Datasheet

8−12
SLLS535E − April 2008TUSB6250
BIT FUNCTIONRESETNAME
2 P34ST 0 P3.4 status bit. This bit represents the debounced status value on the P3.4 pin.
3 P35ST 0 P3.5 status bit. This bit represents the debounced status value on the P3.5 pin.
4 CDCHG 0 Compact flash card/media detection pin status-change bit. This bit, when set, indicates a status
change occurred at either the CD1
or CD2 pin. The firmware must read the status of these two pins
to ensure a correct media insertion.
CDCHG = 0 No CF card/media detection status change occurred.
CDCHG = 1 CF card/media detection status change occurred on at least one CD pin.
5 VBUSCHG 0 VBUS status-change bit.
VBUSCHG = 0 No VBUS status change occurred.
VBUSCHG = 1 A VBUS status change occurred.
6 P34CHG 0 P34CHG status-change bit.
P34CHG = 0 No P3.4 pin status change occurred.
P34CHG = 1 A P3.4 pin status change occurred.
7 P35CHG 0 P35CHG status-change bit.
P35CHG = 0 No P3.5 pin status change occurred.
P35CHG = 1 A P3.5 pin status change occurred.
8.9 Endpoint-0 Descriptor Registers
All EDBs (endpoint descriptor block, including EDB-0 and EDB-1 to EDB-4) are implemented in registers.
Their respective endpoint data buffers are implemented in SPRAM. Table 8−2 defines the registers and their
respective address used for EDB-0.
EDB-0 has no base-address register, because these addresses are hardwired and depend on the
configuration set by the BZ[1:0] bits in the IEPCNFG_0 register (see Table 8−3).
Table 8−2. Input/Output EDB-0 Registers
ADDRESS REGISTER NAME DESCRIPTION
F004 OEPBCNX_0 Output endpoint_0: X-buffer byte-count register
F003 OEPCNFG_0 Output endpoint_0: configuration register
F001 IEPBCNX_0 Input endpoint_0: X-buffer byte-count register
F000 IEPCNFG_0 Input endpoint_0: configuration register
Table 8−3. Input/Output EDB-0 Buffer Location as Defined by BZ[1:0]
IN/OUT
DBUF=0 BZ[1:0]=0 BZ[1:0]=1 BZ[1:0]=2 BZ[1:0]=3
IN/OUT
ENDPOINT-0
SIZE (BYTES) = 8 16 32 64
Input
End address E00F E01F E03F E07F
Input
IEP0BA = E008 E010 E020 E040
Output
End address E007 E00F E01F E03F
Output
OEP0BA = E000 E000 E000 E000