MEC1632 datasheet(74/636 Pages) MICROCHIP

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MEC1632

DS00001592B-page 74

 2012-2018 Microchip Technology Inc.

5.9

Logical Device Configuration/Control Registers

A separate set of control and configuration registers exist for each Logical Device and is selected with the Logical Device

# Register (07h). The Logical Devices are listed in Table 5-1, “Logical Devices,” on page 63, and the registers within

each Logical Device are listed in Section 5.9.2, on page 74.

5.9.1

LOGICAL DEVICE ACTIVATION

Many Logical Devices have a register, called Activate, that is used to activate the Logical Device. When a Logical Device

is inactive, it is powered down and will not respond to an AHB request. The format for the Activate Register is shown in

Table 5-12, "Activate Register". The Activate Register for the LPC Logical Device is shown in Table 6-6, “Activate Reg-

ister,” on page 89.

ACTIVATE

When this bit is 1, the logical device is powered and functional. When this bit is 0, the logical device is powered down

and inactive.

5.9.2

CONFIGURATION REGISTER MAP

The MEC1632 Configuration register map is shown in Table 5-14, "MEC1632 Configuration Register Map". Logical

Device numbers are in hexadecimal. All Logical Devices are accessible by both the Host and the EC. Logical Devices

values between 00h and 3Fh are defined for the MEC1632; however some are reserved.

The EC has access to all Configuration Registers and all Global Control registers directly on the AHB bus. The address

of a Global Control register is FF FF00h+offset, where offset is the offset listed in Column 2 of Table 5-15, "Chip-Level

(Global) Control/Configuration Registers". The other Configuration Registers are accessible at the INDEX (Table 5-14,

Column 1) plus the AHB Address Base (Table 5-13, "Configuration Register AHB Mapping", Column 2). LDN is the Log-

ical Device Number.

TABLE 5-12:

ACTIVATE REGISTER

HOST OFFSET

BYTE0: 30h

8-bit HOST SIZE

EC OFFSET

Frame offset 330h

8-bit EC SIZE

POWER

VTR

00b nSYS_RST DEFAULT

BUS

LPC SPB

BYTE0 BIT

D6D5

D4D3D2

HOST TYPE

RRRRR

R/W

EC TYPE

RRRRR

R/W

BIT NAME

Reserved

Activate

Note:

The Global Configuration Registers are the first 48 bytes of the configuration space Logical Device 3Fh.

TABLE 5-13:

CONFIGURATION REGISTER AHB MAPPING

Logical Device Range

AHB Address Base

00h - 3Fh

FF_0300h + (LDN << 10)

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