SL811ST CYPRESS [Cypress Semiconductor], SL811ST Datasheet - Page 18

• Manufacturer Part Number: SL811ST
• Description: SL811S/T USB Dual Speed Slave Controller
• Manufacturer: CYPRESS [Cypress Semiconductor]

6.5
6.6
The SL811ST is packaged in a 48-Pin LPQFP. The device requires 3.3VDC or +5VDC (VDD1) and a +3.3 VDC (VDD2) power
supply. Average typical current consumption is less than 22 mA for 3.3 V. The SL811ST requires an external 48-MHz Crystal or
Clock.
Document #: 38-08009 Rev. **
Pin No.
10
11
1
2
3
4
5
6
7
8
9
SL811ST 48-Pin LPQFP Mechanical Dimensions
SL811ST USB Controller, Pin Descriptions
Pin Type
VDD2
BIDIR
BIDIR
GND
NC
NC
NC
NC
IN
IN
IN
Pin Name
USB GND
3.3 VDC
DATA+
DATA–
nWR
nCS
CM
NC
NC
NC
NC
NC
NC
Write Strobe Input. An active low input used with nCS to write to registers/data
memory.
Active low SL811ST Chip select. Used with nRD and nWR when accessing
SL811ST.
Clock Mode. Enables DPLL 4x Multiplier when ‘1’. For use with 12-MHz Clock.
Tie to gnd for 48-MHz.
Power for USB Transceivers. VDD2 may be derived from VDD1. Note 4???
USB Differential Data Signal High Side.
USB Differential Data Signal Low Side.
Ground Connection for USB.
NC
NC
Pin Description
SL811S/T
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