ISP1161A1BMGA STEricsson, ISP1161A1BMGA Datasheet - Page 53

• Manufacturer Part Number: ISP1161A1BMGA
• Manufacturer: STEricsson

Specifications of ISP1161A1BMGA

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

Table 22.
ISP1161A1_5
Product data sheet
Bit
Symbol
Reset
Access
Bit
Symbol
Reset
Access
Bit
Symbol
Reset
Access
Bit
Symbol
Reset
Access
HcFmRemaining register: bit allocation
10.2.2 HcFmRemaining register (R: 0EH)
10.2.3 HcFmNumber register (R: 0FH)
FRT
31
23
15
R
R
0
0
7
reserved
The HcFmRemaining register is a 14-bit down counter showing the bit time remaining in
the current frame.
Code (Hex): 0E — read
Table 23.
The HcFmNumber register is a 16-bit counter. It provides a timing reference for events
happening in the HC and the HCD. The HCD may use the 16-bit value specified in this
register and generate a 32-bit frame number without requiring frequent access to the
register.
Code (Hex): 0F — read
Bit
31
30 to 14
13 to 0
30
22
14
R
R
0
0
6
HcFmRemaining register: bit description
Symbol
FRT
-
FR[13:0]
29
21
13
R
R
0
0
5
Rev. 05 — 29 September 2009
Description
FrameRemainingToggle: This bit is loaded from the
FrameIntervalToggle field of the HcFmInterval register whenever
FrameRemaining reaches 0. This bit is used by the HCD for
synchronization between FrameInterval and FrameRemaining.
reserved
FrameRemaining: This counter is decremented at each bit time.
When it reaches zero, it is reset by loading the FrameInterval value
specified in the HcFmInterval register at the next bit time boundary.
When entering the USBOperational state, the HC reloads it with the
content of the FrameInterval part of the HcFmInterval register and
uses the updated value from the next SOF.
28
20
12
R
R
0
0
4
reserved
FR[7:0]
00H
00H
R
R
reserved
USB single-chip host and device controller
27
19
11
R
R
0
0
3
FR[13:8]
26
18
10
R
R
0
0
2
ISP1161A1
© ST-ERICSSON 2009. All rights reserved.
25
17
R
R
0
9
0
1
53 of 137
24
16
R
R
0
8
0
0