TMS320C6421 datasheet(10/223 Pages) TI

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TMS320C6421

Fixed-Point Digital Signal Processor

SPRS346C – JANUARY 2007 – REVISED NOVEMBER 2007

SEE

ADDITIONS/MODIFICATIONS/DELETIONS

Section 6.15.3

Section 6.15.3.2, EMAC RMII Electrical Data/Timing:

Table 6-61, Updated/Changed title from "Timing Requirements for RMREFCLK - MII Operation" to

"Timing Requirements for RMREFCLK - RMII Operation"

Table 6-61, Timing Requirements for RMREFCLK - RMII Operation

Updated/Changed tc(RMREFCLK) MIN value from "TBD" to "20 ns"

Updated/Changed tt(RMREFCLK) MAX value from "TBD" to "2 ns"

Table 6-62, Timing Requirements for EMAC RMII Receive 10/100 Mbit/s:

Updated/Changed tsu(RMRXD-REFCLKH) MIN value from "TBD" to "4 ns"

Updated/Changed th(REFCLKH-RMRXD) MIN value from "TBD" to "2 ns"

Table 6-63, Switching Characteristics Over Recommended Operating Conditions for EMAC RMII Transmit

10/100 Mbit/s:

Updated/Changed td(REFCLKH-MTXD) MIN value from "TBD" to "2.2 ns"

Updated/Changed td(REFCLKH-MTXD) MAX value from "TBD" to "15.5 ns"

Section 6.19.2

Table 6-79, Switching Characteristics Over Recommended Operating Conditions for Transmit Data for the

VLYNQ Module:

Updated/Changed td(VCLKH-TXDV) MAX value from "8.5 ns" to "12 ns"

Table 6-80, Timing Requirements for Receive Data for the VLYNQ Module:

Updated/Changed th(VCLKH-RXDV) MIN value from "2 ns" to "3ns"

Table 6-81, RTM RX Data Flop Hold/Setup Timing Constraints:

Added "Typical Values" to title

Updated/Changed HOLD (Y) and SETUP (X) values as follows:

RX Data Flop 0: HOLD (Y) from "0.6" to "1.3"; SETUP (X) from "2.5" to "0.9"

RX Data Flop 1:SETUP (X) from "2.25" to "0.7"

RX Data Flop 2: HOLD (Y) from "1.9" to "1.5"; SETUP (X) from "2" to "-0.4"

RX Data Flop 3: HOLD (Y) from "2" to "1.6"; SETUP (X) from "1.75" to "-0.6"

RX Data Flop 4: HOLD (Y) from "2.5" to "1.8"; SETUP (X) from "1.5" to "-0.8"

RX Data Flop 5: HOLD (Y) from "3" to "2.0"; SETUP (X) from "1.25" to "-1.0"

RX Data Flop 6: HOLD (Y) from "3.5" to "2.2"; SETUP (X) from "1" to "-1.1"

RX Data Flop 7: HOLD (Y) from "4" to "2.4"; SETUP (X) from "0.75" to "-1.2"

Section 6.21.1

Table 6-86, JTAG ID (JTAGID) Register Selection Bit Descriptions:

Updated/Changed VARIANT field DESCRIPTION

Revision History

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