PC87393 datasheet(53/148 Pages) NSC

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2.0 Device Architecture and Configuration (Continued)

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2.13 SERIAL PORT 2 CONFIGURATION

2.13.1

General Description

Serial Port 2 includes IR functionality as described in the Serial Port 2 with IR chapter.

2.13.2

Logical Device 2 (SP2) Configuration

Table 21 lists the configuration registers which affect the Serial Port 2. Only the last register (F0h) is described here. See

Sections 2.2.3 and 2.2.4 for descriptions of the others.

Table 21. Serial Port 2 Conﬁguration Registers

Index

Conﬁguration Register or Action

Type

Reset

30h Activate. See also bit 0 of the SIOCF1 register and bit 2 of the SIOCF6 register. R/W

00h

60h Base Address MSB register. Bits 7-3 (for A15-11) are read only, 00000b.

R/W

02h

61h Base Address LSB register. Bit 2-0 (for A2-0) are read only, 000b.

R/W

F8h

70h Interrupt Number and Wake-Up on IRQ Enable register

R/W

03h

71h Interrupt Type. Bit 1 is R/W; other bits are read only.

R/W

03h

74h DMA Channel Select 0 (RX_DMA)

R/W

04h

75h DMA Channel Select 1 (TX_DMA)

R/W

04h

F0h Serial Port 2 Conﬁguration register

R/W

02h

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