HBD-E280/T28
71
Pin No. Pin Name I/O Description
Y4 SREXT - External reference resistor connection terminal Not used
Y5 AVDD33_SATA - Power supply terminal (+3.3V)
Y8 DVCC33_IO_2 - Power supply terminal (+3.3V)
Y20 DVCC15_IO_1 - Power supply terminal (+1.5V)
Y24, Y25 RA8_B, RA13_B O Address signal output to the SD-RAM
Y26 RRESET_B O Reset signal output to the SD-RAM “L”: reset
AA3,
AA4
AVDD33_USB_1P_1,
AVDD33_USB_2P_2
- Power supply terminal (+3.3V)
AA5,
AA6
AVSS33_USB_2P_2,
AVSS33_USB_1P_1
- Ground terminal
AA8 DVCC33_IO_2 - Power supply terminal (+3.3V)
AA11 DVCC15_IO_1 - Power supply terminal (+1.5V)
AA12 DGND - Ground terminal
AA13 DVCC15_IO_1 - Power supply terminal (+1.5V)
AA14 DGND - Ground terminal
AA15 DVCC15_IO_1 - Power supply terminal (+1.5V)
AA16 DGND - Ground terminal
AA17 DVCC15_IO_1 - Power supply terminal (+1.5V)
AA18 DGND - Ground terminal
AA19 DVCC15_IO_1 - Power supply terminal (+1.5V)
AA20,
AA21
RVREF_2, RVREF_3 I Reference voltage (+0.75V) input terminal for SD-RAM
AA23,
AA24
RDQ22_B, RDQ20_B I/O Two-way data bus with the SD-RAM
AA25 DVCC15_IO_1 - Power supply terminal (+1.5V)
AA26 DGND - Ground terminal
AA27,
AA28
RA3_B, RA5_B O Address signal output to the SD-RAM
AB1 USB_1P_DM I/O Two-way USB serial data (–) bus with the USB connector (rear side)
AB2 USB_1P_DP I/O Two-way USB serial data (+) bus with the USB connector (rear side)
AB3 AVDD12_USB_1P_1 - Power supply terminal (+1.2V)
AB5 AVSS12_USB_2P_1A - Ground terminal
AB6 AVSS12_USB_1P_1 - Ground terminal
AB11 DGND - Ground terminal
AB12 RVREF_1 I Reference voltage (+0.75V) input terminal for SD-RAM
AB23,
AB24
RDQ23_B, RDQ21_B I/O Two-way data bus with the SD-RAM
AB25 RCS_B O Chip select signal output to the SD-RAM
AB26 RBA0_B O Bank address signal output to the SD-RAM
AB27 RCLK1_B O Clock signal (positive) output to the SD-RAM
AB28 RCLK1_B_ O Clock signal (negative) output to the SD-RAM
AC1 USB_2P_DM1 I/O
Two-way USB serial data (–) bus with the USB connector (front side)
(E280: AEP, Italian, UK, Australian, Mexican/T28: Mexican models only)
AC2 USB_2P_DP1 I/O
Two-way USB serial data (+) bus with the USB connector (front side)
(E280: AEP, Italian, UK, Australian, Mexican/T28: Mexican models only)
AC3 USB_1P_VRT - External reference resistor connection terminal
AC4 AVDD12_USB_2P_1A - Power supply terminal (+1.2V)
AC7 GPIO7 O USB VBUS on/off control signal output terminal for USB connector “H”: VBUS on
AC9 EFPWRQ - Power supply terminal (+2.5V) Not used
AC12 RDQ12 I/O Two-way data bus with the SD-RAM
AC13 RRAS_ O Row address strobe signal output to the SD-RAM
AC14 RODT O On die termination enable signal output to the SD-RAM
AC15 RBA2 O Bank address signal output to the SD-RAM
AC16 RRESET O Reset signal output to the SD-RAM “L”: reset
AC17,
AC18
RA6, RA12 O Address signal output to the SD-RAM
AC20 RDQ10 I/O Two-way data bus with the SD-RAM
AC22 RDQ4 I/O Two-way data bus with the SD-RAM
AC23 to
AC25
RDQ31_B, RDQ30_B,
RDQ28_B
I/O Two-way data bus with the SD-RAM
AC26 RCAS_B O Column address signal output to the SD-RAM
Ver. 1.1
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