MEC1632 datasheet(82/636 Pages) MICROCHIP

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MEC1632

DS00001592B-page 82

 2012-2018 Microchip Technology Inc.

6.3

LPC Logical Device

The LPC Logical Device structure is illustrated in Figure 6-1, "LPC Interface in MEC1632".

The LPC Logical Device is directly connected to two internal buses, the 32-bit AHB as well as the SPB. The SPB inter-

face is 32-bits. In addition, it is connected to the external LPC bus.

Host accesses to Configuration Registers for each Logical Device on the MEC1632 are managed by a Configuration

block described in Section 5.0, "Logical Device Configuration," on page 63. Configuration registers are accessed

through the LPC IO Configuration Register Port. The LPC Logical Device translates the Configuration address to an

AHB address and the Host LPC access is converted into an AHB transaction inside the MEC1632.

Host I/O accesses to Configuring Runtime Register Addresses are converted directly to AHB accesses. The LPC

address is translated by the LPC Bus Interface to an AHB address inside the MEC1632 and the access becomes an

access on the AHB bus.

FIGURE 6-2:

LPC LOGICAL DEVICE

SPB Slave

Interface

AHB Master

Interface

Configuration

AHB Bus

SPB Bus

LPC Bus

Interface

Control and

Status

LPC Bus

Chip Boundary

LPC

Logical Device

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