OXU121HP datasheet(11/22 Pages) OXFORD

Part #	OXU121HP

Description	USB On-The-Go Full-Speed Host and High-Speed Peripheral Controller

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Manufacturer	OXFORD [Oxford Semiconductor]

Direct Link	http://www.oxsemi.com

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DS-0040 Aug 06

External--Free Release

11

Oxford Semiconductor, Inc.

OXU121HP Data Sheet

Table 13 lists the LQFP pin allocations.

Table 13 OXU121HP 100-Pin LQFP Pin Allocations (Sheet 1 of 3)

No.

Bits

Type(1)

Name

Description

Processor Interface (37 pins)

2, 3, 4, 5, 8, 9, 10,

11, 13, 14, 15, 16,

96, 97, 98, 99

16

MSBCT

D0 - D15

16-bit data bus. Pull-up/pull-down can be controlled

through register 0x034, bits 2:1. Default is none

22, 23, 24, 25, 28,

29, 30 32, 33, 34,

35, 36

12

MSID

A1 - A12

Address bus for direct address space of 8 Kbytes.

Pull-up can be enabled through register 0x034, bits

9:8. Default is pull-down

20

1

MSIU

/WR

Write strobe. Pull-up can be disabled through register

0x034, bit 13. Default is pull-up

21

1

MSIU

/RD

Read strobe. Pull-up can be disabled through register

0x034, bit 13. Default is pull-up

39

1

MSIU

/CS

Chip select. Pull-up can be disabled through register

0x034, bit 13. Default is pull-up

19

1

MOCT

/INT

Interrupt to the MCU.This pin can be software

configured as a driven output or open drain. Open

drain is the default

86

1

MSIU

/RESET

Hardware reset. Pull-up is always enabled

89, 92

2

MOCT

DRQ1, DRQ0

DMA request outputs to support two channels

90, 93

2

MSI

ACK1, ACK0

DMA acknowledge. Pull-up/pull-down can be

controlled through register 0x03A, bits 1:0. Default is

none

General Purpose I/O (1 pin)

88

1

BC

GPIO

General purpose I/O

Power & Ground (34 pins)

1, 12, 27, 41, 51,

65, 75, 83

8VSS

Digital/wide-range ground

42, 47, 69, 74, 82

5

VSSA

Analog ground

6, 18, 40, 53, 57,

66, 84, 100

8VDD1.8

1.8 V core power. VREGOUT may be used for the

supplies

43, 48, 70, 73, 81

5

VDD3.3A

Analog +3.3 V power

56, 78

2

VDD3.3

Digital +3.3 V power

7, 17, 26, 31, 85,

95

6VDDW

Wide-range I/O +1.8 V to +3.3 V. If using +1.8 V,

VREGOUT may be used for these supplies

USB Interface (13 pins)

76, 77

2

B

DP2, DM2

Data lines for host port 2, a dedicated USB host port.

If not used, these pins should be left floating

54, 55

2

B

DP1, DM1

Data lines for host port 1, which can serve as a USB

host or an OTG port in combination with the

peripheral port. If not used, these pins should be left

floating

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