HD64570 Datasheet, PDF (426/469 Pages) Hitachi Semiconductor – Serial Communications Adaptor

Register
MSCI (Channel 0)
MSCI Mode Register 1
Channel 0: MD1
Channel 0
MSCI Mode Register 2
Channel 0: MD2
Channel 0
Address
CPU CPU
Mode Mode
0, 1 2, 3 Remarks
2FH 2EH
Async
Byte sync
7
6
5
4
3
2
1
0
BRATE1BRATE0TXCHR1TXCHRR0 XCHRR1XCHR0PMPM1PMPM0
—————— ——
Bit sync HDLC ADDRSA1DDRS0
Read/Write R/W R/W R/W R/W R/W R/W R/W R/W
Initial value
0
0
0
0
0
0
0
0
Bit rate
• Asynchronous mode
00: 1/1 clock rate
01: 1/16 clock rate
10: 1/32 clock rate
11: 1/64 clock rate
Address field check
• Bit synchronous mode
00: Address field no-check
01: Single address 1
10: Single address 2
11: Dual address
Transmit character
length
• Asynchronous mode
00: 8 bits/character
01: 7 bits/character
10: 6 bits/character
11: 5 bits/character
Recieve character
length
• Asynchronous mode
00: 8 bits/character
01: 7 bits/character
10: 6 bits/character
11: 5 bits/character
Parity/multiprocessor
mode
• Asynchronous mode
00: No parity/MP bit
01: MP bit appended
(by command)
10: Even parity appended
and checked
11: Odd parity appended
and checked
30H 31H
Async
7
6
5
4
3
2
— ——— ——
Byte sync NRZFMCODE1CODE0DRATE1DRATE0
Bit sync HDLC
Read/Write R/W R/W R/W R/W R/W —
Initial value
0
0
0
0
0
0
1
0
CNCT1CNCT0
R/W R/W
0
0
NRZ or FM select
• Byte/Bit
synchronous _{Transmission code}
mode
type
0: NRZ
• Byte/Bit synchronous
1: FM
mode
Channel connection
00: Full duplex
communications
01: Auto echo
10: Reserved
• NRZ
11: Local loop back
00: NRZ
01: NRZI
10: Reserved
11: Reserved
• FM
00: Manchester
01: FM1
10: FM0
ADPLL operating clock/bit rate
• Byte/Bit synchronous mode
00: x 8
01: x 16
10: x 32
11: Reserved
11: Reserved
Rev. 0, 07/98, page 410 of 453