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Cypress CY7C67200 manual UART Data Register 0xC0E4 R/W

Models: CY7C67200

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UART Data Register [0xC0E4] [R/W]

CY7C67200

Receive Full (Bit 1)

The Receive Full bit indicates whether the receive buffer is full. It can be programmed to interrupt the CPU as interrupt #5 when the buffer is full. This can be done though the UART bit of the Interrupt Enable register (0xC00E). This bit will automat- ically be cleared when data is read from the UART Data register.

1:Receive buffer full

0:Receive buffer empty

Transmit Full (Bit 0)

The Transmit Full bit indicates whether the transmit buffer is full. It can be programmed to interrupt the CPU as interrupt #4 when the buffer is empty. This can be done though the UART bit of the Interrupt Enable register (0xC00E). This bit will automatically be set to ‘1’ after data is written by EZ-Host to the UART Data register (to be transmitted). This bit will automatically be cleared to ‘0’ after the data is transmitted.

1:Transmit buffer full (transmit busy)

0:Transmit buffer is empty and ready for a new byte of data

UART Data Register [0xC0E4] [R/W]

Figure 75. UART Data Register

Bit #	15	14	13	12		11	10	9	8
Field					Reserved
Read/Write	-	-	-	-		-	-	-	-
Default	0	0	0	0		0	0	0	0

Bit #	7	6	5	4		3	2	1	0
Field					Data
Read/Write	R/W	R/W	R/W	R/W		R/W	R/W	R/W	R/W
Default	0	0	0	0		0	0	0	0

Register Description

The UART Data register contains data to be transmitted or received from the UART port. Data written to this register will start a data transmission and also causes the UART Transmit Empty Flag of the UART Status register to set. When data received on the UART port is read from this register, the UART Receive Full Flag of the UART Status register will be cleared.

Data (Bits [7:0])

The Data field is where the UART data to be transmitted or received is located

Reserved

All reserved bits must be written as ‘0’.

Document #: 38-08014 Rev. *G

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Cypress CY7C67200 manual UART Data Register 0xC0E4 R/W

Contents

Typical Applications EZ-OTG FeaturesCY7C67200 CY7C67200Interface Descriptions IntroductionProcessor Core Functional Overview CY7C67200OTG Features USB FeaturesUSB Pins OTG PinsI2C EEPROM Features UART FeaturesUART Pins I2C EEPROM PinsCY7C67200 HPI FeaturesHPI Pins CY7C67200Booster Pins Charge Pump FeaturesCharge Pump Pins CY7C67200Standalone Mode Crystal PinsCoprocessor Mode CY7C67200Figure 5. Minimum Standalone Hardware Configuration - Peripheral Only Power Savings and Reset DescriptionMinimum Hardware Requirements for Standalone Mode - Peripheral Only Power Savings Mode DescriptionInternal Memory LCP Variables USB Registers Slave Setup Packet BIOS StackMemory Map 0x0000 - 0x00FF 0x0100 - 0x011F 0x0120 - 0x013FCY7C67200 RegistersCPU Flags Register 0xC000 R CY7C67200 Bank Register 0xC002 R/WHardware Revision Register 0xC004 R CPU Speed Register 0xC008 R/W CY7C67200Power Control Register 0xC00A R/W CY7C67200Interrupt Enable Register 0xC00E R/W CY7C67200Breakpoint Register 0xC014 R/W CY7C67200Pull-down USB Diagnostic Register 0xC03C R/WCY7C67200 Force SelectLock Watchdog Timer Register 0xC00C R/WCY7C67200 StrobeResistors Enable Timer n Register R/WUSB n Control Register R/W CY7C672000xC090/0xC0B0 CY7C67200Pull up/Pull down on D+ and 0xC094/0xC0B4Sequence Host n Control Register R/WCY7C67200 SyncCY7C67200 Host n Address Register R/WHost n Count Register R/W Length Host n Endpoint Status Register RCY7C67200 Host n PID Register W CY7C67200CY7C67200 Host n Count Result Register RHost n Device Address Register W Port A Connect Host n Interrupt Enable Register R/WCY7C67200 Port A Connect Host n Status Register R/WCY7C67200 CY7C67200 Host n SOF/EOP Count Register R/WHost n SOF/EOP Counter Register R CY7C67200 Host n Frame Register RDevice n Endpoint n Control Register R/W CY7C67200 CY7C67200 Device n Endpoint n Address Register R/WDevice n Endpoint n Count Register R/W CY7C67200 Device n Endpoint n Status Register R/WSetup CY7C67200 Page 32 ofDevice n Endpoint n Count Result Register R/W CY7C67200CY7C67200 Device n Interrupt Enable Register R/WInterrupt Enable CY7C67200 Page 35 ofCY7C67200 Device n Address Register WDevice n Status Register R/W CY7C67200 Page 37 ofCY7C67200 Device n Frame Number Register RDevice n SOF/EOP Count Register W C098H OTG Control Register 0xC098 R/WCY7C67200 GPIO Control Register 0xC006 R/W CY7C67200CY7C67200 GPIO 0 Output Data Register 0xC01E R/WGPIO 1 Output Data Register 0xC024 R/W GPIO 0 Direction Register 0xC022 R/W GPIO 0 Input Data Register 0xC020 RGPIO 1 Input Data Register 0xC026 R CY7C67200GPIO 1 Direction Register 0xC028 R/W CY7C67200HSS Control Register 0xC070 R/W CY7C67200HSS Baud Rate Register 0xC072 R/W CY7C67200CY7C67200 HSS Transmit Gap Register 0xC074 R/WHSS Data Register 0xC076 R/W CY7C67200 HSS Receive Address Register 0xC078 R/WHSS Receive Counter Register 0xC07A R/W CY7C67200 HSS Transmit Address Register 0xC07C R/WHSS Transmit Counter Register 0xC07E R/W CY7C67200 HPI Breakpoint Register 0x0140 RInterrupt Routing Register 0x0142 R SOF/EOP2 to CPU Enable Bit CY7C67200CY7C67200 SIEXmsg Register WHPI Mailbox Register 0xC0C6 R/W HPI Status Port HPI R CY7C67200SPI Configuration Register 0xC0C8 R/W CY7C672003Wire Enable Bit CY7C67200Strobe SPI Control Register 0xC0CA R/WCY7C67200 Receive Bit LengthCY7C67200 SPI Interrupt Enable Register 0xC0CC R/WSPI Status Register 0xC0CE R CY7C67200 SPI Interrupt Clear Register 0xC0D0 WSPI CRC Control Register 0xC0D2 R/W CY7C67200 SPI CRC Value Register 0xC0D4 R/WSPI Data Register 0xC0D6 R/W CY7C67200 SPI Transmit Address Register 0xC0D8 R/WSPI Transmit Count Register 0xC0DA R/W CY7C67200 SPI Receive Address Register 0xC0DC R/WSPI Receive Count Register 0xC0DE R/W CY7C67200 UART Control Register 0xC0E0 R/WUART Status Register 0xC0E2 R UART Data Register 0xC0E4 R/W CY7C67200CY7C67200 Pin DiagramPin Descriptions Name CY7C67200Table 38.Pin Descriptions continued TypeCrystal Requirements XTALIN, XTALOUT Absolute Maximum RatingsOperating Conditions CY7C67200DC Characteristics CY7C67200nRESET nRD or nWRL or nWRH AC Timing CharacteristicsReset Timing CY7C67200XTALIN Clock Timing1. I2C EEPROM Bus Timing - Serial I/O CY7C67200tASU tCSSU ADDR nCS nWR nRD DoutCY7C67200 tCYCADDR CY7C67200HSS Block Mode Transmit CY7C67200HSS BYTE Mode Transmit HSS BYTE and BLOCK Mode ReceivePage 72 of CY7C67200Hardware CTS/RTS Handshake Default Low Register SummaryDefault High CY7C67200CY7C67200 Default HighDefault Low + FeedbackCY7C67200 Default HighDefault Low + FeedbackCY7C67200 Default HighDefault Low + FeedbackCY7C67200 Package DiagramOrdering Information Table 43.Ordering InformationCY7C67200 Document History Page“Interrupt Enable Register 0xC00E R/W” Mode”