MC68HC58 Motorola, MC68HC58 Datasheet - Page 97

• Manufacturer Part Number: MC68HC58
• Description: Data Link Controller
• Manufacturer: Motorola

C.3 Status Byte Register
SBR
MC68HC58
TECHNICAL DATA
RESET:
—
Status Byte Register
7
0
Table C-14 Transmit FIFO Status Field Encoding (TMFS)
Table C-10 Receive FIFO Status Field Encoding (RFS)
Value
000
001
010
011
100
101
110
111
RFS
6
0
Value
Value
Value
Value
Table C-12 Network Fault Bit (NETF)
00
01
10
11
Table C-11 Data Link Idle Bit (DLI)
0
1
0
1
0
1
Table C-13 4X Mode Bit (4XMD)
5
0
Completion code at head of buffer, another frame available
Completion code at head of buffer, more bytes available
Data byte in 13th buffer position, no completion code
DLI
X
4
Completion code only at head of buffer
DLC REGISTERS
Active state not sensed after 60 s
Active state occurred before 60 s
DLCP/S operating in normal mode
Buffer contains more than one byte
DLCP/S operating at 41.67 kbps
Buffer contains a completion code
Buffer contains data bytes
SAE J1850 bus is active
SAE J1850 bus is idle
One data byte in buffer
Buffer invalid or empty
NETF
Buffer almost full
3
0
Buffer empty
Description
Description
Description
Description
Description
Buffer full
4XMD
2
0
1
0
TMFS
0
0
MOTOROLA
C-3