Figure 121. write register 7, Table 48, Write register 6 transmit sync – Zilog Z08470 User Manual
Page 311: Table 49, Write register 7 receive sync, Write register 7
Z80 CPU Peripherals
User Manual
UM008101-0601
Serial Input/Output
291
Write Register 7
This register is programmed to contain the receive sync character in the
Monosync mode, a second byte (last eight bits) of a 16-bit sync character in
the Bisync mode, or a flag character (0111 1110) in the SDLC mode. WR7
is not used in the External Sync mode.
Figure 121. Write Register 7
Table 29. Write Register 6 Transmit Sync
D7
D6
D5
D4
D3
D2
D1
D0
Sync 7
Sync 6
Sync 5
Sync 4
Sync 3
Sync 2
Sync 1
Sync 0
Table 30. Write Register 7 Receive Sync
D7
D6
D5
D4
D3
D2
D1
&
Sync 15 Sync 14 Sync 13 Sync 12 Sync 11 Sync 10 Sync 9
Sync 8
SYNC Bit 8
SYNC Bit 9
SYNC Bit 10
SYNC Bit 11
D7
D6
D5
D4
D3
D2
D1
D0
*
SYNC Bit 12
SYNC Bit 13
SYNC Bit 14
SYNC Bit 15
*For SDLC it must be programmed to ‘0111 1110’ for flag recognition