LPC47M192 datasheet(170/228 Pages) SMSC

170 / 228 page

SMSC DS – LPC47M192

Page 170

Rev. 03/30/05

DATASHEET

9.3 Chip Level (Global) Control/Configuration Registers [0x00-0x2F]

The chip-level (global) registers lie in the address range [0x00-0x2F]. The design MUST use all 8 bits of the

ADDRESS Port for register selection. All unimplemented registers and bits ignore writes and return zero when read.

The INDEX PORT is used to select a configuration register in the chip. The DATA PORT is then used to access the

selected register. These registers are accessible only in the Configuration Mode.

Table 65 - Chip Level Registers

ADDRESS

DESCRIPTION

Chip (Global) Control Registers

0x00 -

0x01

Reserved - Writes are ignored, reads return 0.

Config Control

Default = 0x00

on VCC POR,

VTR POR and

PCI RESET

0x02 W

The hardware automatically clears this bit after the

write, there is no need for software to clear the bits.

Bit 0 = 1: Soft Reset. Refer to the “Configuration

Registers” table for the soft reset value for each

0x03 - 0x06 Reserved - Writes are ignored, reads return 0.

Logical Device #

Default = 0x00

on VCC POR,

VTR POR,

SOFT RESET and

PCI RESET

0x07 R/W

A write to this register selects the current logical

device.

This allows access to the control and

configuration registers for each logical device.

Note: The Activate command operates only on the

selected logical device.

Card

Level

Reserved

0x08 - 0x1F Reserved - Writes are ignored, reads return 0.

Chip Level, SMSC Defined

Device ID -

Hard wired

Default = 0x60

on VCC POR,

VTR POR,

SOFT RESET and

PCI RESET

0x20 R

A read only register which provides device

identification. Bits[7:0] = 0x60 when read.

Device Rev

Hard wired

= Current Revision

0x21 R

A read only register which provides device revision

information. Bits[7:0] = current revision when read.

PowerControl

Default = 0x00

on VCC POR,

VTR POR,

SOFT RESET and

PCI RESET

0x22 R/W

Bit[0] FDC Power

Bit[1] Reserved

Bit[2] Game Port Power

Bit[3] Parallel Port Power

Bit[4] Serial Port 1 Power

Bit[5] Serial Port 2 Power

Bit[6] MPU-401 Power

Bit[7] Reserved

0: Power Off or Disabled

1: Power On or Enabled

LPC47M192 Datasheet(PDF) 170 Page - SMSC Corporation

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