ISP1161ABD-S ST-Ericsson Inc, ISP1161ABD-S Datasheet - Page 30

• Manufacturer Part Number: ISP1161ABD-S
• Description: IC USB HOST CTRL FULL-SPD 64LQFP
• Manufacturer: ST-Ericsson Inc

Specifications of ISP1161ABD-S

• Controller Type: USB 2.0 Controller
• Interface: Parallel
• Voltage - Supply: 3.3V, 5V
• Current - Supply: 47mA
• Operating Temperature: -40°C ~ 85°C
• Mounting Type: Surface Mount
• Package / Case: 64-LQFP
• Lead Free Status / RoHS Status: Lead free / RoHS Compliant

Philips Semiconductors
Table 5:
9397 750 13962
Product data
Symbol
DirectionPID[1:0]
B5_5
Format
FunctionAddress[6:0]
Philips Transfer Descriptor (PTD): bit description
9.4.1 Partitions
9.4 HC internal FIFO buffer RAM structure
Access
R
R/W
R
R
According to the Universal Serial Bus Specification Rev. 2.0 , there are four types of
USB data transfers: Control, Bulk, Interrupt and Isochronous.
The HC’s internal FIFO buffer RAM has a physical size of 4 kbytes. This internal FIFO
buffer RAM is used for transferring data between the microprocessor and USB
peripheral devices. This on-chip buffer RAM can be partitioned into two areas:
Acknowledged Transfer List (ATL) buffer and Isochronous (ISO)Transfer List (ITL)
buffer. The ITL buffer is a Ping-Pong structured FIFO buffer RAM that is used to keep
the payload data and their PTD header for Isochronous transfers. The ATL buffer is a
non Ping-Pong structured FIFO buffer RAM that is used for the other three types of
transfers.
The ITL buffer can be further partitioned into ITL0 and ITL1 for the Ping-Pong
structure. The ITL0 buffer and ITL1 buffer always have the same size. The
microprocessor can put ISO data into either the ITL0 buffer or the ITL1 buffer. When
the microprocessor accesses an ITL buffer, the HC can take over the other ITL buffer
at the same time. This architecture improves the ISO transfer performance.
The HCD can assign the logical size for the ATL buffer and ITL buffers at any time, but
normally at initialization after power-on reset. This is done by setting the
HcATLBufferLength register (2BH - read, ABH - write) and HcITLBufferLength
register (2AH - read, AAH - write). The total buffer length cannot exceed the
maximum RAM size of 4 kbytes (ATL buffer + ITL buffer).
partitions of the internal FIFO buffer RAM. When assigning buffer RAM sizes, follow
this formula:
ATL buffer length + 2 × (ITL buffer size) ≤ 1000H (that is, 4 kbytes)
where: ITL buffer size = ITL0 buffer length = ITL1 buffer length
The following assignments are examples of legal uses of the internal FIFO buffer
RAM:
•
ATL buffer length = 800H, ITL buffer length = 400H.
This is the maximum use of the internal FIFO buffer RAM.
00
01
10
11
This bit is logic 0 at power-on reset. When this feature is not used, software used for
ISP1161A is the same for ISP1160 and ISP1161. When this bit is set to logic 1 in this
PTD for interrupt endpoint transfer, only 1 PTD USB transaction will be sent out in 1 ms.
The format of this data structure. If this is a Control, Bulk or Interrupt endpoint, then
Format = 0. If this is an Isochronous endpoint, then Format = 1.
This is the USB address of the function containing the endpoint that this PTD refers to.
SETUP
OUT
IN
reserved
Rev. 03 — 23 December 2004
Full-speed USB single-chip host and device controller
…continued
Description
© Koninklijke Philips Electronics N.V. 2004. All rights reserved.
Figure 26
ISP1161A
shows the
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