SL811HS
Document #: 38-08008 Rev. *A
Page 20 of 29
6.2.3
SL811HST-AC USB Host Controller Pins Description
The SL811HST-AC is packaged in a 48-pin TQFP. The device requires a 3.3VDC power source. The SL811HST-AC requires an
external 12 or 48 MHz crystal or Clock.
Table 6-2. SL811HST-AC Pin Assignments and Definitions
Pin No.
Pin Type
Pin Name
Pin Description
1
NC
NC
NC
2
NC
NC
NC
3
IN
nWR
Write Strobe Input. An active LOW input used with nCS to Write to
registers/data memory.
4
IN
nCS
Active LOW SL811HST-AC Chip select. Used with nRD and nWr when
accessing SL811HT.
5
IN
CM
Clock Mode. Select 12-MHz/48-MHz Clock Source.[9]
6
VDD1
+3.3 VDC
Power for USB Transceivers. VDD1 may be connected to VDD.
7
BIDIR
DATA +
USB Differential Data Signal HIGH Side
8
BIDIR
DATA -
USB Differential Data Signal LOW Side
9
GND
USB GND
Ground Connection for USB
10
NC
NC
NC
11
NC
NC
NC
12
NC
NC
NC
13
NC
NC
NC
14
NC
NC
NC
15
VDD
+3.3 VDC
SL811HST-AC Device VDD Power
[10]
16
IN
CLK/X1
Clock or External Crystal X1 connection[11]
17
OUT
X2
External Crystal X2 connection
18
IN
NRST
SL811HST-AC Device active low reset input
19
OUT
INTRQ
Active HIGH Interrupt Request output to external controller
20
GND
GND
SL811HST-AC Device Ground
21
BIDIR
D0
Data 0. Microprocessor Data/(Address) Bus.
22
NC
NC
NC
23
NC
NC
NC
24
NC
NC
NC
25
NC
NC
NC
26
NC
NC
NC
27
BIDIR
D1
Data 1. Microprocessor Data/(Address) Bus.
28
BIDIR
D2
Data 2. Microprocessor Data/(Address) Bus.
29
BIDIR
D3
Data 3. Microprocessor Data/(Address) Bus.
30
GND
GND
SL811HST-AC Device Ground
31
BIDIR
D4
Data 4. Microprocessor Data/(Address) Bus.
32
BIDIR
D5
Data 5. Microprocessor Data/(Address) Bus.
Notes:
9.
The CM Clock Multiplier pin should be tied HIGH for a 12-MHz clock source and tied to ground for a 48-MHz clock source. In SL11H, this pin was designated
as ALE input pin.
10. VDD can be derived from the USB supply. See diagram.
11.
The X1/X2 Clock requires external 12- or 48-MHz matching crystal or clock source.
English ▼
English
Chinese
German
Japanese
Russian
Korean
Spanish
French
Italian
Portuguese
Polish
Vietnamese
Indian
Mexican
British
New Zealand
