ISP1362
Single-chip USB OTG controller
Philips Semiconductors
Table 98: HcATLPTDDoneMap register: bit description
Bit
Symbol
Access Value
0000H
Description
31 to 0
PTDDone
Bits[31:0]
R
0 — The PTD stored in the ATL buffer was not
successfully processed by the HC.
1 — The PTD stored in the ATL buffer was
successfully processed by the HC.
15.9.5 HcATLPTDSkipMap register (R/W: 1CH/9CH)
This is a 32-bit register, and the bit description is given in Table 99. Bit 0 of the
register represents the first PTD stored in the ATL buffer, bit 1 represents the second
PTD stored in the buffer, and so on. When the bit is set by the HCD, the
corresponding PTD is skipped and is not processed by the HC. The HC processes
the skipped PTD only if the HCD has reset its corresponding skipped bit to logic 0.
Clearing the corresponding bit in the HcATLPTDSkipMap register when there is no
valid data in the block will cause unpredictable behavior of the HC.
Code (Hex): 1C — read
Code (Hex): 9C — write
Table 99: HcATLPTDSkipMap register: bit description
Bit
Symbol
Access Value
R/W 0000H
Description
31 to 0 SkipBits
[31:0]
0 — The HC processes the PTD.
1 — The HC skips processing the PTD.
15.9.6 HcATLLastPTD register (R/W: 1DH/9DH)
This is a 32-bit register. Table 100 gives the bit description of the register. Bit 0 of the
register represents the first PTD stored in the ATL buffer, bit 1 represents the second
PTD stored in the buffer, and so on. The bit that is set to logic 1 by the HCD is used
as an indication to the HC that its corresponding PTD is the last PTD stored in the
ATL buffer. When the processing of the last PTD is complete, the HC loops back to
process the first PTD stored in the buffer.
Code (Hex): 1D — read
Code (Hex): 9D — write
Table 100: HcATLLastPTD register: bit description
Bit
Symbol
Access Value Description
31 to 0 LastPTD
Bits[31:0]
R/W 0000H 0 — The PTD is not the last PTD stored in the
buffer.
1 — The PTD is the last PTD stored in the buffer.
15.9.7 HcATLCurrentActivePTD register (R: 1EH)
This register indicates which PTD stored in the ATL buffer is currently active and is
updated by the HC. The HCD can use it as a buffer pointer to decide which PTD
locations are currently free for filling in new PTDs to the buffer. This indication helps
to prevent the HCD from accidentally writing into the currently active PTD buffer
location. Table 101 shows the bit allocation of the register.
Code (Hex): 1E — read only
9397 750 12337
© Koninklijke Philips Electronics N.V. 2004. All rights reserved.
Product data
Rev. 03 — 06 January 2004
108 of 150
NXP [ NXP ]
