12.21 Power Management Data Register

The power management bridge support extension register provides extended power-management features not applicable to the SD host controller; thus, it is read-only and returns 0 when read.

Bit

 

7

6

5

 

4

3

 

2

1

0

 

 

 

 

 

 

 

 

 

 

 

 

Name

 

 

 

 

Power management data

 

 

 

 

 

 

 

 

 

 

 

 

 

 

Type

 

R

R

R

 

R

R

 

R

R

R

 

 

 

 

 

 

 

 

 

 

 

 

Default

 

0

0

0

 

0

0

 

0

0

0

 

 

 

 

 

 

 

 

 

 

 

 

Register:

Power management data

 

 

 

 

Offset:

87h

 

 

 

 

 

 

 

 

 

Type:

Read-only

 

 

 

 

 

 

Default:

00h

 

 

 

 

 

 

 

 

12.22 General Control Register

The general control register provides miscellaneous PCI-related configuration. See Table 12−15 for a complete description of the register contents.

Bit

 

7

 

6

 

5

 

4

 

 

 

 

3

2

1

 

0

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

Name

 

 

 

 

 

 

 

General control

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

Type

 

R

 

RW

RW

 

RW

 

 

RW

RW

RW

 

RW

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

Default

 

0

 

0

 

0

 

0

 

 

 

 

0

0

0

 

0

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

Register:

General control

 

 

 

 

 

 

 

 

 

Offset:

88h

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

Type:

Read/Write, Read-only

 

 

 

 

 

 

 

 

 

Default:

00h

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

Table 12−15. General Control Register

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

BIT

 

FIELD NAME

 

TYPE

 

 

 

 

 

 

 

 

 

 

DESCRIPTION

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

7

 

RSVD

 

 

R

Reserved. Bit 7 returns 0 when read.

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

6−5 ‡

 

INT_SEL

 

 

RW

Interrupt select. These bits are program the INTPIN register and set which interrupt output is used.

 

 

 

 

 

 

 

This field is ignored if one of the USE_INTx terminals is asserted.

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

00 =

INTA

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

01 = INTB

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

10 = INTC

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

11 = INTD

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

4 ‡

 

D3_COLD

 

 

RW

D3cold

 

 

 

support. This bit sets and clears the D3cold

 

support bit in the power management

 

 

 

PME

PME

 

 

 

 

 

 

 

capabilities register.

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

3−1

 

RSVD

 

 

R

Reserved. Bits 3−1 return 0s when read.

 

 

 

 

 

 

 

 

 

 

 

 

0 ‡

 

DMA_EN

 

 

RW

DMA enable. This bit enables DMA functionality of the SD host controller core. When this bit is set,

 

 

 

 

 

 

 

the PGMIF field in the class code register returns 01h and the DMA_SUPPORT bit in the capabilities

 

 

 

 

 

 

 

register of each SD host socket is set. When this bit is 0, the PGMIF field returns 00h and the

 

 

 

 

 

 

 

DMA_SUPPORT bit of each SD host socket is 0.

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

One or more bits in this register are cleared only by the assertion of GRST.

12−14

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Texas Instruments PCI7411, PCI7611, PCI7621, PCI7421 manual 15. General Control Register, 01 = Intb 10 = Intc 11 = Intd, Dmaen