XA-C3 NXP Semiconductors, XA-C3 Datasheet - Page 63

• Manufacturer Part Number: XA-C3
• Description: The XA-C3 is a member of the Philips XA (eXtended Architecture) family of high-performance 16-bit single-chip microcontrollers
• Manufacturer: NXP Semiconductors

Philips Semiconductors
MBXSR (Message Buffer and XRAM Segment Register)
MBXSR
XRAMB (XRAM Base Address)
2000 Jan 25
Address: MMR Base + 291h
Address: MMR Base + 290h
XA 16-bit microcontroller family
32K/1024 OTP CAN transport layer controller
1 UART, 1 SPI Port, CAN 2.0B, 32 CAN ID filters, transport layer co-processor
7
Figure 45. Formation of the XRAM base address, with object n message buffer mapped to off–chip data memory.
512 Bytes
XRAM
Buffer size
512 Bytes
Object n
xyFFFFh
6
Buffer size
xyFFFFh
Object n
Figure 46. Object n Message Buffer mapped into the on–chip XRAM.
Object n Message Buffer
Segment xy in Data
a23 – a16 of XRAM (and all message buffers) Base Address
Memory Space
Object n Message Buffer
5
XRAM
Segment xy in Data
Memory Space
XRAM
4
xy0000h
56
xy0000h
a23
a23
MBXSR[7:0]
MBXSR[7:0]
a23
a23
Access: Read, write.
Reset value: FFh
Access: Read, write
Reset value: FEh
MBXSR[7:0]
MBXSR[7:0]
3
a16
a16
a15
a15
XRAMB[7:1] 0
a16
a16
a15
a15
XRAMB[7:1] 0
2
MnBLR
a8
a7
MnBLR
a8
a7
00h
1
00h
SU01342
SU01343
a0
a0
Preliminary specification
a0
a0
XA-C3
0