PCI1221 datasheet(76/123 Pages) TI

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general-purpose output register

Bit

Name

General-purpose output

Type

R/W

Default

General-purpose output

Type:

Read only, read/write (see individual bit descriptions)

Offset:

AEh (function 0)

Default:

0000h

Description: The general-purpose output register is used for control of the general-purpose outputs.

Access this register only through function 0. See Table 33 for a complete description of the

Table 33. General-Purpose Output Register

BIT

SIGNAL

TYPE

FUNCTION

15-5

RSVD

Reserved. Bits 15-5 are read only and return 0 when read. Write transactions have no effect.

GPO4_DATA

R/W

GPO4 Data Bit. The value written to bit 4 represents the logical value of the data driven to the

MFUNC5 terminal if configured as GPO4. Read transactions return the last data value written.

GPO3_DATA

R/W

GPIO3 Data Bit. The value written to bit 3 represents the logical value of the data driven to the

MFUNC4 terminal if configured as GPO3. Read transactions return the last data value written.

GPO2_DATA

R/W

GPO2 Data Bit. The value written to bit 2 represents the logical value of the data driven to the

MFUNC2 terminal if configured as GPO2. Read transactions return the last data value written.

GPO1_DATA

R/W

GPO1 Data Bit. The value written to bit 1 represents the logical value of the data driven to the

MFUNC1 terminal if configured as GPO1. Read transactions return the last data value written.

GPO0_DATA

R/W

GPO0 Data Bit. The value written to bit 0 represents the logical value of the data driven to the

MFUNC0 terminal if configured as GPO0. Read transactions return the last data value written.

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