HD64570 Datasheet, PDF (437/469 Pages) Hitachi Semiconductor – Serial Communications Adaptor

Address
Register
CPU CPU
Mode Mode
0, 1 2, 3
MSCI (Channel 1)
MSCI Command Register 4CH
Channel 1: CMD Channel 1
4DH
Remarks
7
Async
—*1
Byte sync
Bit sync HDLC
Read/Write
—
Initial value
—
6
5
4
3
2
1
0
—*1 CMD5 CMD4 CMD3 CMD2 CMD1 CMD0
—WWWWWW
———————
Not used
4DH 4CH
Command
• Transmit commands
000001: TX reset
000010: TX enable
000011: TX disable
000100: TX CRC initialization
000101: TX CRC calculation
exclusion
000110: End-of-message
000111: Abort transmission
001000: MP bit on
001001: TX buffer clear
Others: Reserved
• Receive commands
010001: RX reset
010010: RX enable
010011: RX disable
010100: RX CRC initialization
010101: Message reject
010110: Search MP bit
010111: RX CRC calculation
exclusion
011000: Forcing RX CRC
calculation
• Other commands
100001: Channel reset
110001: Enter search mode
000000: No operation
MSCI Mode Register 0
4EH 4FH
Channel 1: MD0 Channel 1
Rev. 0, 07/98, page 421 of 453