XRT86VL30 datasheet(84/188 Pages) EXAR

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XRT86VL30

SINGLE T1/E1/J1 FRAMER/LIU COMBO - E1 REGISTER DESCRIPTION

REV. 1.0.0

BIT 7 - BOC Source Select

This bit is used to select the source and destination of the BOC message. By default, the BOC will use the National Bits.

To use the Si International Bit, set this bit to ’1’. When a BOC message is enabled, it takes priority over the normal SaN

transmission. In addition, only one SaN register bit can be enabled at one time when transmitting BOC messages.

} 0 - Sa National Bits (Only one of the five Sa bits can be chosen for SSM transmission at a time, see register 0x010Ah)

} 1 - Si International Bits

BITS [6:5] - Receive Match Filter Bits

These bits are used to set the number of consecutive error free patterns that must be received before the receive Match

Event is set. This filter applies to all three Match Event alarms, but not for the RSSM alarm.

} 00 - None

} 01 - 3 consecutive patterns

} 10 - 5 consecutive patterns

} 11 - 7 consecutive patterns

BIT 4 - Receive BOC Enable

This bit is used to enable the BOC receiver. For clarification, BOC messages can only be processed through the

National bits or Si International bit.

} 0 - Disabled

} 1 - Enable Receive BOC

BIT 3 - BOC Reset

This bit is used to reset the receive BOC controller. The function of this bit is to reset all the BOC register values to their

default values, except the BOC Interrupt registers. This register bit is automatically set back to ’0’ so that the user only

needs to write ’1’ to send a subsequent reset.

} 1 - Reset BOC

BITS [2:1] -Receive BOC Filter Bits

These bits are used to set the number of consecutive error free patterns that must be received before the receive BOC

alarm indication is set and the RSSM Valid Register is updated. This filter does NOT apply to the RSSM Matching Event

registers. The 3 RSSM Matching Event Registers have a separate filter that applies equally to all three matching

registers. Therefore, there are a total of 2 filters.

} 00 - None

} 01 - 3 consecutive patterns

} 10 - 5 consecutive patterns

} 11 - 7 consecutive patterns

BIT 0 - Send BOC Message

This bit is used to transmit the stored BOC message in the transmit SSM register. This register bit is automatically set

back to ’0’ so that the user only needs to write ’1’ to send a subsequent BOC message.

} 0 - Normal Operation

} 1 - Send BOC Message

TABLE 63: SSM BOC CONTROL REGISTER (BOCCR 0X0170H)

BIT7

BIT6

BIT5

BIT4

BIT3

BIT2

BIT1

BIT0

BOCSource

RMF[1:0]

RBOCE

BOCR

RBF[1:0]

SBOC

R/W

Auto Clear

R/W

Auto Clear

XRT86VL30 Datasheet(PDF) 84 Page - Exar Corporation

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