PM8610-BIAP PMC [PMC-Sierra, Inc], PM8610-BIAP Datasheet - Page 223

• Manufacturer Part Number: PM8610-BIAP
• Description: SBS Telecom Standard Product Data Sheet Preliminary
• Manufacturer: PMC [PMC-Sierra, Inc]

Proprietary and Confidential to PMC-Sierra, Inc., and for its Customers’ Internal Use
Document ID: PMC-2000168, Issue 3
RX_TIMEOUT_VAL[1:0]
00
01
10
11
RX_TIMEOUTE
RX_THRESHOLD_VAL[2:0]
RX_TIMEOUT_VAL[1:0]
Writing a logic one to the RX_TIMEOUTE bit enables the generation of an interrupt when
RX_TIMEOUTI is a logic one.
Variable Threshold dictates the minimum number of messages required to be in the RXFIFO
before an interrupt is generated. ‘000’ = 1 message ‘111’ = 8 messages.
These bits specify a variable delay, relative to a read from the receive message FIFO, in steps
of 125 us, before an interrupt is generated, if the Receive FIFO level is greater than 0. The
objective is to stop stale messages collecting in the RXFIFO.
RX_THRESHOLD_VAL[2:0]
000
001
010
011
100
101
110
111
Nominal
Delay In
Frames
1
2
3
4
Minimum
Delay from
Message
Reception
152 µs
277 µ s
402 µ s
527 µ s
Messages
1
2
3
4
5
6
7
8
Maximum
Delay from
Message
Reception
222 µ s
347 µ s
472 µ s
597 µ s
SBS Telecom Standard Product Data Sheet
Minimum
Delay from
FIFO read
125 µ s
250 µ s
375 µ s
500 µ s
Maximum
Delay from
FIFO read
250 µ s
375 µ s
500 µ s
625 µ s
Preliminary
223