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AM6421 Datasheet(PDF) 60 Page - Texas Instruments

Part # AM6421
Description  AM64x Sitara™ Processors
PDF  273 Pages
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Manufacturer  TI2 [Texas Instruments]
Direct Link  https://www.ti.com
Logo TI2 - Texas Instruments

AM6421 Datasheet(HTML) 60 Page - Texas Instruments

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Table 5-7. CPTS0 Signal Descriptions (continued)
SIGNAL NAME [1]
SIGNAL
TYPE [2]
DESCRIPTION [3]
ALV/ANI PIN [4]
CPTS0_TS_SYNC
O
CPTS Time Stamp Counter Bit Output
D14, U1, U7
CPTS0_HW1TSPUSH
I
CPTS Hardware Time Stamp Push Input to Time Sync
Router
C18, V1, V7
CPTS0_HW2TSPUSH
I
CPTS Hardware Time Stamp Push Input to Time Sync
Router
B19, T1, U13
SYNC0_OUT
O
CPTS Time Stamp Generator Bit 0 Output from Time Sync
Router
D18
SYNC1_OUT
O
CPTS Time Stamp Generator Bit 1 Output from Time Sync
Router
A19
SYNC2_OUT
O
CPTS Time Stamp Generator Bit 2 Output from Time Sync
Router
A17
SYNC3_OUT
O
CPTS Time Stamp Generator Bit 3 Output from Time Sync
Router
B17
5.3.4 DDRSS
5.3.4.1 MAIN Domain
Table 5-8. DDRSS0 Signal Descriptions
SIGNAL NAME [1]
SIGNAL
TYPE [2]
DESCRIPTION [3]
ALV/ANI PIN [4]
DDR0_ACT_n
O
DDRSS Activation Command
H2
DDR0_ALERT_n
IO
DDRSS Alert
H1
DDR0_CAS_n
O
DDRSS Column Address Strobe
J5
DDR0_PAR
O
DDRSS Command and Address Parity
K5
DDR0_RAS_n
O
DDRSS Row Address Strobe
F6
DDR0_WE_n
O
DDRSS Write Enable
H4
DDR0_A0
O
DDRSS Address Bus
D2
DDR0_A1
O
DDRSS Address Bus
C5
DDR0_A2
O
DDRSS Address Bus
E2
DDR0_A3
O
DDRSS Address Bus
D4
DDR0_A4
O
DDRSS Address Bus
D3
DDR0_A5
O
DDRSS Address Bus
F2
DDR0_A6
O
DDRSS Address Bus
J2
DDR0_A7
O
DDRSS Address Bus
L5
DDR0_A8
O
DDRSS Address Bus
J3
DDR0_A9
O
DDRSS Address Bus
J4
DDR0_A10
O
DDRSS Address Bus
K3
DDR0_A11
O
DDRSS Address Bus
J1
DDR0_A12
O
DDRSS Address Bus
M5
DDR0_A13
O
DDRSS Address Bus
K4
DDR0_BA0
O
DDRSS Bank Address
G4
DDR0_BA1
O
DDRSS Bank Address
G5
DDR0_BG0
O
DDRSS Bank Group
G2
DDR0_BG1
O
DDRSS Bank Group
H3
DDR0_CAL0 (1)
A
IO Pad Calibration Resistor
H5
DDR0_CK0
O
DDRSS Clock
F1
DDR0_CK0_n
O
DDRSS Negative Clock
E1
DDR0_CKE0
O
DDRSS Clock Enable
F4
AM6442, AM6441, AM6422, AM6421, AM6412, AM6411
SPRSP56J – JANUARY 2021 – REVISED JUNE 2026
www.ti.com
60
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Copyright © 2026 Texas Instruments Incorporated
Product Folder Links: AM6442 AM6441 AM6422 AM6421 AM6412 AM6411



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