Reference Manual

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SD host interface The S3C2443 Secure Digital Interface (SDI) can interface for SD memory card, SDIO
device and Multi-Media Card (MMC).
Features:
 SD Memory Card Spec. (ver. 1.0) / MMC Spec. (2.11) compatible
 SDIO Card Spec (ver. 1.0) compatible
 16 words (64 bytes) FIFO (depth 16) for data Tx/Rx
 40-bit Command Register
 136-bit Response Register
 8-bit Prescaler logic (Freq. = System Clock / (P + 1))
 Normal, and DMA Data Transfer Mode (byte, halfword, word transfer)
 1bit / 4bit (wide bus) Mode & Block / Stream Mode Switch support
 DMA burst4 access support (only word transfer)
The following shows the SD host block diagram:
PWM timer The S3C2443 has five 16-bit timers. Timer 0, 1, 2, and 3 have Pulse Width Modulation
(PWM) function. Timer 4 has an internal timer only with no output pins. The timer 0
has a dead-zone generator, which is used with a large current device. The timer 0 and
1 share an 8-bit prescaler, while the timer 2, 3 and 4 share other 8-bit prescaler. Each
timer has a clock divider, which generates 5 different divided signals (1/2, 1/4, 1/8,
1/16, and TCLK). Each timer block receives its own clock signals from the clock
divider, which receives the clock from the corresponding 8-bit prescaler. The 8-bit
prescaler is programmable and divides the PCLK according to the loading value,
which is stored in TCFG0 and TCFG1 registers.
The timer count buffer register (TCNTBn) has an initial value which is loaded into the
down-counter when the timer is enabled. The timer compare buffer register