INDUSTRIAL I/O PACK SERIES
AVME9675A
VMEx64 bus 6U CARRIER BOARD
Acromag, Inc. Tel: 248-295-0310
- 19 -
http://www.acromag.com
- 19 -
https://ww.acromag.com
13
C11
C12
C13
C14
C15
GND
14
C16
C17
C18
C19
C20
NP
15
C21
C22
C23
C24
C25
GND
16
C26
C27
C28
C29
C30
NP
17
C31
C32
C33
C34
C35
GND
18
C36
C37
C38
C39
C40
NP
19
C41
C42
C43
C44
C45
GND
Note: The letter in front of the number identifies the IP Module
Slot. The number identifies the I/O pin number of that IP Module.
Example: D1
D = IP Module in Slot “D”
1 = I/O Pin number “1”
(This pin on the IP Module connects to P0, Pin 1, Row A.)
(NP) = No Pin for PO connector (Row F is for upper ground shield).
2.12 POWER UP TIMING AND LOADING
The AVME9670A board uses a Field Programmable Gate-Array (FPGA) to
handle the bus interface and control logic timing. Upon power-up, the FPGA
automatically clocks in configuration vectors from a local PROM to initialize
the logic circuitry for normal operation. This time is measured as the first
145mS (typical) after the +5 Volt supply rises to +2.5 Volts at power-up. The
VME64x bus specification requires that the bus master drive the system
reset for the first 200mS after power-up, thus inhibiting any data transfers
from taking place.
IP control registers are also reset following a power-up sequence, disabling
interrupts, etc. (see Section 3 for details).
2.13 DATA TRANSFER TIMING
VME64x bus data transfer time is measured from the falling edge of DSx* to
the falling edge of DTACK* during a normal data transfer cycle. Typical
transfer times are given in the following table.