xr82c684 Exar Corporation, xr82c684 Datasheet - Page 23

• Manufacturer Part Number: xr82c684
• Description: Cmos Quad Channel Uart Quart
• Manufacturer: Exar Corporation


Please note that in order to enable this Interrupt
Condition, the user must do two things:
1. Write the appropriate data to the lower nibble of the
2. Write a logic “1” to IMR2[7].
ISR2[6] Delta Break Indicator - Channel D:
Section G.2
ISR2[5] RXRDY/FFULL D - Channel D Receiver
Ready or FIFO Full
Note: If this bit is configured to reflect the FFULLD
indicator, this bit will not be set (nor will produce an
interrupt request) if one or two characters are still
remaining in RHRD, following data reception. Hence, it is
Auxiliary Control Register, ACR2[3:0]. In this step, the
user is specifying which of the four Input Pins (IP8 -
IP11) should trigger an “Input Port Change” Interrupt
request.
Table 2
Section E
possible that the last two characters in a string of data
(being received) could be lost due to this phenomenon.
ISR2[4] TXRDYD - Channel D Transmitter Ready
ISR2[3] Counter # 2 Ready
ISR2[2]: Delta Break C - Channel C Change in
Break
ISR2[1] RXRDYA/FFULL C - Channel C Receiver
Ready or FIFO Full
XR82C684
Section G.2
Section D