5.1.2 A_WEN and B_WEN

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Two-port mode is in effect when the width of at least one port is greater than 20 bits, and read operation is always enabled. The following table lists the write/read control signals for each port.

Table 5-3. Write/Read Operation Select
Depth x Width	A_WEN/B_WEN	Result
16K x 1, 8K x 2, 4K x 5, 2K x 10	x0	Perform a read operation
16K x 1, 8K x 2, 4K x 5, 2K x 10	x1	Perform a write operation
1K x 16	00	Perform a read operation
	01	Write [8:5], [3:0]
	10	Write [18:15], [13:10]
	11	Write [18:15], [13:10], [8:5], [3:0]
1K x 20	00	Perform a read operation
	01	Write [9:0]
	10	Write [19:10]
	11	Write [19:0]
512 x 32 (two-port write)	B_WEN[0] = 1	Write B_DIN[8:5], B_DIN[3:0]
	B_WEN[1] = 1	Write B_DIN[18:15], B_DIN[13:10]
	A_WEN[0] = 1	Write A_DIN[8:5], A_DIN[3:0]
	A_WEN[1] = 1	Write A_DIN[18:15], A_DIN[13:10]
512 x 40 (two-port write)	B_WEN[0] = 1	Write B_DIN[9:0]
	B_WEN[1] = 1	Write B_DIN[19:10]
	A_WEN[0] = 1	Write A_DIN[9:0]
	A_WEN[1] = 1	Write A_DIN[19:10]
512 x 33 (two-port ECC)	B_WEN[1:0] = 11 A_WEN[1:0] = 11	Write B_DIN[16:0] Write A_DIN[15:0]