S7600A datasheet(49/60 Pages) SII

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TCP/IP Network Stack LSI

S-7600A

Hardware Specification Revision 1.3

Seiko Instruments Inc.

7-22

Bit

Bit Name

Access

Description

PPP_UP/SRst

R/W

When read, this bit indicates when the PPP layer establishes a

connection.

0 = PPP Connection down

1 = PPP Connection established

When written, this bit will reset the PPP engine. It is self-clearing

and goes not need to be written low for normal operations.

0 = PPP Normal operation

1 = PPP Reset

7.3.32. PPP Interrupt Code (0x61)

(Read-Only, Default 0x00)

This register indicates the interrupt condition that causes the PPP interrupt to trigger.

Table 7-53

PPP Interrupt Code Register Bit Definitions

Bit

Def.

PPP Interrupt Code

Default

Table 7-54

PPP Interrupt Error Codes

Error Code

Definition

0x00

Reserved

0x01

PPP Failed initial LCP negotiations

0x02

PPP Failed NCP negotiations

0x05

PAP Failed negotiations

7.3.33. PPP Max Retry, (0x62)

(Read/Write, Default 0x0A)

This register configures the maximum retry number. This number is used to determine the maximum

number of configuration requests that are sent during the PPP negotiation stage.

Table 7-55

PPP Max Retry Register

Bit

Def.

PPP Maximum Retry

Default

0x0

0xA

NOTE: Reserved bits are signified by a dash (-).

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