V4082V1ST3B EMMICRO [EM Microelectronic - MARIN SA], V4082V1ST3B Datasheet - Page 6

• Manufacturer Part Number: V4082V1ST3B
• Description: Identification ROM
• Manufacturer: EMMICRO [EM Microelectronic - MARIN SA]

Custom V4082
Upon special request, the V4082 is available with
portions of the 48-bit serial number defined by the
customer.
V4082xxx.
subfields of which EM Microelectronic-Marin will assign a
customer IC number in the most significant 12 bits.
Repetitive Read-out of data
If the system generates more read time slots than
necessary, the V4082 continues to output the ROM
code, restarting from zero address. By issuing a reset
sequence, this procedure can be stopped. The V4082
will then again issue a presence detect signal and expect
the command word from the system.
Copyright © 2004, EM Microelectronic-Marin SA
63
CCCCCCCC 00000000 11111100 0000NNNN
CRC-Code
MSB
The custom 48-bit number has two specific
56 55
These
Customer #
(default)
special
48 47
parts
cust. start
are
(default)
40 39
value
designated
MSB
32 31
NNNNNNNN NNNNNNNN
6
The next most significant 8 bits are selectable by the
customer as a starting value, and the least significant 28
bits are non-selectable and will increment by one,
starting at 0000h. The type identifier code for a custom
V4082 is 81h.
The default memory map is as follows (first bit out (LSB)
= Bit 0):
incremented number code
24 23
16 15
NNNNNNNN
www.emmicroelectronic.com
8
LSB
V4082
7
10000001
Type ID
(81h)
LSB
0