HD64570 Datasheet, PDF (430/469 Pages) Hitachi Semiconductor – Serial Communications Adaptor

Register
MSCI (Channel 0)
MSCI TX Ready Control
Register 1 Channel 0:
TRC1 Channel 0
Address
CPU CPU
Mode Mode
0, 1 2, 3 Remarks
39H 38H
7
6
5
4
3
2
1
0
Async
— — — TRC14 TRC13 TRC12 TRC11 TRC10
Byte sync
Bit sync HDLC
Read/Write
—
—
— R/W R/W R/W R/W R/W
Initial value
0
0
0
1
1
1
1
1
MSCI RX Ready Control
Register Channel 0:
RRC Channel 0
3AH 3BH
TX ready control 1
7
6
5
4
3
2
1
0
Async
— — — RRC4 RRC3 RRC2 RRC1 RRC0
Byte sync
Bit sync HDLC
Read/Write
—
—
— R/W R/W R/W R/W R/W
Initial value
0
0
0
0
0
0
0
0
Not used
MSCI RX Ready Control
Register Channel 0:
RRC Channel 0
3BH 3AH
3CH 3DH
RX ready control
Async
Byte sync
7
6
5
4
3
2
1
— PMPC0 PEC0 FRMEC0OVRNC0 —
—
———
CRCEC0
Bit sync HDLC EOMC0SHRTC0ABTC0 RBITC0
Read/Write
R
R
R
R
R
R—
Initial value
0
0
0
0
0
0
0
0
CDE0
R
0
MSCI Current Status
Register 1 Channel 0:
CST1 Channel 0
3DH 3CH
Data status in the top stage of the receive buffer
Current data 0
0: No data exists
1: Data exists
Async
Byte sync
7
6
5
4
3
2
1
— _{PMPC1 PEC1 FRMEC1OVRNC1} —
—
———
CRCEC1
Bit sync HDLC EOMC1SHRTC1ABTC1 RBITC1
Read/Write
R
R
R
R
R
R
–
Initial value
0
0
0
0
0
0
0
0
CDE1
R
0
Not used
Not used
3EH 3FH
3FH 3EH
Data status in the second stage of the receive buffer
Current data 1
0: No data exists
1: Data exists
Rev. 0, 07/98, page 414 of 453