mc68hc912bd32 Freescale Semiconductor, Inc, mc68hc912bd32 Datasheet - Page 193

• Manufacturer Part Number: mc68hc912bd32
• Description: 16-bit Device Composed Of Standard On-chip Peripherals
• Manufacturer: Freescale Semiconductor, Inc

Programmer’s Model
23-sibus
$xx1F
$xx2F
$xx4F
$xx5F
$xx00
$xx20
$xx40
$xx50
ACTIVE RECEIVE FIFO BUFFER
ACTIVE TRANSMIT BUFFER
GENERAL CONTROL
BUFFER CONTROL
32 BYTES
14 BYTES
14 BYTES
16 BYTES
This section describes the content and use of the registers in the serial
bus interface module. An overview of all registers is shown in
There are three sets of registers which are accessible by the CPU:
•
•
•
Freescale Semiconductor, Inc.
For More Information On This Product,
the general control registers,
the 16 buffer control registers,
and the 16 configurable message buffers with one 14 bytes active
transmit buffer, one 14 bytes active receive buffer and one 14
bytes active receive FIFO buffer mirrored to the memory map.
Figure 33 Register Map
Go to: www.freescale.com
Byteflight™ Module
LOCK
LOCK
GETIDX
16 of 18 message buffers are accessible by window
scheme
BUFFER 17 - 14 BYTES
BUFFER 16 - 14 BYTES
BUFFER 15 - 14 BYTES
BUFFER 2 - 14 BYTES
BUFFER 1 - 14 BYTES
BUFFER 0 - 14 BYTES
MC68HC912BD32 Rev 1.0
assignment of buffers
Transmit
Receive, FIFO
Programmer’s Model
Byteflight™ Module
PUTIDX
Figure
33.