HD64570 HITACHI [Hitachi Semiconductor], HD64570 Datasheet - Page 411

• Manufacturer Part Number: HD64570
• Description: Serial Communications Adaptor
• Manufacturer: HITACHI [Hitachi Semiconductor]

Descriptor
Chain Pointer L (CPL)
Chain Pointer H (CPH)
Buffer Pointer L (BPL)
Buffer Pointer H (BPH)
Buffer Pointer B (BPB)
(Reserved)
Data Length (DLL)
Data Length (DLH)
Status (ST)
(Reserved)
CPU
Mode
0, 1
2 n
2 n + 1
2 n + 2
2 n + 3
2 n + 4
2 n + 5
2 n + 6
2 n + 7
2 n + 8
2 n + 9 2 n + 8
Appendix A Descriptors
Address
CPU
Mode
2, 3
2 n + 1
2 n
2 n + 3
2 n + 2
2 n + 5
2 n + 4
2 n + 7
2 n + 6
2 n + 9
Remarks
Status Configuration (transmission)
23
Bit
7
6
5
4
3
2
1
0
BPB
B
15
15
Function
EOM
Not used
Not used
Not used
Not used
Not used
Not used
EOT
16 15
CPH
DLH
H
H
Rev. 0, 07/98, page 395 of 453
BPH
8 7
8 7
H
Status Configuration (reception)
Bit
7
6
5
4
3
2
1
0
CPL
DLL
8 7
L
L
Function
EOM
Short frame
Abort
Residual bit
Overrun
CRC
Not used
Not used
BPL
0
0
L
0