mc68hc908jw32 Freescale Semiconductor, Inc, mc68hc908jw32 Datasheet - Page 159

• Manufacturer Part Number: mc68hc908jw32
• Description: M68hc08 Microcontrollers Microcontroller
• Manufacturer: Freescale Semiconductor, Inc

11.5.6 USB Endpoint 1–4 Data Size Register (UEP1DSR–UEP4DSR)
DSIZE[6:0] — Packet Data Size
11.5.7 USB Endpoint 1/2 and 3/4 Base Pointer Register (UEP12BPR–UEP34BPR)
BASEx[2:0] — Base Location Pointer
There are total 64 bytes of dedicated RAM space assigned to the module, the addressable space is from
address $1000 to $103F. User must allocated appropriate buffer area to the endpoint which matches with
the packet size reported to the host. This register indicates the base address pointer for the endpoint
buffer area. The pointer location must align to the 8 bytes boundary. BASEx[2:0] specifies only the 3
address bits A5-A3. When USBEN is set, these bit have no effect.
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When the corresponding endpoint is configured as IN endpoint, these bits indicates the packet size to
be transmitted. When the corresponding endpoint is configured as OUT endpoint, these bits indicates
the packet size received.
Address:
Address:
Reset:
Reset:
Reset:
Read:
Read:
Read:
Write:
Write:
Write:
%0001 0000
A15–A8
Bit 7
Bit 7
Figure 11-9. USB Endpoint 1-4 Data Pointer Register
$0059 to $005C
$005D to $005E
0
0
0
Figure 11-8. USB Endpoint 1–4 Data Size Register
Table 11-6. BASEx[2:0] Address Definition
= Unimplemented
= Unimplemented
BASE22
BASE42
DSIZE6
6
0
6
0
0
MC68HC908JW32 Data Sheet, Rev. 5
A7
BASE21
BASE41
0
DSIZE5
5
0
5
0
0
A6
0
BASE20
BASE40
DSIZE4
4
0
4
0
0
A5
DSIZE3
BASEx[2:0]
3
0
3
0
0
A4
BASE12
BASE32
DSIZE2
2
0
2
0
0
A3
BASE11
BASE31
DSIZE1
A2
0
1
0
1
0
0
USB Module Registers
A1
BASE10
BASE30
0
DSIZE0
Bit 0
Bit 0
0
0
0
A0
0
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