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Serial port control and status registers
632
NS9750 Hardware Reference
Serial Channel B/A/C/D Receive Character GAP Timer
Address: 9020 0018 / 0058
9030 0018 / 0058
The receive character GAP timer closes out a receive serial data buffer due to a gap
between characters. This timer is configured to provide an interval in the range of
0.27us to 0.28S. The timer is reset when a character is received. When the timer
reaches its programmed threshold, the receive data buffer is closed.
Register bit assignment
Bits Access Mnemonic Reset Description
D31 R/W TRUN 0x0 Character GAP timer enable
0 Disables the timer
1 Enables the timer
D30:20 R/W Not used 0x000 Must be written as 0.
Table 375: Serial Channel B/A/C/D Receive Character GAP Timer
13121110987654321015 14
31 29 28 27 26 25 24 23 22 21 20 19 18 17 1630
Not used
Character GAP timer (CT)
TRUN Character GAP timer (CT)