Rainbow Electronics DS21458 - Manual (Page 151)

DS21455/DS21458 Quad T1/E1/J1 Transceivers
151 of 270
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