IBM0418A81QLAB IBM0436A81QLAB
IBM0418A41QLAB IBM0436A41QLAB
8Mb (256Kx36 & 512x18) and 4Mb (128Kx36 & 256Kx18) SRAM
Scan Register Definition
Register Name
Bit Size x18
Bit Size x36
Instruction
3
1
3
1
Bypass
ID
Boundary Scan *
32
51
32
70
* The Boundary Scan chain consists of the following bits:
•
•
•
•
•
36 or 18 bits for Data Inputs, depending on x18 or x36 configuration
18 bits for SA0 - SA17 in x36, 19 bits for SA0 - SA18 in x18
4 bits for SBWa - SBWd in x36, 2 bits for SBWa and SBWb in x18
9 bits for K, K, ZQ, SS, G, SW, ZZ, M1 and M2
3 bits for Place Holders for 8 Mb, 4bits for Place Holders for 4Mb
* K and K clocks connect to a differential receiver that generates a single-ended clock signal. This signal and its inverted value are used
for Boundary Scan sampling.
ID Register Definition
Field Bit Number and Description
Part
Revision
Number (31:28)
Device Density and
Configuration (27:18)
Vendor Definition
(17:12)
Manufacturer JEDEC
Code (11:1)
Start
Bit(0)
011 010 1100
011 100 1011
101 111 0011
101 101 0100
128K x 36
256K x 18
512K x 18
256K x 36
XXXX
XXXX
XXXX
XXXX
xxxxxx
xxxxxx
xxxxxx
xxxxxx
000 101 001 00
000 101 001 00
000 101 001 00
000 101 001 00
1
1
1
1
crrh3316.08
12/00
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Use is further subject to the provisions at the end of this document.
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