PC87309VLJ datasheet(123/192 Pages) NSC

123 / 192 page

Enhanced Serial Port with IR -UART2 (Logical Device 2)

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5.14.3

Shadow of FIFO Control Register (SH_FCR)

This read-only register returns the contents of the FCR reg-

ister in bank 0.

See “FIFO Control Register (FCR)” on page 112 for bit de-

scriptions.

5.14.4

Link Control Register (LCR) and Bank Select

These registers are the same as the registers at offset 03h

in bank 0.

5.15 BANK 4 – IR MODE SETUP REGISTER

TABLE 5-18. Bank 4 Register Set

5.15.1

Reserved Registers

Bank 4 registers with offsets 00h and 01h are reserved.

5.15.2

Infrared Control Register 1 (IRCR1)

This register enables the Sharp-IR or SIR infrared mode in

the Non-Extended mode of operation.

Upon reset, all bits are set to 0.

Bits 1,0 - Reserved

Read/Write 0.

Bits 3,2 - Sharp-IR or SIR Mode Select (IR_SL1,0), Non-

Extended Mode Only

These bits enable Sharp-IR and SIR modes in Non-Ex-

tended mode. They allow selection of the appropriate in-

frared interface when Extended mode is not selected.

These bits are ignored when Extended mode is selected.

TABLE 5-19. Sharp-IR or SIR Mode Selection

Bits 7-4 - Reserved

Read/Write 0.

5.15.3

Link Control Register (LCR) and Bank Select

These registers are the same as the registers at offset 03h

in bank 0.

5.15.4

Reserved Registers

Bank 4 registers with offsets 04h-07h are reserved.

5.16 BANK 5 – INFRARED CONTROL REGISTERS

TABLE 5-20. Bank 5 Registers

Offset

Name

Description

00-01h

Reserved

02h

IRCR1

Infrared Control Register 1

03h

LCR/

BSR

Link Control/

Bank Select Registers

04-07h

Reserved

76543210

Reset

Required

FIFO Control Register

(SH_FCR)

Bank 3,

Shadow of

TXSR

TXFTH0

TXFHT1

RXFTH0

RXFTH1

FIFO_EN

RXSR

Reserved

Offset 02h

IR_SL1

IR_SL0

Selected Mode

UART (Default)

Reserved

Sharp-IR

SIR

Offset

Name

Description

00-02h

Reserved

03h

LCR/

BSR

Link Control Register/

Bank Select Register

04h

IRCR2

Infrared Control Register 2

05h - 07h

Reserved

76543210

Reset

Required

(IRCR1)

Bank 4,

Infrared Control Register1

IR_SL0

Reserved

IR_SL1

Offset 02h

Reserved

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