USBN9602-28MX National Semiconductor, USBN9602-28MX Datasheet - Page 17

• Manufacturer Part Number: USBN9602-28MX
• Description: IC CTRLR FULL SPD FUNC 28-SOIC
• Manufacturer: National Semiconductor

Specifications of USBN9602-28MX

• Controller Type: USB Node
• Interface: MICROWIRE/PLUS™. Serial, Parallel
• Voltage - Supply: 3.3V
• Current - Supply: 30mA
• Mounting Type: Surface Mount
• Package / Case: 28-SOIC
• Lead Free Status / RoHS Status: Contains lead / RoHS non-compliant
• Operating Temperature: -
• Other names: *USBN9602-28MX

9.0 Device Functional States
The following notes apply to the state diagram:
Table 2 describes the individual conditions that trigger state transitions.
set_reset
set_suspend
set_oper
clear_suspend
reset_det
local_event
sd5_det
suspend_det
resume_det
resume_compl
– When the node is not in the NodeOperational state, all port registers and internal Endpoint states are reset.
– In the NodeResume state, resume signaling is propagated upstream.
– In the NodeSuspend state, the node may enter a low-power state and is able to detect resume signaling.
Transition
State
suspend_det &
set_suspend
Node Functional State register NFS[1:0] bits are written with 00
set_reset if ALTEV.RESET is set.
Node Functional State register NFS[1:0] bits are written with 11
set_suspend if ALTEV.SD3 is set.
Node Functional State register NFS[1:0] bits are written with 10
Node Functional State register NFS[1:0] bits are written with 01
clear_suspend if ALTEV.SD5 is set.
Alternate Event register RESET bit set (ALTEV.RESET = 1).
A local event that should wake up the USB.
Alternate Event register SD5 bit set (ALTEV.SD5 = 1).
Alternate Event register SD3 bit set (ALTEV.SD3 = 1).
Alternate Event register RESUME bit set (ALTEV.RESUME = 1).
The node should stay in the NodeResume state for at least 10ms and then must enter the Node-
Operational state to detect the EOP from the host, which terminates this remote resume operation.
EOP is indicated by ALTEV.EOP = 1.
NodeSuspend
11
b
resume_det &
set_oper
local_event & sd5_detect &
Figure 14. Node Functional State Diagram
NodeOperational
Table 2. State Transition Conditions
clear_suspend
(Continued)
10
b
resume_compl &
set_oper
reset_det & set_reset
NodeResume
17
Condition Asserted
01
b
reset_det &
set_reset
set_oper
transition initiated by firmware
NodeReset
00
b
b
b
b
b
. The firmware should only initiate
. The firmware should only initiate
. The firmware should only initiate
.
hw/sw reset
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