Seiko Cal. V17 User Manual download pdf (Page 18)

5. Connection Example with FreeScale iMX21

14 EPSON S1R72V17 CPU Connection Guide

(Rev. 1.0)

5. Connection Example with FreeScale iMX21

5.1 Connection Example

This section illustrates an example of a connection between the proven CPU-IF on the S1R72V17

and the iMX21.

The connection uses the S1R72V17 16-bit BE mode bus mode.

iMX21

（

MC9328MX21

）

S1R72V17

NVDD1 to 6 CVDD

[

8:1

]

[

8:1

]

[

15:0

]

[

15:0

]

CS1

OE/PC

IOWR

EB3/DQM3/PC

IORD

BEL

(

[

])

EB2/DQM3/PC

REG

WRH

(

XBEH

)

RW/PC

WRL

(

XWR

)

CSPI1

RDY

DREQ

LD16

DACK

LD17

INT

Typ: 1.8V

Fig. 5-1 Connection example with iMX21

1) CPU-IF power supply voltage

In this connection example, the CPU-IF supply voltage is Typ 1.8 V.

iMX21 IO supply voltage (NVDD1 to 6): 1.7 V to 3.3 V

S1R72V17 CPU-IF supply voltage (CVDD): 1.65 V to 3.6 V

1 2 ... 13 14 15 16 17 18 19 20 21 22 23 24

S1R72V17 1
CPU Connection Guide 1
Table of Contents 4
1. Introduction 5
Even-number address 10
Odd-number address 10
(Rev. 1.0) 11
5.1 Connection Example 18
EPSON 15 19
EPSON 17 21
• Bus cycle waveform 21
Revision History 23

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