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EVB-USB2250

P1-P3P4-P6P7-P9P10-P12P13-P15P16-P18P19-P21P22-P24P25-P27P28-P30P31-P33P34-P36P37-P39P40-P42P43-P43
2009 - 2015 Microchip Technology Inc. DS00002005A-page 16
USB2250/50i/51/51i
Note 5-1 Hot-insertion capable card connectors are required for all flash media. It is required for the SD
connector to have a Write Protect switch. This allows the chip to detect the MMC card.
Note 5-2 nMCE is normally asserted except when the 8051 is in standby mode.
5.2 Buffer Type Descriptions
Ground VSS 9
17
51
75
81
102
122
126
Ground Reference
TABLE 5-2: BUFFER TYPE DESCRIPTIONS
BUFFER DESCRIPTION
I Input.
IPU Input with internal weak pull-up resistor.
IPD Input with internal weak pull-down resistor.
IS Input with Schmitt trigger.
I/O12 Input/Output buffer with 12 mA sink and 12 mA source.
I/O200 Input/Output buffer 12 mA with FET disabled, 100/200 mA source only when the FET
is enabled.
I/O12PD Input/Output buffer with 12 mA sink and 12 mA source with an internal weak pull-down
resistor.
I/O12PU Input/Output buffer with 12 mA sink and 12 mA source with a pull-up resistor.
O12 Output buffer with 12 mA source.
O12PU Output buffer with 12 mA sink and 12 mA source, with a pull-up resistor.
O12PD Output buffer with 12 mA sink and 12 mA source, with a pull-down resistor.
ICLKx XTAL clock input.
OCLKx XTAL clock output.
I/O-U Analog Input/Output as defined in the USB 2.0 Specification.
I-R RBIAS.
TABLE 5-1: USB2250/50I/51/51I 128-PIN VTQFP PIN DESCRIPTIONS (CONTINUED)
Name Symbol
128-Pin
VTQFP
Buffer
Type
Description
2009 - 2015 Microchip Technology Inc. DS00002005A-page 17
USB2250/50i/51/51i
6.0 PIN RESET STATE TABLE
FIGURE 6-1: PIN RESET STATES
TABLE 6-1: LEGEND FOR PIN RESET STATES TABLE
Symbol Description
0 Output driven low
1 Output driven high
IP Input enabled
PU Hardware enables pull-up
PD Hardware enables pull-down
-- Hardware disables function
Z Hardware disables pad. Both output driver and
input buffers are disabled.
Voltage
Signal
(v)
Time
(t)
RESET
RESET
Hardware
Initialization
Firmware
Operational
V
DD33
V
SS
USB2250/50i/51/51i
DS00002005A-page 18 2009 - 2015 Microchip Technology Inc.
6.1 128-Pin Reset States
6.2
128-Pin Reset States
TABLE 6-2: USB2250/50I/51/51I 128-PIN RESET STATES
Reset State Reset State
Pin Pin Name Function
Input/
Out-
put
PU/
PD
Pin Pin Name Function
Input/
Out-
put
PU/
PD
85 CF_D0 None z -- 58 CF_nCD None
IP pu
86 CF_D1 None z -- 46 SM_D0 SM
zpd
88 CF_D2 None z -- 45 SM_D1 SM
zpd
59 CF_D3 None z -- 44 SM_D2 SM
zpd
61 CF_D4 None z -- 43 SM_D3 SM
zpd
63 CF_D5 None z -- 42 SM_D4 SM
zpd
67 CF_D6 None z -- 41 SM_D5 SM
zpd
69 CF_D7 None z -- 40 SM_D6 SM
zpd
87 CF_D8 None z -- 39 SM_D7 SM
zpd
89 CF_D9 None z -- 52 SM_ALE SM
zpd
90 CF_D10 None z -- 53 SM_CLE SM
zpd
60 CF_D11 None z -- 47 SM_nWP SM
zpd
62 CF_D12 None z -- 38 SM_nWPS SM
z--
66 CF_D13 None z -- 57 SM_nCD None
IP pu
68 CF_D14 None z -- 91 MS_BS MS
zpd
70 CF_D15 None
z--
101 MS_SCLK MS
zpd
72 CF_nIOR CF z -- 94 MS_D0 / MS_SDIO MS
zpd
73 CF_nIOW CF z -- 92 MS_D1 MS
zpd
74 CF_nIRQ CF z -- 96 MS_D2 MS
zpd
79 CF_nRESET CF z -- 99 MS_D3 MS
zpd
80 CF_IORDY CF z -- 95 MS_D4 MS
zpd
71 CF_nCS0 CF z -- 93 MS_D5 MS
zpd
84 CF_SA0 CF z -- 97 MS_D6 MS
zpd
83 CF_SA1 CF z -- 100 MS_D7 MS
zpd
82 CF_SA2 CF
z--
98 MS_INS None
IP pu
P1-P3P4-P6P7-P9P10-P12P13-P15P16-P18P19-P21P22-P24P25-P27P28-P30P31-P33P34-P36P37-P39P40-P42P43-P43

EVB-USB2250

Mfr. #:
Buy EVB-USB2250
Manufacturer:
Microchip Technology
Description:
Interface Development Tools USB2250 UltFastHiSpd Customer Eval Brd
Lifecycle:
New from this manufacturer.
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