ISP1161A1BMUM STEricsson, ISP1161A1BMUM Datasheet - Page 13

• Manufacturer Part Number: ISP1161A1BMUM
• Manufacturer: STEricsson

Specifications of ISP1161A1BMUM

• Operating Temperature (max): 85C
• Operating Temperature (min): -40C
• Operating Temperature Classification: Industrial
• Mounting: Surface Mount
• Lead Free Status / RoHS Status: Compliant

Philips Semiconductors
8. Microprocessor bus interface
9397 750 13961
Product data
7.6 GoodLink
8.1 Programmed I/O (PIO) addressing mode
8.2 DMA mode
Indication of a good USB connection is provided at pin GL through GoodLink
technology. During enumeration, the LED indicator will blink on momentarily. When
the DC has been successfully enumerated (the device address is set), the LED
indicator will remain permanently on. Upon each successful packet transfer (with
ACK) to and from the ISP1161A1 the LED will blink off for 100 ms. During ‘suspend’
state the LED will remain off.
This feature provides a user-friendly indication of the status of the USB device, the
connected hub and the USB traffic. It is a useful field diagnostics tool for isolating
faulty equipment. It can therefore help to reduce field support and hotline overhead.
A generic PIO interface is defined for speed and ease-of-use. It also allows direct
interfacing to most microcontrollers. To a microcontroller, the ISP1161A1 appears as
a memory device with a 16-bit data bus and uses only two address lines: A1 and A0
to access the internal control registers and FIFO buffer RAM. Therefore, the
ISP1161A1 occupies only four I/O ports or four memory locations of a
microprocessor. External microprocessors can read from or write to the ISP1161A1
internal control registers and FIFO buffer RAM through the Programmed I/O (PIO)
operating mode.
microprocessor and an ISP1161A1.
The ISP1161A1 also provides DMA mode for external microprocessors to access its
internal FIFO buffer RAM. Data can be transferred by DMA operation between a
microprocessor’s system memory and the ISP1161A1 internal FIFO buffer RAM.
Remark: The DMA operation must be controlled by the external microprocessor
system DMA controller (Master).
Fig 8. Programmed I/O interface between a microprocessor and an ISP1161A1.
Rev. 03 — 23 December 2004
Figure 8
PROCESSOR
MICRO-
shows the Programmed I/O interface between a
D [ 15:0 ]
IRQ1
IRQ2
WR
RD
CS
A2
A1
USB single-chip host and device controller
P bus I/F
D [ 15:0 ]
RD
WR
CS
A1
A0
INT1
INT2
© Koninklijke Philips Electronics N.V. 2004. All rights reserved.
ISP1161A1
ISP1161A1
004aaa178
12 of 136