HD64570 HITACHI [Hitachi Semiconductor], HD64570 Datasheet - Page 419

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

Register
MSCI (Channel 0)
MSCI TX/RX Buffer
Register L Channel 0:
TRBL Channel 0
MSCI TX/RX Buffer
Register H Channel 0:
TRBH Channel 0
MSCI Status Register 0
Channel 0: ST0 Channel 0
CPU
Mode
0, 1
20H
21H
22H
Address
CPU
Mode
2, 3
21H
20H
23H
Remarks
Async
Byte sync
Bit sync HDLC
Read/Write
Initial value
Async
Byte sync
Bit sync HDLC
Read/Write
Initial value
Async
Byte sync
Bit sync HDLC
Read/Write
Initial value
TXINT interrupt
0: No interrupt
1: Interruput
(TRBH7)
TXINT
(TRBL7)
TRB15
TRB7
R/W
R/W
R
7
0
RXINT interrupt
0: No interrupt
1: Interruput
X
Value written to, or read from, the transmit/receive buffer
X
Value written to, or read from, the transmit/receive buffer
7
7
RXINT
(TRBH6)
(TRBL6)
TRB14
R
TRB6
R/W
R/W
6
0
X
X
6
6
(TRBL5)
(TRBH5)
—
—
TRB13
5
0
TRB5
R/W
R/W
X
X
5
5
Rev. 0, 07/98, page 403 of 453
TX ready
0: Transmit buffer satisfying
1: Transmit buffer satisfying
—
—
(TRBH4)
(TRBL4)
the conditions set by TRC1
the conditions set by TRC0
4
0
TRB12
TRB4
R/W
R/W
4
X
4
X
—
—
(TRBH3)
(TRBL3)
3
0
TRB11
R/W
R/W
TRB3
X
X
3
3
RX ready
0: Receive buffer empty
1: Receive buffer satisfying
—
the conditions set by RRC
—
(TRBH2)
2
0
(TRBL2)
TRB10
TRB2
R/W
R/W
2
X
2
X
TXRDY
R
1
0
(TRBH1)
(TRBL1)
TRB1
R/W
TRB9
R/W
X
X
1
1
RXRDY
R
0
0
(TRBH0
(TRBL0)
TRB0
R/W
TRB8
R/W
0
X
0
X