ST802RT1BFR STMicroelectronics, ST802RT1BFR Datasheet - Page 31

• Manufacturer Part Number: ST802RT1BFR
• Description: TXRX ETH 10/100 REAL TIME 48LQFP
• Manufacturer: STMicroelectronics
• Type: Transceiverr

Specifications of ST802RT1BFR

• Number Of Drivers/receivers: 1/1
• Protocol: Ethernet
• Voltage - Supply: 3.15 V ~ 3.45 V
• Mounting Type: Surface Mount
• Package / Case: 48-LQFP
• Operating Supply Voltage: 3.3 V
• Supply Current: 4.5 mA
• Operating Temperature Range: - 40 C to + 105 C
• Mounting Style: SMD/SMT
• Power Dissipation Pd: 315 mW
• Lead Free Status / RoHS Status: Lead free / RoHS Compliant
• Other names: 497-10431

ST802RT1A, ST802RT1B
Table 24.
Table 25.
10:8
13:8
Bit
Bit
7:5
3:0
15
14
13
12
11
15
14
4
negotiation ability
Jabber disable
Auto-Negotiation
Auto-negotiation
Auto-negotiation
Auto-negotiation
Auto-negotiation
MDIO Power
RESERVED
RESERVED
RESERVED
RESERVED
Bit name
Saving
Bit name
complete
LP auto-
RN18 [0d24, 0x18]: Auxiliary control register
Jabber disable: 10BASE-T operation only. Bit 15 of the auxiliary control register allows the
user to disable the jabber detect function, defined in the IEEE standard. This function shuts
off the transmitter when a transmission request has exceeded a maximum time limit. By
writing a “1” to bit 15 of the auxiliary control register, the jabber detect function is disabled.
Writing a “0” to this bit or resetting the chip restores normal operation. Reading this bit
returns the value of jabber detect disable.
MDIO power saving: to reduce power consumption set this bit to '1'
RN19 [0d25, 0x19]: Auxiliary status register
detect
pause
HCD
ack
1 -> Disables jabber detection (10BaseT)
0 -> Normal operation
--
--
--
1 -> Stops MDC clock when MDIO interface is idle
0 -> Normal operation
--
1 -> Auto-negotiation process completed
0 -> Auto-negotiation process not completed
Active only if auto-negotiation is enabled, else 0.
Same as RN01[5]
1 -> Auto-negotiation completed ack state
0 -> Auto-negotiation did not complete ack state
1 -> Auto-negotiation entered ack state (ack match completed)
0 -> Acknowledge match not completed
1 -> Auto-negotiation in ability detect state
0 -> Auto-negotiation not in ability detect state
1 -> Pause is enabled
0 -> Pause is disabled
Pause is active only after auto-negotiation completion, if both
devices support symmetric pause (RN04[10], RN05[10])
Auto-negotiation highest common denominator:
000 -> No common denominator
001 -> 10Base-T half-duplex
010 -> 10Base-T full-duplex
011 -> 100Base-TX half-duplex
101 -> 100Base-TX full-duplex
Doc ID 17049 Rev 1
Description
Description
Registers and descriptors description
000000b
Default
0111b
001b
0
0
0
Default
000b
0
0
0
0
0
Type
RW
RW
RW
RW
RW
RO
RO
Type
RW
RO
RO
RO
RO
RO
RO
Type
Type
31/58
P
LH
LH
LH
-
-
-
-
-
-
-
-