HD64570 HITACHI [Hitachi Semiconductor], HD64570 Datasheet - Page 174

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

5.2.18
Synchronous/address register 0 (SA0) specifies the SYN character pattern for reception in byte
synchronous mono-sync mode, the low-order eight bits of the SYN character pattern for
transmission and reception in byte synchronous bi-sync mode, and the secondary station address in
bit synchronous mode. This register is not used in asynchronous or byte synchronous external-
sync mode.
Rev. 0, 07/98, page 158 of 453
Async
Byte sync
Bit sync HDLC
Read/Write
Initial/value
Note: This register is not used in asynchronous mode.
MSCI Synchronous/Address Register 0 (SA0)
• Byte synchronous mode
• Bit synchronous mode
Mono-sync
Bi-sync
External-sync
HDLC
mode
R/W
SA07
—
7
1
No address field checked
Single address 1
Single address 2
Dual address
SYN pattern for reception/address field check
R/W
SA06 SA05 SA04 SA03 SA02 SA01 SA00
—
6
1
SYN pattern for reception
SYN pattern for transmission and reception (bits 7–0)
Not used
R/W
—
5
1
—
R/W
4
1
—
R/W
Not used
Bits 7–0 of the secondary station address
Not used
Bits 7–0 of the secondary station address
3
1
—
R/W
2
1
—
R/W
1
1
—
R/W
0
1