C&H M 2 2 0, Руководство пользователя

Страница: 13 / 30

7
3.0 FUNCTIONAL DESCRIPTION
3.1
OVERVIEW
A simplified functional block diagram is shown in Figure 2.
A(7:1)
D(15:0)
Carrier
Interface
/IACK
/CS
/DS0
/WRITE
GND
+5V
+12V
/DACK
/DREQ
COL(4:1)
Reset &
Power
Supply
Conditioning
ROW _SET(4:1)
DR_EN
VCC
ZGND
VCC
+5VDR
ROW _RESET(4:1)
/RESET
SYSCLK
/DS1
/IRQ
/DTACK
DGND
/RST
N.C.
N.C.
N.C.
COL_DR(4:1) ROW_DR(4:1)
Relay Coils
Driver
Power
Switch
Row
Drivers
Column
Drivers
Module
Control
VCC
DGND
/RST
ROM
ID
EEPROM
Figure 2. M220 Functional Block Diagram
3.1.1 M-Module Interface
The M-Module Interface allows communication between the M220 and the carrier module. The
interface is an asynchronous 16-bit data bus with interrupt capabilities. The interface adheres to
the ANSI/VITA 12-1996 Standard for The Mezzanine Concept M-Module Specification for MA
modules.
3.1.2
Module Control
This block contains all of the logic for the module including all registers, interrupt control and
carrier interface.
C&H Technologies, Inc. <> 445 Round Rock West Drive <> Round Rock, Texas 78681 <> www.chtech.com