RTL8305SC
Datasheet
5-port 10/100Mbps Single-Chip Dual MII Switch Controller
59
Track ID: JATR-1076-21 Rev. 1.2
Reg.bit
Name
Mode Description
Default
18.6
Enable defer
RW
1: Enable carrier sense deferring for half duplex back pressure
0: Disable carrier sense deferring for half duplex back pressure
Pin EnDefer
strap option
Default=1
18.5
LED blink time
RW
1: On for 43ms, then Off for 43ms
0: On for 120ms, then Off for 120ms
Pin
LED_BLNK_
TIME strap
option
Default=1
18.[4:3]
Queue weight
RW
The frame service ratio between the high priority queue and
low priority queue is:
11=16:1
10=Always high priority queue first
01=8:1
00=4:1
Pin
QWeight[1:0]
strap option
Default=11
18.2
Disable broadcast
storm control
RW
1: Disable Broadcast Storm Control
0: Enable Broadcast Storm Control
Pin
DisBrdCtrl
strap option
Default=1
18.1
Enable power-on
blinking
RW
1: Enable power-on LED blinking for diagnosis
0: Disable power-on LED blinking for diagnosis
Pin
En_Rst_Blnk
strap option
Default=1
18.0
Reserved
1
7.1.10. PHY 0 Register 19: Global Control 3
Table 69. PHY 0 Register 19: Global Control 3
Reg.bit
Name
Mode Description
Default
19.[15:14
]
Reserved
11
19.[13:12
]
LED Mode[1:0]
RW
11=Mode 3: Speed, Link+Act, Duplex+Col, Link/Act/Speed
10=Mode 2: Speed, Act, Duplex/Col, Bi-color Link/Activity
01=Mode 1: Speed, RxAct, TxAct, Link
00=Mode 0: Reserved
Pin
LEDMode[1:0]
strap option
Default=11
19.11
Internal Use
RW
Default=1
19.10
Disable dual MII
interface of
Port 4
RW
1: Disable dual MII interface of port 4. Only provides MII
interface for the MAC circuit of port 4
0: Enable dual MII interface of port 4. Provides MII interface
for the MAC circuit of port 4, and also provides MII interface
for the PHY circuit of port 4
Pin
DISDUALMII
strap option
Default=1
19.[9:0]
Reserved
11 1111 1111
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