Samsung VP-D361W Service Manual page 242

Reference Information
14-2-7 ENDPOINTS SPECIFICATIONS
Packet size
Endpoint 0 16 bytes
Endpoint 1 32 bytes
Endpoint 2 64 bytes
Endpoint 3 64 bytes
14-2-8 BLOCK DIAGRAM
Serial Interface Unit
(SIU)
1) Serial Interface Engine (SIE)
SIE implements NRZI decoding/encoding, CRC generation and checking. It also provides an interface signal
for the external USB transceiver.
2) Serial Interface Unit (SIU)
It implements an endpoint address decoding for the USB packet.
3) Endpoint Controls
Endpoint 0 controller only implements a control transfer. Other endpoints (1-3) can set up In/Out randomly
using the setting of the In/Out programming bit. However, once the direction is set up, it cannot be changed.
Also, aach endpoint can be set up as isochronous, bulk or interrupt type.
14-32
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<Table14-2 Endpoints Specifications >
FIFO size mode
16 bytes single
64 bytes dual
128 bytes dual
128 bytes dual
Endpoint 1(In) Endpoint 1(In)
Controller
Endpoint 0
Endpoint 0
Controller
Endpoint 1(Out)
Endpoint 1 (Out)
Controller
Fig. 14-23 Each endpoint has a FIFO and a controller
in/out/control
Control
Interrupt (Reserve)
Bulk in (device PC)
Bulk out (device
FIFO
FIFO
FIFO
PC)
MC_ADDR[4:0]
MC_DATA[7:0]
MC_RDN
MC_WRN
MC_CLK
SYS_RESET
USB_RESET
MC_SUSPEND
MC_RESUME
MC_INTR
MC_CSN
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