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Ultra Fast USB 2.0 SD/MMC Flash Media Controller
Datasheet
Revision 1.0 (05-27-08) 14 SMSC USB2244/USB2244i
DATASHEET
6.1 36-Pin Reset States
Table 6.1 USB2244/USB2244i Pin Reset States
RESET STATE
Post-Reset State
SD Mode
PIN PIN NAME FUNCTION
OUT-
PUT
PU/
PD
IN-
PUT
FUNCTION
OUT-
PUT
PU/
PD
IN-
PUT
8 SD_D6 none z -- -- SD_D6 hw pu yes
7 SD_D7 none z -- -- SD_D7 hw pu yes
5 SD_D0 none z -- -- SD_D0 hw pu yes
4 SD_D1 none z -- -- SD_D1 hw pu yes
30 SD_WP SD_WP 0 -- -- SD_WP (fw) (fw) (fw)
25 SD_D2 none z -- -- SD_D2 hw pu yes
23 SD_D3 none z -- -- SD_D3 hw pu yes
20 SD_D4 none z -- -- SD_D4 hw pu yes
9 SD_CLK none z -- -- SD_CLK hw -- yes
10 SD_D5 none z -- -- SD_D5 hw pu yes
11 SD_CMD none z -- -- SD_CMD hw pu yes
19 GPIO14 GPIO
zpuyes
26 GPIO15 (SD_nCD) GPIO
zpuyes
24 GPIO12 GPIO
zpuyes
27 GPIO2 / RXD / SDA GPIO
0----
RXD z pu yes
29 GPIO4 GPIO
0----
31
GPIO7 / TXD / SCK
GPIO
0----
TXD hw -- --
21 GPIO10(CARD_PWR) GPIO
z----
PWR VDD -- --
28 TEST TEST
z--yes
18 nRESET nRESET
z--yes
1 GPIO1 (LED1) GPIO1
0----
17:15 NC none z -- -- none z -- --
12 NC none z -- -- none z -- --
2 USB+ USB+ z -- --
3 USB- USB- z -- --
35 RBIAS
33 XTAL1 (CLKIN)
32 XTAL2