USBN9603-28MX datasheet(24/62 Pages) TI

部品番号	USBN9603-28MX

部品情報	Universal Serial Bus Full Speed Node Controller with Enhanced DMA Support

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メーカー	TI [Texas Instruments]

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6.0 Functional Description (Continued)

23

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Figure 18. Node Functional State Diagram

Table 3. Functional States

State

Transition

Condition Asserted

set_reset

Node Functional State register NFS[1:0] bits are written with 00b

The ﬁrmware should only initiate set_reset if RESET in the ALTEV register is set.

set_suspend

Node Functional State register NFS[1:0] bits are written with 11b

The ﬁrmware should only initiate set_suspend if SD3 in the ALTEV register is set.

set_oper

Node Functional State register NFS[1:0] bits are written with 10b

clear_suspend

Node Functional State register NFS[1:0] bits are written with 01b

The ﬁrmware should only initiate clear_suspend if SD5 in the ALTEV register is set.

reset_det

RESET in the ALTEV register is set to 1

local_event

A local event that should wake up the USB.

sd5_det

SD5 in the ALTEV register is set to 1.

suspend_det

SD3 in the ALTEV register is set to 1.

resume_det

RESUME in the ALTEV register is set to1.

resume_compl

The node should stay in NodeResume state for at least 10mS and then must enter

USB Operational state to detect the EOP from the host, which terminates this Remote

Resume operation. EOP is signalled when EOP in the ALTEV register is set to 1.

10b

NodeOperational

00b

NodeReset

01b

NodeResume

11b

NodeSuspend

reset_det &set_reset

reset_det & set_reset

hw/sw reset

local_event & sd5_detect &

resume_det &

suspend_det &

set_suspend

resume_compl &

set_oper

Bold Italics = Transition initiated by firmware

set_oper

clear_suspend

Notes:

1.

When the node is not in NodeOperational state, all registers are frozen with the exception of the endpoint con-

troller state machines, and the TX_EN, LAST and RX_EN bits which are reset.

1.

In NodeResume state, resume signaling is propagated upstream.

2.

In NodeSuspend state, the node may enter a low power state and is able to detect resume signaling.

同様の部品番号 - USBN9603-28MX

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