Epson Research and Development

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Vancouver Design Center

 

 

 

3 S1D13705 Host Bus Interface

This section is a summary of the host bus interface mode used on the S1D13705 to interface to the MPC821.

The S1D13705 implements a 16-bit interface to the host microprocessor which may operate in one of several modes compatible with most of the popular embedded microprocessor families. The interface mode used for the MPC821 is:

Generic #1 (Chip Select, plus individual Read Enable/Write Enable for each byte).

3.1Host Bus Interface Modes

Table 3-1: Host Bus Interface Pin Mapping

S1D13705

Generic #1

Pin Names

 

 

 

AB[15:1]

A[15:1]

 

 

AB0

A0

 

 

DB[15:0]

D[15:0]

 

 

WE1#

WE1#

 

 

CS#

External Decode

 

 

BCLK

BCLK

 

 

BS#

connect to VSS

 

 

RD/WR#

RD1#

 

 

RD#

RD0#

 

 

WE0#

WE0#

 

 

WAIT#

WAIT#

 

 

RESET#

RESET#

 

 

For details on configuration, refer to the S1D13705 Hardware Functional Specification, document number X27A-A-001-xx.

Interfacing to the Motorola MPC821 Microprocessor

S1D13705

Issue Date: 01/02/13

X27A-G-010-02

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Epson technical manual S1D13705 Host Bus Interface, Host Bus Interface Modes