Samsung VP-D455, Руководство по обслуживанию

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Reference Information
14-32 Samsung Electronics
14-2-7 ENDPOINTS SPECIFICATIONS
Serial Interface Unit
(SIU)
Endpoint 1(In)
Controller Endpoint 1(In)
FIFO
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
Endpoint 0
FIFO
Endpoint 1 (Out)
FIFO
Endpoint 0
Controller
Endpoint 1(Out)
Controller
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.
Packet size FIFO size mode in/out/control
Endpoint 0 16 bytes 16 bytes single Control
Endpoint 1 32 bytes 64 bytes dual Interrupt (Reserve)
Endpoint 2 64 bytes 128 bytes dual Bulk in (device ➝ PC)
Endpoint 3 64 bytes 128 bytes dual Bulk out (device PC)
14-2-8 BLOCK DIAGRAM
<Table14-2 Endpoints Specifications>
Fig. 14-23
Each endpoint has a FIFO and a controller