HD64570 HITACHI [Hitachi Semiconductor], HD64570 Datasheet - Page 433

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

Register
MSCI (Channel 1)
MSCI Status Register 2
Channel 1: ST2 Channel 1
SCI Status Register 3
Channel 1: ST3 Channel 1
CPU
Mode
0, 1
44H
45H
Address
CPU
Mode
2, 3
45H
44H
Remarks
Async
Byte sync
Bit sync HDLC
Read/Write
Initial value
Receive end of message
• Bit synchronous mode
0:
1:
Async
Byte sync
Bit sync HDLC
Read/Write
Initial value
Receive frame end
not detected
Receive frame end
detected
Parity/MP bit
• Asynchronous mode
0:
1:
Short frame
• Bit synchronous mode
0:
1:
Parity error
• Asynchronous mode
0: No parity error detected
1: Parity error detected
Abort end frame
• Bit synchronous mode
0: Normal end of frame
1: Frame with abort end detected
Sending on loop
• Bit synchronous mode
0: Transmits no MSCI data
1: Transmits MSCI data
Parity/MP bit = 0
Parity/MP bit = 1
Normal end of frame
Short frame detected
R/W
EOM
—
7
0
—
—
7
0
SHRT
R/W
PMP
—
6
0
—
—
6
0
Search mode
• Byte/Bit synchronous mode
0: ADPLL normal mode
1: ADPLL search mode
R/W
SLOOP
ABT
PE
—
5
0
—
R
5
0
Framning error
• Asynchronous mode
0:
1:
Residual bit frame
•
0:
1:
Rev. 0, 07/98, page 417 of 453
Bit synchronous
mode
CTS input line status
0: CTS low level
1: CTS high level
Overrun error
0: No overrun error detected
1: Overrun error detected
No framing error
detected
Framing error
detected
Normal end of
frame
Residual bit frame
detected
FRME
R/W
RBIT
SRCH
—
4
0
—
R
4
0
OVRN
R/W
CTS
3
0
R
X
3
DCD input line status
0: DCD low level
1: DCD high level
CRC error
• Byte/Bit synchronous mode
0: No CRC error detected
1: CRC error detected
CRCE
R/W
—
DCD TXENBL R XENBL
2
0
R
2
X
TX enable
0: Disable
1: Enable
—
—
1
0
R
1
0
RX enable
0: Disable
1: Enable
—
—
0
0
R
0
0