78Q2123R/F1 Maxim Integrated, 78Q2123R/F1 Datasheet - Page 20

• Manufacturer Part Number: 78Q2123R/F1
• Description: Ethernet ICs
• Manufacturer: Maxim Integrated

Specifications of 78Q2123R/F1

• Rohs: yes

78Q2123/78Q2133 Data Sheet
3.9
The Interrupt Control/Status Register provides the means for controlling and observing the events, which
trigger an interrupt on the INTR pin. This register can also be used in a polling mode via the MII Serial
Interface as a means to observe key events within the PHY via one register address. Bits 0 through 7 are
status bits, which are each set to logic one based upon an event. These bits are cleared after the register
is read. Bits 8 through 15 of this register, when set to logic one, enable their corresponding bit in the
lower byte to signal an interrupt on the INTR pin. The assertion level of this interrupt signal output on the
INTR pin can be set via the MR16.14 (INPOL) bit.
20
17.15
17.14
17.13
17.12
17.11
17.10
17.9
17.8
17.7
17.6
17.5
17.4
17.3
17.2
17.1
17.0
Bit
MR17: Interrupt Control/Status Register
RFAULT_INT
LS-CHG_INT
LP-ACK_INT
JABBER_IE
RFAULT_IE
LS-CHG_IE
COMP_INT
LP-ACK_IE
RXER_INT
COMP_IE
RXER_IE
PRX_INT
PDF_INT
JAB_INT
Symbol
PRX_IE
PDF_IE
ANEG-
ANEG-
Type
R/W
R/W
R/W
R/W
R/W
R/W
R/W
R/W
RC
RC
RC
RC
RC
RC
RC
RC
Default
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
Description
Jabber Interrupt Enable
Receive Error Interrupt Enable
Page Received Interrupt Enable
Parallel Detect Fault Interrupt Enable
Link Partner Acknowledge Interrupt Enable
Link Status Change Interrupt Enable
Remote Fault Interrupt Enable
Auto-Negotiation Complete Interrupt Enable
Jabber Interrupt: This bit is set high when a Jabber
event is detected by the 10Base-T circuitry.
Receive Error Interrupt: This bit is set high when the
RX_ER signal transitions high.
Page Received Interrupt: This bit is set high when a new
page has been received from the link partner during
auto-negotiation.
Parallel Detect Fault Interrupt: This bit is set high by the
auto-negotiation logic when a parallel detect fault
condition is indicated.
Link Partner Acknowledge Interrupt: This bit is set high
by the auto-negotiation logic when FLP bursts are
received with the acknowledge bit set.
Link Status Change Interrupt: This bit is set when the
link transitions from an OK status to a FAIL status.
Remote Fault Interrupt: This bit is set when a remote
fault condition has been indicated by the link partner.
Auto-Negotiation Complete Interrupt: This bit is set by
the auto-negotiation logic upon successful completion of
auto-negotiation.
DS_21x3_001
Rev. 1.6