SL811ST CYPRESS [Cypress Semiconductor], SL811ST Datasheet - Page 16

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

Notes:
Document #: 38-08009 Rev. **
1.
2.
3.
Pin No.
The A0 Address bit is used to access the address register or data registers in I/O Mapped or Memory Mapped applications.
VDD2 can be derived from a +5 VDC supply with a few additional components. The diagram below illustrates a simple method that provides 3.3V/22 mA. Another
option is to use a Torex Semiconductor 3.3V SMD regulator P/N XC62HR3302MR.
X1/X2 Clock requires external 12-/48-MHz matching crystal or clock source.
10
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
11
1
2
3
4
5
6
7
8
9
Pin Type
BIDIR
VDD2
BIDIR
VDD1
BIDIR
BIDIR
BIDIR
BIDIR
BIDIR
BIDIR
BIDIR
BIDIR
VDD1
GND
GND
GND
OUT
OUT
OUT
NC
IN
IN
IN
IN
IN
IN
IN
IN
Pin Name
USB GND
3.3 VDC
DATA +
3.3 VDC
CLK/X1
3.3 VDC
nDACK
DATA -
nDRQ
NRST
NWR
INTR
GND
GND
NRD
NCS
CM
NC
A0
X2
D0
D1
D2
D3
D4
D5
D6
D7
A0 = ’0’. Selects Address Pointer. Reg. Write Only.
or Register. R/W. In Multiplexed address applications; A0 should be tied to VDD1.
DMA Acknowledge. An active low input used to interface to an external DMA
controller.
DMA Request. An active low output used with an external DMA controller. nDRQ
and nDACK form the handshake for DMA data transfers.
Read Strobe Input. An active low input used with nCS to read registers/data
memory.
Write Strobe Input. An active low input used with nCS to write to registers/data
memory.
Active low SL811S Chip select. Used with nRD and nWD when accessing
SL811S.
Clock Mode. Enables DPLL 4x Multiplier for use with 12-MHz Clock.
Power for USB Transceivers. Can be connected to Vdd1.
USB Differential Data Signal High Side.
USB Differential Data Signal Low Side.
Ground Connection for USB.
SL811S Device VDD Power.
12/48 MHz Clock or External Crystal X1 connection.
External Crystal X2 connection.
SL811S Device active low reset input.
Active high Interrupt Request output to external controller.
SL811S Device Ground
Data 0. Microprocessor Data/(Address) Bus.
Data 1. Microprocessor Data/(Address) Bus.
Data 2. Microprocessor Data/(Address) Bus.
Data 3. Microprocessor Data/(Address) Bus.
SL811S Device Ground.
Data 4. Microprocessor Data/(Address) Bus.
Data 5. Microprocessor Data/(Address) Bus.
Data 6. Microprocessor Data/(Address) Bus.
Data 7. Microprocessor Data/(Address) Bus.
No Connect.
SL811S Device VDD Power.
Pin Description
[1]
A0 = ’1’. Selects Data Buffer
SL811S/T
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