W83L517D_05 Datasheet, PDF (120/133 Pages) Winbond – LPC I/O for Notebook

W83L517D/W83L517D-F
CRF0 (Default 0x3F)
Bit 7: Reserved.
Bit 6 - 3: ECP FIFO Threshold.
Bit 2 - 0: Parallel Port Mode (CR28 PRTMODS2 = 0)
= 100 Printer Mode (Default)
= 000 Standard and Bi-direction (SPP) mode
= 001 EPP - 1.9 and SPP mode
= 101 EPP - 1.7 and SPP mode
= 010 ECP mode
= 011 ECP and EPP - 1.9 mode
= 111 ECP and EPP - 1.7 mode.
12.7 Logical Device 2 (UART A)
CR30 (Default 0x01 if PNPCSV = 0 during POR, default 0x00 otherwise)
Bit 7 - 1: Reserved.
Bit 0: = 1 Activates the logical device.
= 0 Logical device is inactive.
CR60, CR 61 (Default 0x03, 0xF8 if PNPCSV = 0 during POR, default 0x00, 0x00 otherwise)
These two registers select Serial Port 1 I/O base address [0x100:0xFF8] on 8 byte boundary.
CR70 (Default 0x04 if PNPCSV = 0 during POR, default 0x00 otherwise)
Bit 7 - 4: Reserved.
Bit 3 - 0: These bits select IRQ resource for Serial Port 1.
CRF0 (Default 0x00)
Bit 7 - 2: Reserved.
Bit 1 - 0: SUACLKB1, SUACLKB0
= 00 UART A clock source is 1.8462 Mhz (24MHz/13)
= 01 UART A clock source is 2 Mhz (24MHz/12)
= 10 UART A clock source is 24 Mhz (24MHz/1)
= 11 UART A clock source is 14.769 Mhz (24mhz/1.625)
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