PC87591L datasheet(349/437 Pages) NSC

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6.0 Host-Controlled Modules and Host Interface (Continued)

Revision 1.07

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Table 58. Keyboard Conﬁguration Registers

6.1.11 Shared Memory Configuration

Logical Device 15 (0F16) (Shared Memory) Conﬁguration

Table 59 lists the configuration registers that affect the shared memory functional block. The shared memory base address

registers point to the shared memory registers described in Section 5.3 on page 297. The memory space to which the shared

memory responds is defined by the configuration registers in the following sections. See “Standard Logical Device Config-

uration Register Definitions” on page 337 and Section 6.1.2 on page 340 for a detailed description of the other configuration

registers.

Table 59. Shared Memory Conﬁguration Registers

Index

Keyboard Conﬁguration Register or Action

Type

Reset

3016

Activate. See also bit 0 of the SIOCF1.

R/W

0016

6016

Base Address MSB register. Bits 7-3 (for A15-11) are read only, ‘00000’.

R/W

0016

6116

Base Address LSB register. Bits 2-0 are read only, ‘000’.

R/W

6016

6216

Command Base Address MSB register. Bits 7-3 (for A15-11) are read only,

‘00000’.

R/W

0016

6316

Command Base Address LSB. Bits 2-0 are read only, ‘100’.

R/W

6416

7016

KBD Interrupt Number and Wake-Up on IRQ Enable register.

R/W

0116

7116

KBD Interrupt Type. Bit 1 is read/write; other bits are read only.

R/W

0316

7416

Report no DMA assignment.

0416

7516

Report no DMA assignment.

0416

Index

Conﬁguration Register or Action

Type

Reset

3016

Activate. When bit 0 is cleared, the registers of this logical device are not

accessible.

R/W

0016

6016

Base Address MSB register.

R/W

0016

6116

Base Address LSB register. Bits 3-0 (for A3-A0) are read only, ‘0000’.

R/W

0016

7016

No interrupt assignment.

0016

7116

No interrupt assignment.

0016

7416

Report no DMA assignment.

0416

7516

Report no DMA assignment.

0416

F416

Shared Memory Conﬁguration register.

R/W

0016 or 0916, de-

pending on the

value of the

SHBM strap input

F516

Shared Memory Base Address High Byte register.

R/W

0016

F616

Shared Memory Base Address Low Byte register.

R/W

0016

F716

Shared Memory Size Conﬁguration register.

R/W

0016

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