SH7708 Datasheet, PDF (247/625 Pages) Renesas Technology Corp – SuperH™ RISC engine

Area 5: Area 5 physical address bits A28–A26 are 101. Address bits A31–A29 are ignored and
the address range is the 64 Mbytes at H'14000000 + H'20000000 × n – H'17FFFFFF +
H'20000000 × n (n = 0–6, n = 1–6 is the shadow space).
Normal memories like SRAM and ROM as well as burst ROM and PCMCIA interfaces can be
connected to this space. PCMCIA interfaces only use their IC memory card interface, so the
address range becomes the 32 Mbytes at H'14000000 + H'20000000 × n – H'15FFFFFF +
H'20000000 × n (n = 0–6, n = 1–6 is the shadow space).
For normal memory and burst ROM, byte, word, or longword can be selected as the bus width
using the A5SZ1–A5SZ0 bits in BCR2. For the PCMCIA interface, byte, and word can be
selected as the bus width using the A5SZ1–A5SZ0 bits in BCR2.
When the area 5 space is accessed and normal memory is connected, the CS5 signal is asserted.
The RD signal that can be used as OE and the WE0–WE3 signals for write control are also
asserted. When the PCMCIA interface is used, the CE1 signal, CE2 signal, OE signal, and WE
signal are asserted.
The number of bus cycles is selected between 0 and 10 wait cycles using the A5W2–A5W0 bits in
WCR2. Also, any number of waits can be inserted in each bus cycle by means of the external wait
pin (WAIT). When a burst function is used, the bus cycle pitch of the burst cycle is determined
within a range of 2–10 according to the number of waits. The setup and hold times of
address/CE1A/CE2A for the read/write strobe signals can be set within a range of 0.5–3.5 cycles
using the A5TED1–A5TED0 and A5TEH1–A5TEH0 bits in the PCR register.
Area 6: Area 6 physical address bits A28–A26 are 110. Address bits A31–A29 are ignored and the
address range is the 64 Mbytes at H'18000000 + H'20000000 × n – H'1BFFFFFF + H'20000000
× n (n = 0–6, n = 1–6 is the shadow space).
Normal memories like SRAM and ROM as well as burst ROM and PCMCIA interfaces can be
connected to this space. When the PCMCIA interface is used, the IC memory card interface address
range is the 32 Mbytes at H'18000000 + H'20000000 × n – H'19FFFFFF + H'20000000 × n and
the I/O card interface address range is the 32 Mbytes at H'1A000000 + H'20000000 × n –
H'1BFFFFFF + H'20000000 × n (n = 0–6, n = 1–6 is the shadow space).
For normal memory and burst ROM, byte, word, or longword can be selected as the bus width
using the A6SZ1–A6SZ0 bits in BCR2. For the PCMCIA interface, byte, and word can be
selected as the bus width using the A6SZ1–A6SZ0 bits in BCR2.
When the area 6 space is accessed and normal memory is connected, the CS6 signal is asserted.
The RD signal that can be used as OE and the WE0–WE3 signals for write control are also
asserted. When the PCMCIA interface is used, the CE1B signal, CE2B signal, OE signal, and
WE1 , ICORD, and ICOWR signals are asserted.
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