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LAN8804/ZMXC1 датащи(PDF) 53 Page - Microchip Technology

номер детали LAN8804/ZMXC1
подробное описание детали  4-Port Gigabit Ethernet Transceiver with QSGMII Support
PDF  91 Pages
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производитель  MICROCHIP [Microchip Technology]
домашняя страница  http://www.microchip.com
Logo MICROCHIP - Microchip Technology

LAN8804/ZMXC1 датащи(HTML) 53 Page - Microchip Technology

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LAN8804
© 2024 Microchip Technology Inc. and its subsidiaries
DS00003591G-page 53
5.18 Coma Mode
Coma mode is designed to hold the PHY in a suspended state until system initialization is complete. When enabled by
driving the
COMA_MODE pin high, all the errors, alarms, link up/down notifications, etc. are suppressed until COMA_-
MODE is driven low. This is useful in designs with multiple PHYs, as it allows all errors to be suppressed until the entire
board is configured. Coma mode operates as per Table 5-11.
Enhanced Mode 11
N/A
Reserved
Enhanced Mode 12
(Parallel Detect Fault)
Inactive
No parallel detect fault
Active
Parallel detect fault
Blinking
N/A
Enhanced Mode 13
N/A
Reserved
Enhanced Mode 14
(Force LED Off)
Inactive
LED off
Active
N/A
Blinking
N/A
Enhanced Mode 15
(Force LED On)
Inactive
N/A
Active
LED on
Blinking
N/A
TABLE 5-11: COMA MODE OPERATION
Chip Function
Coma Mode Active
Gigabit PHY Hard Macros
Gigabit PHYs held in disabled state (except configuration registers).
No data is sent to the line or MAC, no recovered clock, no interrupt/error/
etc. indications given to the system.
LEDs
LEDs inactive
Interrupt
Interrupts inactive
QSGMII PCS1G Block
No affect
QSGMII Extender
No affect
SerDes
No affect
System PLL
No affect
MDIO Functions
No affect
TABLE 5-10: EXTENDED MODE OPERATION (CONTINUED)
Mode
PORTxLEDy
Definition



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