saa7893hl-02 NXP Semiconductors, saa7893hl-02 Datasheet - Page 33

• Manufacturer Part Number: saa7893hl-02
• Description: Saa7893hl Super Audio Media Player
• Manufacturer: NXP Semiconductors

Philips Semiconductors
9397 750 10925
Product data
Fig 29. Host interface connection.
8.5.3 Host interface connection
8.6 SAD08 mode
Table 20:
Here the reading and writing is always done on 8-bit. From pin mapping it can be
seen that the byte indication is done via bit A(0) which is mapped on H_DQ(15) of the
SAA7893HL. The internal SAA7893HL communication stays on 16-bit. Therefore, the
host interface block ‘translates’ the 8 bits external communication to the 16 bits
internal. To save physical pins on the SAA7893HL device, the data bus and 4 address
bits are used to write the 12 MSB address bits, hereafter called ‘the base address’,
into the SAA7893HL device. Therefore, to access an address inside the SAA7893HL
first this 12 MSB bits of the address must be written as a base address for the
SAA7893HL indicated by the H_A_sel line. Pin H_A_sel can be mapped to a physical
address pin of the host.
Symbol
t
t
t
tri
set(D)
wt
MAD16_02
video clock
sys_clk or
mode
Timing numbers of MAD16_02 read
Parameter
time data bus becomes active after
H_CSn
time data available with respect to
H_WAIT signal
time H_WAIT can be active
DATA(15:0)
ADDR(3:1)
HDTACKn
IRQ_x
RD_
CSn
ALE
Rev. 02 — 26 February 2003
n.c.
15, 16, 22, 23, 25
VCC_IO
VCC_IO
VCC_IO
2, 3, 5, 6, 7, 8, 9,
11, 12, 13, 14,
124, 125, 126
127, 128, 1
123
26
24
27
28
18
21
62
63
H_RWn
H_CSn
H_WAIT
H_A_sel
H_A[6:4]
H_A[3:1]
H_DQ[15:0]
H_IRQn
H_procclk
sys_clk
H_sel[0]
H_sel[1]
SAA7893HL
…continued
Min
-
15
2
MCE050
© Koninklijke Philips Electronics N.V. 2003. All rights reserved.
Super audio media player
Typ
2
-
-
SAA7893HL
Max
-
-
24
Unit
sys_clk
ns
sys_clk
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