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AM5706, AM5708
SPRS961B –AUGUST 2016–REVISED SEPTEMBER 2017
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Specifications Copyright © 2016–2017, Texas Instruments Incorporated
In Table 5-100 are presented the specific groupings of signals (IOSET) for use with GMAC RMII signals.
Table 5-100. GMAC RMII IOSETs
SIGNALS IOSET1 IOSET2
BALL MUX BALL MUX
GMAC RMII1
RMII_MHZ_50_CLK P5 0
rmii1_txd1 P2 2
rmii1_txd0 N1 2
rmii1_rxd1 T4 2
rmii1_rxd0 T5 2
rmii1_rxer N6 2
rmii1_txen N2 2
rmii1_crs N5 2
GMAC RMII0
RMII_MHZ_50_CLK P5 0
rmii0_txd1 N3 1
rmii0_txd0 N4 1
rmii0_rxd1 R2 1
rmii0_rxd0 R1 1
rmii0_txen P1 1
rmii0_rxer P3 1
rmii0_crs P4 1
Manual IO Timings Modes must be used to guaranteed some IO timings for GMAC. See Table 5-29
Modes Summary for a list of IO timings requiring the use of Manual IO Timings Modes. See Table 5-101
Manual Functions Mapping for GMAC RMII0 for a definition of the Manual modes.
Table 5-101 lists the A_DELAY and G_DELAY values needed to calculate the correct values to be set in
the CFG_x registers.
Table 5-101. Manual Functions Mapping for GMAC RMII0
BALL BALL NAME GMAC_RMII0_MANUAL1 CFG REGISTER MUXMODE
A_DELAY
(ps)
G_DELAY
(ps)
0 1
P5 RMII_MHZ_50_CLK 0 0 CFG_RMII_MHZ_50_CLK_IN RMII_MHZ_50_CLK
R1 rgmii0_txd0 2444 804 CFG_RGMII0_TXD0_IN rmii0_rxd0
R2 rgmii0_txd1 2453 981 CFG_RGMII0_TXD1_IN rmii0_rxd1
P3 rgmii0_txd2 2356 847 CFG_RGMII0_TXD2_IN rmii0_rxer
P4 rgmii0_txd3 2415 993 CFG_RGMII0_TXD3_IN rmii0_crs
Manual IO Timings Modes must be used to guaranteed some IO timings for GMAC. See Table 5-29
Modes Summary for a list of IO timings requiring the use of Manual IO Timings Modes. See Table 5-102
Manual Functions Mapping for GMAC RMII1 for a definition of the Manual modes.
Table 5-102 list the A_DELAY and G_DELAY values needed to calculate the correct values to be set in
the CFG_x registers.