Datasheet

DS2155
136 of 238
Register Name:
IMR6, IMR7
Register Description:
HDLC # 1 Interrupt Mask Register 6
HDLC # 2 Interrupt Mask Register 7
Register Address:
21h, 23h
Bit # 7 6 5 4 3 2 1 0
Name — TMEND RPE RPS RHWM RNE TLWM TNF
Default 0 0 0 0 0 0 0 0
Bit 0/Transmit FIFO Not Full Condition (TNF)
0 = interrupt masked
1 = interrupt enabled—interrupts on rising edge only
Bit 1/Transmit FIFO Below Low-Watermark Condition (TLWM)
0 = interrupt masked
1 = interrupt enabled—interrupts on rising edge only
Bit 2/Receive FIFO Not Empty Condition (RNE)
0 = interrupt masked
1 = interrupt enabled—interrupts on rising edge only
Bit 3/Receive FIFO Above High-Watermark Condition (RHWM)
0 = interrupt masked
1 = interrupt enabled—interrupts on rising edge only
Bit 4/Receive Packet-Start Event (RPS)
0 = interrupt masked
1 = interrupt enabled
Bit 5/Receive Packet-End Event (RPE)
0 = interrupt masked
1 = interrupt enabled
Bit 6/Transmit Message-End Event (TMEND)
0 = interrupt masked
1 = interrupt enabled