Ultra Fast USB 2.0 Memory Stick Flash Media Controller
Datasheet
Table 5.2 USB2242/2242i
|
|
| BUFFER |
|
NAME | SYMBOL | TYPE | DESCRIPTION | |
|
|
|
|
|
General Purpose | GPIO7 / | 31 | I/O12 | GPIO: This pin may be used either as |
I/O | TXD / |
|
| input, edge sensitive interrupt input, or |
| SCK / |
|
| output. |
| MS_SKT_SEL |
|
|
|
|
| O12 | TXD: In addition, as an output, the GPIO7 | |
|
|
| ||
|
|
|
| can be used as an output TXD of UART in |
|
|
|
| the device, when the GPIO2/TXD bit in |
|
|
|
| UTL_CONFIG register is set to "1" |
|
|
|
|
|
|
|
| O12 | SCK: This is the clock output when used |
|
|
|
| with an external EEPROM. |
|
|
|
|
|
|
|
| I | MS_SKT_SEL: On the positive edge of |
|
|
|
| nRESET, this pin is sampled to determine |
|
|
|
| the Memory Stick socket size. |
|
|
|
| 1 = 8 bit |
|
|
|
| 0 = 4 bit |
|
|
|
|
|
General Purpose | GPIO10 | 21 | I/O200 | GPIO: This pin may be used either as |
I/O | (CRD_PWR) |
|
| input, edge sensitive interrupt input, or |
|
|
|
| output. |
|
|
|
|
|
|
|
|
| CRD_PWR: Card Power drive of 3.3V @ |
|
|
|
| either 100mA or 200mA. |
|
|
|
|
|
General Purpose | GPIO14 | 19 | I/O12 | This pin may be used either as input, edge |
I/O |
|
|
| sensitive interrupt input, or output. |
|
|
|
|
|
General Purpose | GPIO15 | 26 | I/O12 | This pin may be used either as input, edge |
I/O |
|
|
| sensitive interrupt input, or output. |
|
|
|
|
|
RESET Input | nRESET | 18 | IS | This active low signal is used by the |
|
|
|
| system to reset the chip. The active low |
|
|
|
| pulse should be at least 1μs wide. |
|
|
|
|
|
TEST Input | TEST | 28 | I | This signal is used for testing the chip. |
|
|
|
| User should normally tie this pin low |
|
|
|
| externally if the test function is not used. |
|
|
|
|
|
No Connects | NC | 12 |
| No Connect. No trace or signal should be |
|
| 15 |
| routed/attached to these pins. |
|
| 16 |
|
|
|
| 17 |
|
|
|
| 25 |
|
|
|
|
|
|
|
|
| DIGITAL / POWER |
| |
|
|
|
|
|
+1.8V Core power | VDD18 | 13 |
| +1.8V core power. This pin must have a |
|
|
|
| 1.0μF (or greater) ±20% (ESR <0.1Ω) |
|
|
|
| capacitor to VSS. |
|
|
|
|
|
3.3V Power & | VDD33 | 6 |
| 3.3V Power & Regulator Input. |
Regulator Input. |
| 14 |
|
|
|
| 22 |
|
|
|
|
|
|
|
Ground | VSS | SLUG |
| Ground Reference |
|
|
|
|
|
Revision 1.0 | 12 | SMSC USB2242/USB2242i |
DATASHEET