ISP1561 Datasheet, PDF (25/102 Pages) NXP Semiconductors – ISP1561BM

Philips Semiconductors
ISP1561
USB PCI host controller
Table 26: SBRN register: bit description
Bit
Symbol Access
Value
7 to 0
SBRN[7:0] R
20H
Description
Serial Bus Specification Release Number: This register value is
to identify Serial Bus Specification Release 2.0. All other
combinations are reserved.
FLADJ register (address: 61H): This feature is used to adjust any offset from the
clock source that generates the clock that drives the SOF counter. When a new value
is written to these six bits, the length of the frame is adjusted. The bit allocation of the
register is given in Table 27.
Table 27: FLADJ register: bit allocation
Bit
7
6
5
4
3
2
1
0
Symbol
reserved
FLADJ[5:0]
Reset
0
0
1
0
0
0
0
0
Access
-
-
R/W
R/W
R/W
R/W
R/W
R/W
Table 28: FLADJ register: bit description
Bit
Symbol Description
7 to 6 -
reserved
5 to 0
FLADJ[5:0]
Frame Length Timing Value: Each decimal value change to this
register corresponds to 16 high-speed bit times. The SOF cycle time
(number of SOF counter clock periods to generate a SOF microframe
length) is equal to 59488 + value in this field. The default value is
decimal 32 (20H), which gives a SOF cycle time of 60000.
FLADJ Value
SOF cycle time
(480 MHz)
0 (00H)
59488
1 (01H)
59504
2 (02H)
59520
:
:
31(1FH)
59984
32 (20H)
60000
:
:
62 (3EH)
60480
63 (3FH)
60496
PORTWAKECAP register (address: 62H): The PORTWAKECAP register is a
two-byte register, and the bit description is given in Table 29. This register is used to
establish a policy about which ports are to be used for wake events. Bit positions
1 to 15 in the mask correspond to a physical port implemented on the current EHCI
controller. A logic 1 in a bit position indicates that a device connected below the port
can be enabled as a wake-up device and the port may be enabled for
disconnect/connect or overcurrent events as wake-up events. This is an information
only mask register. The bits in this register do not affect the actual operation of the
9397 750 10015
Product data
Rev. 01 — 06 February 2003
© Koninklijke Philips Electronics N.V. 2003. All rights reserved.
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