ISP1161ABD-T ST-Ericsson Inc, ISP1161ABD-T Datasheet - Page 33
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ISP1161ABD-T
Manufacturer Part Number
ISP1161ABD-T
Description
IC USB HOST CTRL FULL-SPD 64LQFP
Manufacturer
ST-Ericsson Inc
Datasheet
1.ISP1161ABD.pdf
(135 pages)
Specifications of ISP1161ABD-T
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
Available stocks
Company
Part Number
Manufacturer
Quantity
Price
Company:
Part Number:
ISP1161ABD-T
Manufacturer:
ST-Ericsson Inc
Quantity:
10 000
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Philips Semiconductors
9397 750 13962
Product data
9.4.3 Operation and C program example
Figure 29
mode. The ISP1161A provides one register as the access port for each buffer RAM.
For the ITL buffer RAM, the access port is the ITLBufferPort register (40H - read, C0H
- write). For the ATL buffer RAM, the access port is the ATLBufferPort register (41H -
read, C1H - write). The buffer RAM is an array of bytes (8 bits) while the access port
is a 16-bit register. Therefore, each read/write operation on the port accesses two
consecutive memory locations, incrementing the pointer of the internal buffer RAM by
two. The lower byte of the access port register corresponds to the data byte at the
even location of the buffer RAM, and the upper byte corresponds to the next data
byte at the odd location of the buffer RAM. Regardless of the number of data bytes to
be transferred, the command code must be issued merely once, and it will be
followed by a number of accesses of the data port (see
When the pointer of the buffer RAM reaches the value of the HcTransferCounter
register, an internal EOT signal will be generated to set bit 2, AllEOTInterrupt, of the
HcµPinterrupt register and update the HcBufferStatus register, to indicate that the
whole data transfer has been completed.
For ITL buffer RAM, every Start Of Frame (SOF) signal (1 ms) will cause toggling
between ITL0 and ITL1, but this depends on the buffer status. If both ITL0BufferFull
and ITL1BufferFull of the HcBufferStatus register are already logic 1, meaning that
both ITL0 and ITL1 buffer RAMs are full, the toggling will not happen. In this case, the
microprocessor will always have access to ITL1.
Fig 28. PTD data with DWORD alignment in buffer RAM.
shows the block diagram for internal FIFO buffer RAM operations in PIO
Rev. 03 — 23 December 2004
Full-speed USB single-chip host and device controller
top
payload data
payload data
RAM buffer
(14 bytes)
(8 bytes)
(8 bytes)
PTD
PTD
MGT953
© Koninklijke Philips Electronics N.V. 2004. All rights reserved.
00H
08H
15H
18H
20H
Section
8.4).
ISP1161A
32 of 134
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