User Manual

AT75C220
94
USART Transmitter Time-guard Register
Name: US_TTGR
Access Type:Read/write
Reset Value: 0x0
• TG: Time-guard Value
Time-guard duration = TG x Bit period
USART Receive Pointer Register
Name: US_RPR
Access Type:Read/write
Reset Value: 0x0
• RXPTR: Receive Pointer
RXPTR must be loaded with the address of the receive buffer.
31 30 29 28 27 26 25 24
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23 22 21 20 19 18 17 16
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15 14 13 12 11 10 9 8
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76543210
TG
TG Effect
0
Disables the TX time-guard function.
1 - 255
TXD is inactive high after the transmission of
each character for the time-guard duration.
31 30 29 28 27 26 25 24
RXPTR
23 22 21 20 19 18 17 16
RXPTR
15 14 13 12 11 10 9 8
RXPTR
76543210
RXPTR