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AM5706, AM5708
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SPRS961B –AUGUST 2016–REVISED SEPTEMBER 2017
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SpecificationsCopyright © 2016–2017, Texas Instruments Incorporated
Table 5-102. Manual Functions Mapping for GMAC RMII1
BALL BALL NAME GMAC_RMII1_MANUAL1 CFG REGISTER MUXMODE
A_DELAY
(ps)
G_DELAY
(ps)
0 2
P5 RMII_MHZ_50_CLK 0 0 CFG_RMII_MHZ_50_CLK_IN RMII_MHZ_50_CLK
T5 rgmii0_txctl 2450 909 CFG_RGMII0_TXCTL_IN rmii1_rxd0
T4 rgmii0_txc 2327 926 CFG_RGMII0_TXC_IN rmii1_rxd1
N6 uart3_txd 2553 443 CFG_UART3_TXD_IN rmii1_rxer
N5 uart3_rxd 1943 1110 CFG_UART3_RXD_IN rmii1_crs
5.9.6.19.4 GMAC RGMII Timings
CAUTION
The I/O Timings provided in this section are valid only for some GMAC usage
modes when the corresponding Virtual I/O Timings or Manual I/O Timings are
configured as described in the tables found in this section.
Table 5-103, Table 5-104 and Figure 5-71 present timing requirements for receive RGMIIn operation.
Table 5-103. Timing Requirements for rgmiin_rxc - RGMIIn Operation
NO. PARAMETER DESCRIPTION SPEED MIN MAX UNIT
1 t
c(RXC)
Cycle time, rgmiin_rxc 10 Mbps 360 440 ns
100 Mbps 36 44 ns
1000 Mbps 7.2 8.8 ns
2 t
w(RXCH)
Pulse duration, rgmiin_rxc high 10 Mbps 160 240 ns
100 Mbps 16 24 ns
1000 Mbps 3.6 4.4 ns
3 t
w(RXCL)
Pulse duration, rgmiin_rxc low 10 Mbps 160 240 ns
100 Mbps 16 24 ns
1000 Mbps 3.6 4.4 ns
4 t
t(RXC)
Transition time, rgmiin_rxc 10 Mbps 0.75 ns
100 Mbps 0.75 ns
1000 Mbps 0.75 ns
Table 5-104. Timing Requirements for GMAC RGMIIn Input Receive for 10/100/1000 Mbps
(1)
NO. PARAMETER DESCRIPTION MODE MIN MAX UNIT
5 t
su(RXD-RXCH)
Setup time, receive selected signals valid before
rgmiin_rxc high/low
RGMII0/1 1 ns
6 t
h(RXCH-RXD)
Hold time, receive selected signals valid after
rgmiin_rxc high/low
RGMII0/1 1 ns