AN2136SC Cypress Semiconductor Corp, AN2136SC Datasheet - Page 181
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AN2136SC
Manufacturer Part Number
AN2136SC
Description
IC MCU 8051 8K RAM 24MHZ 44QFP
Manufacturer
Cypress Semiconductor Corp
Series
EZ-USB®r
Datasheet
1.AN2131SC.pdf
(334 pages)
Specifications of AN2136SC
Applications
USB Microcontroller
Core Processor
8051
Program Memory Type
ROMless
Controller Series
AN213x
Ram Size
8K x 8
Interface
I²C, USB
Number Of I /o
8
Voltage - Supply
3 V ~ 3.6 V
Operating Temperature
0°C ~ 70°C
Mounting Type
Surface Mount
Package / Case
44-QFP
Lead Free Status / RoHS Status
Contains lead / RoHS non-compliant
Other names
428-1309
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connected to Vcc through a 1 F capacitor and to GND through a 10-K resistor
(Figure 10-1). The oscillator and PLL are unaffected by the state of the RESET pin.
The CLK24 signal is active while RESET = HI. When RESET returns LO, the activity on
the CLK24 pin depends on whether or not the EZ-USB chip is in suspend state. If in sus-
pend, CLK24 stops. Resumption of USB bus activity or asserting the WAKEUP# pin LO
re-starts the CLK24 signal.
Power-on default values for all EZ-USB register bits are shown in Chapter 12, "EZ-USB
Registers." Table 10-1 summarizes reset states that affect USB device operation. Note
that the term “Power-On Reset” refers to a reset initiated by application of power, or by
assertion of the RESET pin.
* When the 8051 is released from reset, the EZ-USB automatically arms the Bulk OUT
Page 10-2
endpoints by setting their CS registers to 000000010b.
Item
10
12
13
14
15
16
17
18
19
20
21
11
1
2
3
4
5
6
7
8
9
Endpoint Data
Byte Counts
CPUCS
PORT Configs
PORT Registers
PORT OEs
Interrupt Enables
Interrupt Reqs
Bulk IN C/S
Bulk OUT C/S*
Toggle Bits
USBCS
FNADDR
IN07VAL
OUT07VAL
INISOVAL
OUTISOVAL
USBPAIR
USBBAV
Configuration
Alternate Setting
Table 10-1. EZ-USB States After Power-On Reset (POR)
Register
xxxxxxxx
xxxxxxxx
00000000
xxxxxxxx
00000000
00000000
00000000
00000000
00000000
0x000000
00000000
0
0
rrrr0011
00000000
00000100
00000000
01010111
01010101
00000111
00000111
Default Value
Chapter 10. EZ-USB Resets
rrrr=rev number, b1 =CLK24OE, b0=8051RES
IO, not alternate functions
Inputs
Disabled
Cleared
Bulk IN endpoints not busy (unarmed)
Bulk OUT endpoints not busy (unarmed)
Data toggles = 0
RENUM=0, DISCOE=1 (Discon pin drives)
USB Function Address
EP0,1,2,4,6 IN valid
EP0,2,4,6 OUT valid
EP8,9,10 IN valid
EP8,910OUT valid
ISOsend0 (b7) = 0, no pairing
Break condition cleared, no Autovector
Internal EZ-USB core value
Internal EZ-USB core value
Comment
EZ-USB TRM v1.9
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