Data Sheet

Ethernet Controller I210 — Programming Interface
574
8.27.3.29 jt_led_s[3:0] Polarity Control Register - Page 3, Register 17
8.27.3.30 LED Timer Control Register - Page 3, Register 18
Bits Field Mode HW Rst SW Rst Description
15:12
jt_led_s[5],
jt_led_s[3],
jt_led_s[1] Mix
Percentage
R/W 0x8 Retain
When using 2 terminal bi-color LEDs the mixing percentage should
not be set greater than 50%.
0000b = 0%.
0001b = 12.5%, . . ..
0111b = 87.5%.
1000b = 100%.
1001b to 1111b = Reserved.
11:8
jt_led_s[4],
jt_led_s[2],
jt_led_s[0] Mix
Percentage
R/W 0x8 Retain
When using 2 terminal bi-color LEDs the mixing percentage should
not be set greater than 50%.
0000b = 0%.
0001b = 12.5%, . . ..
0111b = 87.5%.
1000b = 100%.
1001b to 1111b = Reserved.
7:6
jt_led_s[3]
Polarity
R/W 0x0 Retain
00b = On - drive jt_led_s[3] low, off - drive jt_led_s[3] high.
01b = On - drive jt_led_s[3] high, off - drive jt_led_s[3] low.
10b = On - drive jt_led_s[3] low, off - tristate jt_led_s[3].
11b = On - drive jt_led_s[3] high, off - tristate jt_led_s[3].
5:4
jt_led_s[2]
Polarity
R/W 0x0 Retain
00b = On - drive jt_led_s[2] low, off - drive jt_led_s[2] high.
01b = On - drive jt_led_s[2] high, off - drive jt_led_s[2] low.
10b = On - drive jt_led_s[2] low, off - tristate jt_led_s[2].
11b = On - drive jt_led_s[2] high, off - tristate jt_led_s[2].
3:2
jt_led_s[1]
Polarity
R/W 0x0 Retain
00b = On - drive jt_led_s[1] low, off - drive jt_led_s[1] high.
01b = On - drive jt_led_s[1] high, off - drive jt_led_s[1] low.
10b = On - drive jt_led_s[1] low, off - tristate jt_led_s[1].
11b = On - drive jt_led_s[1] high, off - tristate jt_led_s[1].
1:0
jt_led_s[0]
Polarity
R/W 0x0 Retain
00b = On - drive jt_led_s[0] low, off - drive jt_led_s[0] high.
01b = On - drive jt_led_s[0] high, off - drive jt_led_s[0] low.
10b = On - drive jt_led_s[0] low, off - tristate jt_led_s[0].
11b = On - drive jt_led_s[0] high, off - tristate jt_led_s[0].
Bits Field Mode HW Rst SW Rst Description
15 Force INT R/W 0x0 Retain
1b = jt_int_out_s pin forced to be asserted.
0b = Normal operation.
14:12
Pulse Stretch
Duration
R/W 0x4 Retain
000b = no pulse stretching.
001b = 21 ms to 42 ms.
010b = 42 ms to 84 ms.
011b = 84 ms to 170 ms.
100b = 170 ms to 340 ms.
101b = 340 ms to 670 ms.
110b = 670 ms to 1.3 s.
111b = 1.3s to 2.7 s.
11 Interrupt Polarity R/W 0x1 Retain
0b = Interrupt active high.
1b = Interrupt active low.