HD64570 HITACHI [Hitachi Semiconductor], HD64570 Datasheet - Page 420

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

Register
MSCI (Channel 0)
MSCI Status Register 1
Channel 0: ST1 Channel 0
Rev. 0, 07/98, page 404 of 453
CPU
Mode
0, 1
23H
Address
CPU
Mode
2, 3
22H
Underrun error
•
0:
1:
Remarks
Byte/Bit synchronous mode
Async
Byte sync
Bit sync HDLC
Read/Write
Initial value
No underrun detected
Underrun detected
Transmitter idle status
0: Not idle
1: Idle
2 clock missing detection
•
0:
1:
Byte/Bit synchronous mode
No 2 clock missing detected
2 clock missing detected
UDRN
SYN pattern detection
• Byte synchronous mode
0: No pattern detected
1: Pattern detected
Flag detection
• Bit synchronous mode
0: No flag detected
1: Flag detected
R/W
—
7
0
IDL
R
CTS line
level change
0: Not changed
1: Changed
6
0
CLMD
R/W
—
5
0
SYNCD
FLGD
R/W
—
4
0
DCD line
level change
0: Not changed
1: Changed
Abort detection
• Bit synchronous mode
0: Abort sequence start not
1: Abort sequence start
Break end
• Asynchronous mode
0: Break sequence end not detected
1: Break sequence end detected
Break detection
• Asynchronous mode
0: Break sequence
1: Break sequence
Idle start detection
• Bit synchronous mode
0: Idle sequence start not detected
1: Idle sequence start detected
CCTS
R/W
detected
detected
starts not detected
starts detected
3
0
CDCD
R/W
2
0
BRKD
ABTD
R/W
—
1
0
BRKE
IDLD
R/W
—
0
0