TMP92CF30
2009-06-12
92CF30-377
3.16.3.22 INT_Control Register
INT_STASN interrupt is disabled and enabled by the value that is written to this
register.
This is initialized to disable by external reset. When setup packet is received, it
becomes disabled.
7
6
5
4
3
2
1
0
bit Symbol
Status_nak
Read/Write
R/W
INT_Control
(07D6H)
Reset State
0
In control read transfer, if the host terminates a dataphase with small data length
(smaller than the data length that is specified by the host as wLength), the device side
and stage management cannot be synchronized. Therefore, INT_STASN interrupt
signals this shift to status stage. If needed, set to “1” after receiving setup packet.
STATUS_NAK (Bit0)
0: INT_STATSN interrupt disable
1: INT_STATSN interrupt enable
3.16.3.23 USB STATE Register
This register shows the current device state for connection with USB host.
7 6 5 4 3 2 1 0
bit Symbol
Configured
Addressed
Default
Read/Write
R/W R R
USB STATE
(07CEH)
Reset State
0
0
1
Note: When writing to this register, a recovery time of 5clocks at 12MHz is needed. After writing this register, insert
dummy instruction of 420 ns or longer.
Inside the UDC, the answer for each Device Request is managed by referring to
these bits (Configured, Addressed and Default). If transaction for SET_CONFIG
request is executed by using software, write the present state to this register. If host
appointconfig is 0, this becomes Unconfigured, and it is necessary to return to
Addressed state. Therefore, if host appoint config is 0, write “0” to bit2.
When Configured bit (Bit2) is written “0”, Addressed bit (bit 1) is set automatically
by hardware. When host appoint config value that supported by device, device must
execute mode setting for each endpoint by using the value that is appointed by
endpoint-descriptor in the config-descriptor. After finish mode setting, set Configured
bit (Bit2) to “1” before accessing EOP register. When this bit is set to “1”, Addressed bit
(Bit1) is set to “0” automatically.
Bit2 to bit0
000:
Default
010:
Addressed
100:
Configured
Содержание TLCS-900/H1 Series
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