HD64570 HITACHI [Hitachi Semiconductor], HD64570 Datasheet - Page 197

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

The timing of sampling receive data is shown in figures 5.16 (a) and (b). This example uses an
8-bit character and one stop bit, with parity.
Receive data
Sampling
Receive data
Sampl-
ing
Start bit search
Start bit search
P: Parity bit
Space detected
Start bit detected
Start bit check
Figure 5.16 Receive Data Sampling Timing
(b) 1/16, 1/32, or 1/64 Clock Mode
D
D
0
0
Character assembly
(a) 1/1 Clock Mode
Character assembly
D
1
D
7
D
P
6
Stop bit check
D
Rev. 0, 07/98, page 181 of 453
P: Parity bit
7
Stop bit check
P
Start bit search
Start bit search