cs5535 National Semiconductor Corporation, cs5535 Datasheet - Page 265

• Manufacturer Part Number: cs5535
• Description: Geode Cs5535 Companion Multi-function South Bridge
• Manufacturer: National Semiconductor Corporation

Revision 0.8
USB Register Descriptions
5.5.1.3
MSR Address
Type
Reset Value
63 62 61 60 59 58 57 56 55 54 53 52 51 50 49 48 47 46 45 44 43 42 41 40 39 38 37 36 35 34 33 32
31 30 29 28 27 26 25 24 23 22 21 20 19 18 17 16 15 14 13 12 11 10
18:16
15:14
11:0
Bit
19
13
12
GeodeLink Device SMI MSR (USBC_GLD_MSR_SMI)
Name
SEL
FIX_PREFETCH
RSVD
USB_LOPWR_EN
USB_GLITCHFIX
_EN
RSVD
USBC1: 51600002h
USBC2: 51200002h
R/W
00000000_00000000h
USBC_GLD_MSR_CONFIG Bit Descriptions (Continued)
Description
Select.
0: Use field [18:16].
1: Use field [22:20].
Fixed Read Prefetch Policy.
000: None. Each read takes a complete trip to memory.
001: Initial read 08 bytes. Read next 8 only when requested.
010: Initial read 16 bytes. Read next 16 only when requested.
011: Initial read 32 bytes. Read next 32 only when requested.
100: Initial read 32 bytes. Read next 32 when 16 bytes left.
101, 110, and 111: Reserved.
Reserved. Read as written.
USB Low Power Enable. When 0, the transceiver is prevented from entering the low
power Suspend state. This bit has no functional impact on the transceiver or USB Con-
troller. Defaults to 1 (i.e., Suspend allowed).
USB Glitch Fix Enable: When 0, enable transceiver de-glitch logic. This logic sup-
presses a glitch that can occur when:
1)
and
2)
Defaults to 1 (i.e., no glitch suppression).
Note that this bit represents a deviation from the standard MSR_CONFIG register in
Section 3.8.2 "MSR Address 1: Master Configuration" on page 67.
Reserved. Read as written.
The transceiver moves from the suspend state to any other state.
A low speed device is connected. The state is defined by HcControl[7:6].
(Continued)
USBC_GLD_MSR_SMI Register Map
RSVD
RSVD
265
9
8
7
6
5
4
3
www.national.com
2
1
0