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6.1.2 Internal block diagram
USB Controller internal block diagram is as shown below.
D +
I/O
U S B
B uf
D -
USB Controller's configuration features the following blocks.
SIE (Serial Interface Engine): Performs Serial/Parallel conversion, NRZI encoding/decoding, CRC calculation,
EPC (EndPoints Controller): Performs data transmission/reception for each Endpoint.
Tx FIFO (Transmit FIFO):
Rx FIFO (Receive FIFO):
MCONT (Main Controller):
DMAC (DMA Controller):
Master_if (Master Interface): Master section of the Internal BUS interface.
Slave_if (Slave Interface):
I/O Buf (I/O Buffer):
Internal BUS:
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CHAPTER 6 USB CONTROLLER
Figure 6-1. USB Controller Internal Configuration
U S B C O N TR O LLE R
Tx FIFO
R x FIFO
S IE
E P C
etc.
FIFO for transmitting data
FIFO for receiving data
Block for controlling transmission and reception.
Block for controlling DMA transfer.
Slave section of the Internal BUS interface.
I/O buffer that satisfies the electrical specifications of the USB.
The internal bus of the µ PD98502.
Preliminary User's Manual S15543EJ1V0UM
M C O N T
B U S I/F
M aster
I/F
D M A C
S lav e
I/F
s lave
decoder
IB U S
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