Motorola DigitalDNA ColdFire MCF5272 User Manual page 272

Register Description and Programming Model
15
Field CONFIG
Reset
R/W
Addr
Figure 12-12. USB Endpoint 0 Status Register (EP0SR)
Table 12-10 lists field descriptions the USB endpoint 0 status register.
Bits Name
15–12 CONFIG
11 WAKE_ST Remote wakeup status. Indicates whether the USB module has been enabled to
10–3 —
2 HALT_ST
1 DIR
0 —
12.3.2.10 USB Endpoint 0 IN Configuration Register (IEP0CFG)
Figure 12-13 shows the USB Endpoint 0 IN configuration (IEP0CFG) register.
12-14
12 11 10
WAKE_ST
0000_0000_0000_0001
Table 12-10. EP0SR Field Descriptions
Current configuration number. Indicates which configuration is active. Receiving a
SET_CONFIGURATION USB standard device request sets the active configuration. A
configuration setting of 0 means that the device is unconfigured. Valid only when
EPISR0[DEV_CFG] is set
generate remote wakeup resume signaling.
1 Enabled. The USB host has issued the SET_FEATURE request with the Remote
wakeup feature selector set.
0 Disabled. The USB host has issued the CLEAR_FEATURE request with the remote
wakeup feature selector set, or has not set this feature since a USB or system reset
has occurred.
Reserved, should be cleared.
Current endpoint 0 halt status. Indicates whether endpoint 0 is currently halted or active.
Endpoint 0 is halted if there is an error processing a request. A halt is cleared
automatically by a SETUP packet.
1 Endpoint 0 halted
0 Endpoint 0 active
Current endpoint 0 direction. Indicates whether endpoint 0 is currently accessed as an IN
or OUT endpoint.
1 The endpoint is configured as an IN endpoint
0 The endpoint is configured as an OUT endpoint
Reserved, should be cleared.
MCF5272 User's Manual
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MBAR + 0x1026
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HALT_ST DIR —