ISP1130DL Philips Semiconductors, ISP1130DL Datasheet - Page 32

• Manufacturer Part Number: ISP1130DL
• Description: Universal Serial Bus compound hub with integrated keyboard controller
• Manufacturer: Philips Semiconductors

Table 39: Embedded Port Status register: bit allocation
Table 40: Embedded Port Status register: bit description
Table 41: Chip identification code: bit allocation
Philips Semiconductors
9397 750 06895
Objective specification
Bit
7 to 5
4
3
2
1
0
Bit
Symbol
Reset
Access
Bit
Symbol
Reset
Access
Bit
Symbol
Reset
Access
Symbol
-
PortReset
SuspendChange
Suspend
ConnectChange
Connect
15
W
R
R
X
7
0
7
0
-
-
9.3.6 Read Chip ID
Reports the chip identification code (12 bits), comprising the device release number
DEVREV (see
DEVNAME (see
bits of the chip identification code, byte 2 the most significant bits (see
Table
Code (Hex) — FD
Transaction — read 2 bytes.
14
W
X
R
R
6
0
6
0
-
-
42).
Description
reserved
A logic 1 signals that a Set Port Feature (PORT_RESET) request was received by
the embedded port. If this bit is logic 1, reading it will clear the bit, enable the
embedded port and report the end of the reset to the host.
A logic 1 signals that the value of the Suspend bit has changed. The Suspend bit
changes when the device enters ‘suspend’ mode or when it receives a ‘resume’
signal on its upstream port. This bit is cleared when it is read.
Upon reading this bit indicates the current ‘suspend’ status: A logic 1 indicates
that the embedded port is suspended.
Writing a logic 0 into this bit will generate a remote wake-up, if the embedded port
is suspended (Suspend = 1). Otherwise, writing a logic 0 has no effect.
Remark: Writing a logic 1 never has any effect.
A logic 1 signals that the value of the Connect bit has changed. This bit is cleared
when it is read.
Writing a logic 1 causes the embedded port to be connected, a logic 0
disconnects the embedded port. Upon reading this bit indicates the current
‘connect’ status.
Table 8 “Device
13
W
R
R
X
5
0
5
0
-
-
Table 13 “String
Rev. 01 — 23 March 2000
Reset
Port
12
R
R
R
4
0
0
4
0
-
DEVREV[7:0]
descriptor”) and the last digit of the device name
descriptors”). Byte 1 contains the least significant
USB compound hub with keyboard controller
Suspend
Change
11
R
R
R
3
0
0
3
0
Suspend
R/W
10
DEVNAME[3:0]
R
R
2
0
0
2
0
© Philips Electronics N.V. 2000. All rights reserved.
Connect
Change
R
R
R
1
0
9
0
1
0
ISP1130
Table 41
Connect
R/W
R
R
0
0
8
1
0
0
32 of 68
and