Rainbow-electronics W90P710CDG Manual do Utilizador descarregar pdf (Página 334)

100

101

W90P710CD/W90P710CDG

- 334 -

BITS DESCRIPTIONS

[31:3]

Reserved

[2:0]

UBCR

UBCR is a 3 bits register which is used to select clock source to

generate suitable baud rate:

000: 15Mhz from external crystal

100: 30Mhz divided from PLL 480Mhz

101: 43.6Mhz divided from PLL 480Mhz

110: 48Mhz divided from PLL 480Mhz

111: 60Mhz divided from PLL 480Mhz

6.12.3 UART2

UART2 contains 2 features: general UART and IrDA SIR decoder/encoder. UART has not modem

function. Please read the spec of section 7.12.5 General UART controller function description. The

IrDA SIR is described as follow:

Table 6.12.3.1 UART2 Register Map

UART2_RBR 0xFFF8_0200 R DLAB=0 Undefined

UART2_THR 0xFFF8_0200 W DLAB=0 Undefined

UART2_IER 0xFFF8_0204 R/W DLAB=0 0x0000_0000

UART2_DLL 0xFFF8_0200 R/W DLAB=1 0x0000_0000

UART2_DLM 0xFFF8_0204 R/W DLAB=1 0x0000_0000

UART2_IIR 0xFFF8_0208 R 0x8181_8181

UART2_FCR 0xFFF8_0208 W Undefined

UART2_LCR 0xFFF8_020c R/W 0x0000_0000

Reserved 0xFFF8_0210 Undefined

UART2_LSR 0xFFF8_0214 R 0x6060_6060

Reserved 0xFFF8_0218 Undefined

UART2_TOR 0xFFF8_021c R/W 0x0000_0000

UART2_IRCR 0xFFF8_0220 R/W 0x0000_0040

UART2 IrDA Control Register (UART2_IRCR)

UART2_IRCR

0xFFF8_0220 R/W UART 2 IrDA Control Register 0x0000_0040

1 2 ... 329 330 331 332 333 334 335 336 337 338 339 ... 551 552

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