LPC47M14X datasheet(156/205 Pages) SMSC

156 / 205 page

SMSC DS – LPC47M14X

Page 156

Rev. 03/19/2001

LOGICAL DEVICE C CONFIGURATION REGISTERS (USB Hub)

0x30

R/W

0x00

Activate (see Table 75)

(Note 2)

0xF0

R/W

0x00

OSC_CLK (Note 2)

0xF1

R/W

0x24

IdVendor_Low (Notes 1 & 2 )

0xF2

R/W

0x04

IdVendor_High (Notes 1 & 2 )

0xF3

R/W

0x40

IdProduct_Low (Notes 1 & 2 )

0xF4

R/W

0x01

IdProduct_High (Notes 1 & 2 )

0xF5

R/W

0x00

BcdDevice_Low (Notes 1 & 2 )

0xF6

R/W

0x00

BcdDevice_High (Notes 1 & 2 )

0xF7

R/W

0x00

HubControl_1

(Notes 1 & 2 )

Note 1: CR22 bit 5 is reset on VTR only.

Note 2: The registers for the USB Hub are powered by VTR.

Note: Reserved registers are read-only, reads return 0.

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 62 – Chip Level Registers

ADDRESS

DESCRIPTION

STATE

Chip (Global) Control Registers

0x00 -

0x01

Reserved - Writes are ignored, reads return 0.

Config Control

Default = 0x00

on VCC POR,

VTR POR and

HARD 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

HARD 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.

LPC47M14X Datasheet(PDF) 156 Page - SMSC Corporation

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