Chapter 14 Freescale’s Scalable Controller Area Network (S12MSCANV3)
MC9S12XDP512 Data Sheet, Rev. 2.11
650 Freescale Semiconductor
14.3.3.2 Data Segment Registers (DSR0-7)

The eight data segment registers, each with bits DB[7:0], contain the data to be transmitted or received.

The number of bytes to be transmitted or received is determined by the data length code in the

corresponding DLR register.

Module Base + 0x00X3
76543210
R
W
Reset: xxxxxxxx
= Unused; always read ‘x’

Figure 14-32. Identifier Register 3 — Standard Mapping

Module Base + 0x0004 (DSR0)
0x0005 (DSR1)
0x0006 (DSR2)
0x0007 (DSR3)
0x0008 (DSR4)
0x0009 (DSR5)
0x000A (DSR6)
0x000B (DSR7)
76543210
R
DB7 DB6 DB5 DB4 DB3 DB2 DB1 DB0
W
Reset: xxxxxxxx

Figure 14-33. Data Segment Registers (DSR0–DSR7) — Extended Identifier Mapping

Table 14-32. DSR0–DSR7 Register Field Descriptions

Field Description
7:0
DB[7:0]
Data bits 7:0