x4f, 0x03); //Set UART 1 interrupt channel to IRQ 3

outportb(0x4e, 0x30); //Select LDN 0 register index 0x30

outportb(0x4f, 0x01); //Enable UART 1

outportb(0x4e, 0x07); //Select register index 0x07

outportb(0x4f, 0x01); //Select LDN 1

outportb(0x4e, 0x60); //Select LDN 1 register index 0x60

outportb(0x4f, 0x02); //Set UART 2 base address high byte to 0x02

outportb(0x4e, 0x61); //Select LDN 1 register index 0x61

outportb(0x4f, 0xf8); //Set UART 2 base address low byte to 0xf8

outportb(0x4e, 0x70); //Select LDN 1 register index 0x70

-17-

August, 2007

V0.32P

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