ISP1362EE/01 PHILIPS [NXP Semiconductors], ISP1362EE/01 Datasheet - Page 55

• Manufacturer Part Number: ISP1362EE/01
• Description: Single-chip Universal Serial Bus On-The-Go controller
• Manufacturer: PHILIPS [NXP Semiconductors]

Philips Semiconductors
9397 750 12337
Product data
13.4.1 Selecting an endpoint for the DMA transfer
13.4.2 8237 compatible mode
The following features are supported:
The target endpoint for DMA access is selected using bits EPDIX[3:0] of the
DcDMAConfiguration register, as shown in
write) is automatically set by the EPDIR bit in the associated ECR, to match the
selected endpoint type (OUT endpoint: read; IN endpoint: write).
Asserting input DACK2 automatically selects the endpoint specified in the
DcDMAConfiguration register, regardless of the current endpoint used for the
I/O mode access.
Table 17:
The 8237 compatible DMA mode is selected by clearing the DAKOLY bit of the
DcHardwareConfiguration register (see
are shown in
Table 18:
Endpoint
identifier
1
2
3
4
5
6
7
8
9
10
11
12
13
14
Symbol
DREQ2
DACK2
EOT
RD
WR
•
•
•
•
Single-cycle or burst transfers (up to 16 bytes per cycle)
Programmable transfer direction (read or write)
Multiple End-Of-Transfer (EOT) sources: internal conditions, short or empty packet
Programmable signal levels on pins DREQ2 and DACK2.
Endpoint selection for DMA transfer
8237 compatible mode: pin functions
Description
DMA request of DC
DMA acknowledge of DC
end of transfer
read strobe
write strobe
Table
Rev. 03 — 06 January 2004
EPIDX[3:0]
0010
0011
0100
0101
0110
0111
1000
1001
1010
1011
1100
1101
1110
1111
18.
Transfer direction
EPDIR = 0
OUT: read
OUT: read
OUT: read
OUT: read
OUT: read
OUT: read
OUT: read
OUT: read
OUT: read
OUT: read
OUT: read
OUT: read
OUT: read
OUT: read
I/O
O
I
I
I
I
Table
Table
114). The pin functions for this mode
Function
DC requests a DMA transfer
DMA controller confirms the transfer
DMA controller terminates the transfer
instructs the DC to put data on the bus
instructs the DC to get data from the bus
17. The transfer direction (read or
Single-chip USB OTG controller
© Koninklijke Philips Electronics N.V. 2004. All rights reserved.
EPDIR = 1
IN: write
IN: write
IN: write
IN: write
IN: write
IN: write
IN: write
IN: write
IN: write
IN: write
IN: write
IN: write
IN: write
IN: write
ISP1362
55 of 150