User Manual

UM10360 All information provided in this document is subject to legal disclaimers. © NXP B.V. 2010. All rights reserved.
User manual Rev. 2 — 19 August 2010 378 of 840
NXP Semiconductors
UM10360
Chapter 16: LPC17xx CAN1/2
16.14.3 Standard Frame Individual Start Address register (SFF_sa -
0x4003 C004)
[1] Write access to the look-up table section configuration registers are possible only during the Acceptance
filter bypass mode or the Acceptance filter off mode.
16.14.4 Standard Frame Group Start Address register (SFF_GRP_sa -
0x4003 C008)
[1] Write access to the look-up table section configuration registers are possible only during the Acceptance
filter bypass mode or the Acceptance filter off mode.
16.14.5 Extended Frame Start Address register (EFF_sa - 0x4003 C00C)
Table 343. Standard Frame Individual Start Address register (SFF_sa - address 0x4003 C004) bit description
Bit Symbol Description Reset Value
1:0 - Reserved, user software should not write ones to reserved bits. The value read from a
reserved bit is not defined.
NA
10:2 SFF_sa
[1]
The start address of the table of individual Standard Identifiers in AF Lookup RAM. If the
table is empty, write the same value in this register and the SFF_GRP_sa register
described below. For compatibility with possible future devices, write zeroes in bits 31:11
and 1:0 of this register. If the eFCAN bit in the AFMR is 1, this value also indicates the size
of the table of Standard IDs which the Acceptance Filter will search and (if found)
automatically store received messages in Acceptance Filter RAM.
0
31:11 - Reserved, user software should not write ones to reserved bits. The value read from a
reserved bit is not defined.
NA
Table 344. Standard Frame Group Start Address register (SFF_GRP_sa - address 0x4003 C008) bit description
Bit Symbol Description Reset Value
1:0 - Reserved, user software should not write ones to reserved bits. The value read from
a reserved bit is not defined.
NA
11:2 SFF_GRP_sa
[1]
The start address of the table of grouped Standard Identifiers in AF Lookup RAM. If
the table is empty, write the same value in this register and the EFF_sa register
described below. The largest value that should be written to this register is 0x800,
when only the Standard Individual table is used, and the last word (address 0x7FC)
in AF Lookup Table RAM is used. For compatibility with possible future devices,
please write zeroes in bits 31:12 and 1:0 of this register.
0
31:12 - Reserved, user software should not write ones to reserved bits. The value read from
a reserved bit is not defined.
NA
Table 345. Extended Frame Start Address register (EFF_sa - address 0x4003 C00C) bit description
Bit Symbol Description Reset Value
1:0 - Reserved, user software should not write ones to reserved bits. The value read from a
reserved bit is not defined.
NA
10:2 EFF_sa
[1]
The start address of the table of individual Extended Identifiers in AF Lookup RAM. If the
table is empty, write the same value in this register and the EFF_GRP_sa register
described below. The largest value that should be written to this register is 0x800, when
both Extended Tables are empty and the last word (address 0x7FC) in AF Lookup Table
RAM is used. For compatibility with possible future devices, please write zeroes in bits
31:11 and 1:0 of this register.
0
31:11 - Reserved, user software should not write ones to reserved bits. The value read from a
reserved bit is not defined.
NA