User`s guide

DWMBB/A Module Registers
Utility Register (AUTLR)
bits<23:20>
Name: Timeout Limit
Mnemonic: TLIM
Type: R/W, F (hex), which corresponds to 14–15 ms
Timeout Limit determines the time that the DWMBB retries a
transaction on the XMI or waits for returning read data in response
to a successful XMI read command. When the value is exceeded, the
transaction aborts and Transaction Timeout (XBER<13>) sets.
The DWMBB has two timeout limits, a normal timeout limit that
ranges from 0 to 15 ms, and a short timeout limit that ranges from 0
to 960 s. The value of 14 to 15 ms is the default value at power-up
and at node reset. The value of Short Timeout Enable (ACSR<9>)
determines whether the DWMBB uses the normal or short timeout.
The programmable values of timeout follow:
TLIM
ACSR<9>=0
Normal Timeout
Value (ms)
ACSR<9>=1
Short Timeout
Value ( s)
00–10–64
10–10–64
2 1 – 2 64 – 128
3 2 – 3 128 – 192
4 3 – 4 192 – 256
5 4 – 5 256 – 320
6 5 – 6 320 – 384
7 6 – 7 384 – 448
8 7 – 8 448 – 512
9 8 – 9 512 – 576
A 9 – 10 576 – 640
B 10 – 11 640 – 704
C 11 – 12 704 – 768
D 12 – 13 768 – 832
E 13 – 14 832 – 896
F 14 – 15 (default) 896 – 960
3–83